Dr. UCHE JOSEPH
Publication Title Polychlorinated Biphenyls (PCBS) in Soil in Ondo State, Nigeria
Publication Type journal
Publisher International Journal of Applied Science and Engineering Review (IJASER)
Paper Link https://doi.org/10.52267/IJASER.2023.4404
Publication Authors Ediagbonya Thompson Faraday, Joseph Ifeanyi Uche and Aniekwe Chukwuma
Year Published 2023-07-07
Abstract Polychlorinated biphenyls (PCBs) adhere to soil particles and persist there for a considerable amount of time. Their near proximity might expose people by ingesting, inhalation, and skin contact, which could have neurotoxic, mutagenic, and cancerous health effects. In Okitipupa, Ondo State, Nigeria, this investigation measured the level of PCBs in soil at five different sites. A GC paired with an ECD detector was used to evaluate the sample. Concentrated H2SO4 was used to clean the extracts. According to the study's findings, the average concentration of PCB congeners at the different sites was 5.364 g/kg, with a range of 0.150 to 13.30 g/kg. Recovery rates for specific PCB congeners ranged from 87% to 100%. The number of polychlorinated biphenyls (PCBs) in the soil was higher than the 0.050 mg/kg WHO acceptable limit. TetraPCB and triPCBs have a strong positive connection. The correlation between the soil's pH and total PCBs was positive and strong (r = 3.95) while the correlation between the soil's EC and total PCBs was negative and strong (r = -0.411). The estimated daily intake (EDI) ranged from 3.0* 10-7 to 6.0* 10-7 incremental lifetime cancer risk (ICLR) ranged from 2.0* 10-6 to 4.0* 10-6. While the quotient hazard (QH) values varied from 9.0* 10-4 to 2.0* 10-3, The EDI, ICLR and QH were within USEPA tolerable risk limit
Publication Title DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBs) IN SURFACE WATER IN ONDO STATE NIGERIA
Publication Type journal
Publisher Olusegun Agagu University of Science & Technology
Publication Authors Ediagbonya T.F., Uche J.I., Esi, O.E and Afolabi, O. J
Year Published 2023-05-30
Abstract Polychlorinated biphenyl compounds (PCBs) were included to the Stockholm Convention's list of typical
persistent organic pollutants on May 22, 2001. (POPs). Humans have produced PCBs, which are
pervasive in the environment. They are a concern for people all around the world because of their toxic,
bioaccumulative, long-lasting, hydrophobic, and transboundary characteristics. The study's goals
included describing how PCBs are distributed in surface water and evaluating how certain
physiochemical factors affect PCB concentrations. Five separate Okitipupa locations—OAUSTECH,
Igodan, Okunmo, Idepe, and Lebi/Ofe River—had their water samples taken. The overall average
concentration of PCBs discovered in the samples taken from ?ve (5) distinct places was determined to be
as follows: OAUSTECH (5.720±13), Igodan (5.520±00), Okunmo (3.480±03), Idepe (21.830±02), and
Lebi/Ofe (0.160±00), with their combined probability being determined to be 0.001. Twenty-?ve (25) PCB
congeners were examined using a gas chromatography-electron capture detector (GC-ECD). The majority
of congeners were below the detection threshold at every site. Total PCB values varied from 0.16 g/L to
21.83 g/L. The correlation between the overall level of polychlorinated biphenyls and the total organic
carbon was positive (0.214), but it was weak (PCBs) and pH, positive (0.096) but poor correlation between
the electrical conductivity, and a positive (0.220). The levels found in this investigation, with the
exception of one area, were obviously lower than the 0.5?g/l level advised by the WHO. The water's
concentration of polychlorinated biphenyls (PCBs) is not signi?cantly impacted by the physicochemical
characteristics, and the water is safe to use for household purposes
Publication Title Monitoring Indoor Carbon-monoxide (CO) levels in Agbor, Delta-state Nigeria to Prevent High Mortality Rates from future Pandemics
Publication Type journal
Publisher Ethiopian Journal of Environmental Studies & Management 15(1): 22 – 31, 2022
Paper Link doi: https://ejesm.org/doi/v15i1.3
Publication Authors Uche, J. I. and Ehiwarior, B. C
Year Published 2022-02-03
Abstract Maintaining air quality is an important and effective approach to mitigating the virus
pandemic in that, the quality of air is important in creating, sustaining or inhibiting
conditions for virus viability. Polluted air is the most significant environmental risk factor
for all-cause mortality. Exposure to poor air-quality may exacerbate symptoms, trigger a
severe course of the virus and for the most vulnerable population, and eventually be fatal.
The morbidity posed by air pollution and its impact on our current situation must not be
overlooked in the midst of our unprecedented coronavirus pandemic. In-situ CO data from
ten (10) shops at different locations in Agbor, Delta state, Nigeria were monitored between
the hours 7.00am – 6.00pm thrice weekly for the period January to March, 2021 using BK
PRECISION 627 carbon-monoxide sensor. Statistical correlations between the indoor and
outdoor values were calculated. One of the main findings indicates high CO values in some
of the shops. The Centre of Research on Clean Air reported that greater levels of air pollution
interfere with the body’s normal defense against air borne viruses including SARS-CoV-2.
The findings suggest a potential for local traffic management strategies to reduce ambient
exposure, minimize exceedances of air quality standards for pollutants and, optimize
ventilation based on occupancy and activity.
Publication Title Adsorption of Cadmium and Nickel from Aqueous Solution Using Chitosan and Chemically Modified Chitosan
Publication Type journal
Publisher International Journal of Sciences: Basic and Applied Research (IJSBAR)
Publication Authors Joseph Ifeanyi Uchea *, Blessing Chika Ehiwariob
Year Published 2022-06-07
Abstract Chitosan was produced by complete deacetylation of chitin from crustacean shells (snail shell).
ForrierTransfomInfra-Red Spectroscopy(FTIR) analysis of the unmodified chitosan and Acetic anhydride
chitosan were carried out. The FTIR spectrum of unmodified chitosan has strong peaks observed at 3640.58cm-1
and the chemically modified acetic anhydride chitosan at 3278.44cm1. The two products: chitosan and Acetic
Anhydride chitosan were applied for the adsorption of cadmium and Nickel from aqueous solution using a UVvisible Spectrophotometer (model JENWAY 6320D) and their percentage sorption was compared. It was
observed that the modified chitosan with Acetic Anhydride, showed good ability for metal ion uptake.The
amount Cadmium and Nickel absorbed was found to increase with time.Results also indicate that the adsorption
capacity of metal ion increased with temperature. The high percentage adsorptions of the materials are due to
the additional functional groups present in the samples. It took about 120 minutes for acetic anhydride modified
chitosan to reach equilibrium at which a higher percentage sorption (86.50%) was obtained, while unmodified
chitosan gave (82.50%).
Publication Title Zea Mays Plant as a Suitable Phytoremediator for Soil Matrix Contaminated with Cadmium
Publication Type journal
Publisher Nigerian Journal of Basic and Applied Science
Publication Authors *A. N. Amitaye and J. I. Uche
Year Published 2017-06-10
Abstract As a green technique for environmental protection and sustainability, Zea mays capacity to bioaccumulate
cadmium was studied. The impacts of cadmium on some plant growth parameters such as vine length, leaf
area, fresh shoot weight and fresh root weight were monitored for the Zea mays over a period of 28days. It
was observed that the level of cadmium (Cd) sorbed by the Zea mays seedling increased with increase in
cadmium (Cd) load in the soil material. The uptake efficiency which ranged from 24.8-54.6% decreases with
increase in the cadmium level in the soil. The plant was more sensitive to cadmium stress at the early stage
of development (7day old seedlings) than at later stage (21day old seedlings) though, germination rate was
not significantly affected by cadmium stress. Biomass production as well as the leaf area was not
significantly affected by the cadmium stress on the maize seedlings. It was also observed that amount of
cadmium translocated to the shoot was three times the amount accumulated at the root hence, little or no
potential effect on the crop yield and quality. Zea mays may be used as phytoremediator for soil
contaminated with cadmium
Publication Title Development of tracheobronchial fluid for in vitro bioaccessibility assessment of particulates-bound trace elements
Publication Type journal
Publisher Elsevier B. V.
Publication Authors Emmanuel Gbenga Olumayede; Ilemobayo Oguntimehin Bolanle Babalola Grace Olubunmi Sodipe; Joseph Uche, Ayomipo Ojo
Year Published 2021-09-24
Abstract This study was piloted to evaluate bioaccessibility of particulate-bound trace elements using synthetic epithelia lung
fluid;inwhichdipalmitoylphophatidylcholinewas substitutedwithlocusbeangum(LBSFL).Theresultingdata reveal
that no significant change in physicochemical characteristics of the stimulated lung fluid compare with similar
syntheticfluids; pH valueof 7.3,density (0.998gcm3
),conductivity(13.9 mS m-1), surfaceviscosity (1.136 10-12pas)
and surface tension (50.6 mN m-1). To prove the potential applicability of the fluid in in vitro bioaccessibility test, we
compared bioaccessibility of particulates-bound trace elements using this fluid with those of stimulated epithelial
lung fluid. Bioaccessibility were relatively low values (<30%) in locus bean substituted lung fluid and stimulated
epitheliallungfluid. Specifically,As andCdhadsignificantlyhigherbioaccessibility values inlocus beansubstituted
lung fluid than stimulated epithelial lung fluid. The data demonstrate that fluid formulated and used in this study
can provide a suitable means of evaluate bioaccessibility of trace elements-bound to airborne particulates.
The fluid was used for assessing bioaccessibility of particulate matters-bound trace elements
The formulated fluid can be applied to study in toxicity assessment
The data can be used for inter-laboratory comparison of bioaccessibility of particulate -bound trace element
and could stimulate environmental concerns on the impacts of airborne particulates.
Publication Title use of Diffusion Tubes to Monitor the Levels of Ambient Nitrogen Dioxide in Agbor
Publication Type journal
Publisher Department of Chemistry, Nasarawa State University, Keffi
Paper Link www.ijcsnsuk.org
Publication Authors J. I. Uche, E.E. Ukpebor, F.E. Okieimen, A.E. Onojeghuo and V.O. Omuemu
Year Published 2012-05-20
Abstract Because of the adverse effect on human health of high concentrations of ambient air pollutants, air quality monitoring is given greater attention to improve air quality. The purpose of this study is to provide information on the baseline levels of ambient nitrogen-dioxide (NO2) in Agbor, Delta-State, Nigeria. In order to quantify the levels of this of this pollutant, ten sampling sites were selected to represent different degrees of expected traffic impact, residential and commercial activities. NO2 measurements were done fortnightly for a period of twelve (12) months (October 2009 – September, 2010) using the Palmes Diffusion Tubes. Triethanolamine (TEA) coated steel grids were used as the adsorbent while air samples were collected at a height of between 1.5 – 2.0m. the annual mean NO2 range of 8.75 – 37.86?g/m3 obtained for the monitoring sites was within the Nigeria Federal Ministry of Environment (FMENV) limit of 75 - 113?g/m3 and WHO annual limit of 40?g/m3. The paired t – test statistics showed significant difference (p <0.01) in the levels of NO2 in the dry season relative to the wet season. Spatial variations in the NO2 distribution were also found to be statistically significant
Publication Title Bacterial Screening and Physicochemical Assessment of River Ethiope Portion at Okuzu inObiaruku, Delta State (A review)
Publication Type journal
Publisher Faculty of Science, Federal University Oye-Ekiti, Nigeria
Publication Authors Amitaye, Azuka Nwabike and Uche, Joseph Ifeanyi
Year Published 2017-07-21
Abstract Seasonal variation in physicochemical and biological parameters was examined for river Ethiope portion at "Okuzu" quarters in Obiaruku town. Seventy-two (72) water samples were collected during rainy and the dry seasons and analysed by standard methods for wastewater and drinking water analyses. The results revealed a dramatic decrease in water quality. From 2014 to 2016, there was about 93% increase in bacterial load, 25.4% increase in turbidity, 29.4% decrease in DO value and 10.5% increase in BOD value. These indices may cause water borne diseases if water from this source is used for drinking and other domestic purpose without proper decontamination. It is recommended that this water source be protected from further degradation by wastes discharge and adequately treated before use.
Publication Title PRELIMINARY STUDIES ON THE RELATIONSHIP BETWEEN NITROGEN-DIOXIDE LEVELS AND HUMAN HEALTH IN AGBOR; DELTA-STATE, NIGERIA.
Publication Type journal
Publisher Faculty of Science, Federal University Oye-Ekiti, Nigeria
Publication Authors Uche, J.I., Olumayede E.G, Okieimen F. E., Onojeghuo A. E., Omuemu V. O.
Year Published 2016-05-03
Abstract Nitrogen -dioxide (NO2) is an oxidant gas that can penetrate to the small airways and alveoli of the lungs and can impair defense mechanism against respiratory pathogens. This report presents a preliminary attempt to establishing a relationship between nitrogen-dioxide (NO2) levels and Human health impact in Agbor. Ten sites were selected to represent areas where air pollution levels might be highest or present particular threat. NO2 monitoring was done for a period of twelve months. Health outcomes of interest were evaluated from responses to completed questionnaires. The highest indoor NO2 concentration of 50.02 ?g/m3 was recorded in site TL while site OD recorded the least value of 5.18?g/m3. Indoor NO2 mean values ranged between 7.28 and 39.93?g/m3. The correlation between the incidence of the prevalence of respiratory diseases and NO2 levels were evaluated. The result revealed a very low correlation (r =0.076) between NO2 levels and respiratory symptoms.
Publication Title PHYTOEXTRACTION AND TRANSLOCATION OF LEAD AND CHROMIUM FROM CONTAMINATED SOIL USING ZEA MAYS SEEDLINGS
Publication Type journal
Publisher Chemical Society of Nigeria, Edo Chapter
Publication Authors AMITAYE, AZUKA NWABIKE AND UCHE, I. JOSEPH
Year Published 2016-08-11
Abstract Environmental contamination is a threat to life system and sustenance of the ecosystem. Lead and chromium commonly occur in the environment due to their wide industrial uses, their economic importance on human health and loss of agricultural production as well as the varying degree of bio-concentration of metals among plant species informed the present study. This study was designed to evaluate Zea mays efficiency to phytoextract lead and chromium from soil matrices contaminated with different amounts of lead and chromium salts. The results revealed that chromium translocation to shoot region was directly related and with very strong positive correlation (r = 0.996) with the amount retained at the root region while for lead (r=0.988), translocation to the shoot was inversely related with the amount of lead at the root region. It was also found that Zea mays plant has higher efficiency to uptake chromium (49.11% to 79.26%) than lead (35.38% to 75.50%) for the contamination levels examined. It was therefore concluded that Zea mays L can be used for lead and chromium extraction and uptake from metal polluted soils. However, further work to study the effects of lead and chromium on Zea mays L biomass production and on some growth parameters such as root and shoot lengths, leave area ratio, and root hair development is recommended.
Publication Title Determination of vitamin C in some green leafy vegetables from Agbor, Delta state
Publication Type journal
Publisher Chemical Society of Nigeria, Edo Chapter
Publication Authors Azuka Nwabike Amitaye and Joseph Ifeanyi Uche
Year Published 2017-09-09
Abstract Fresh vegetables are good sources of vitamin C worldwide. Vitamin C is a water-soluble antioxidant with immune-enhancing effects and an anti-stress agent. The objective of this study was to determine vitamin c contents of commonly consumed vegetables available in Agbor town Delta-State. Seven (7) different kinds of green leafy vegetables were obtained from farms and mini gardens within Agbor town. Fifteen grammes of each vegetable species were separately homogenized in 10% trichloroacetic acid and the total ascorbic acid contents in the extracts were determined using a spectrophotometric method at wavelength of 550nm. The value of ascorbic acid (AA) obtained range from 3.69 ±0.01 to 127.56±0.02mg/100g fresh weight (FW). The utazi leaf has the highest value (127.56 ±0.02mg/100g FW) while the ujuju leaf has the lowest amount of AA (3.69 ±0.01mg/100gFW). The vitamin C content of the vegetables is in the order Utazi leaf > spinach leaf > pumpkin leaf > potato leaf > bitter leaf > water leaf > Ujuju leaf. It was concluded that when these vegetables are consumed in relative amount, they will contribute to the daily dietary requirement of vitamin C for man
Publication Title Environmental and human health risk assessments of polycyclic aromatic hydrocarbons in particulate matter in Nigeria
Publication Type journal
Publisher Springer
Publication Authors Thompson Faraday Ediagbonya, Olalekan Charles Oyinlusi, Enosakhare Godwin Okungbowa, Joseph Ifeanyi Uche
Year Published 2022-07-07
Abstract Polycyclic aromatic hydrocarbons (PAHs) are an important organic group in particulate matter which has attracted much attention among the scientific community in terms of health risk because of their carcinogenic, mutagenic, and ubiquitous nature in the environment. In this study, PAHs in particulate matter in Okitipupa were determined. Indoor and outdoor particle samples were sampled with the aid of SKC Air Check XR5000 high-volume gravimetric sampler, and analyzed using gas chromatography flame ionization detector (GC-FID). The results obtained showed that high molecular weight PAHs (5-ring, 6-ring PAHs) had higher mean concentration than low molecular weight PAHs (2-ring, 3-ring PAHs), in both indoor and outdoor particulate matter. Health risk assessments from exposure to these PAHs were also determined using toxicity equivalence quotient (TEQ), mutagenicity equivalence quotient (MEQ), incremental life cancer risk (ILCR), and hazard quotient (HQ). Dibenz(a,h)anthracene had the highest mean concentration across the sample location in both indoor and outdoor with values ranging from 33 to 31 and 90 to 93 µg/m3 respectively. The total mean concentration in outdoor PAHs ranged from 280 to 329 µg/m3, while total mean concentration in indoor PAHs ranged from 74 to 104 µg/m3. The incremental lifetime cancer risk in indoor ranged from 6.9?×?10–7 to 1.2?×?10–5, while the ILCR in outdoor ranged from 8.5?×?10–6 to 1.0?×?10–5. The hazard quotient in indoor ranged from 7.6?×?10–5 to 2.2?×?10–3, while the HQ in outdoor ranged from 10?×?10–4 to 1.4?×?10–3. These values are within the WHO permissible limit, and therefore underscores the danger associated with the inhalation of polycyclic aromatic hydrocarbons in Okitipupa.
Publication Title INDOOR/OUTDOOR AIR QUALITY NITROGEN-DIOXIDE RELATIONSHIP AT SELECTED LOCATIONS IN AGBOR; NIGER-DELTA REGION.
Publication Type conferenceproceeding
Publisher t © Chemical Society of Nigeria,
Publication Authors J.I. Uche and E.E. Ukpebor
Year Published 2010-09-21
Abstract Much of the health impact from air pollution worldwide seems to occur among the poorest and most vulnerable
populations. The main aim of this study was to determine the levels of nitrogen dioxide concentrations both
outside and inside homes and estimate the indoor/outdoor ratios at selected areas in Agbor. Measurement was
carried out at ten locations indoor and outdoor by use of Palmes diffusion tubes. Indoor and Outdoor NO2
levels were determined every two weeks for the period October, 2008- September, 2009. The maximum mean
monthly indoor and outdoor NO2 values of 50.02µg/m3
and 47.32µg/m3
respectively were recorded at site
AG/TL .The annual mean outdoor NO2 concentration ranged from 8.75 – 37.86µg/m3 while the annual mean
indoor NO2 levels ranged from 7.28 – 39.93µg/m3
.The mean indoor/outdoor ratio was 0.91 (s = 0.11).
Statistical analysis show that there exist a positive correlation between indoor and outdoor NO2 (r = 0.87; p?
0.05). When compared with statutory limits nationally (FMENV) and internationally (WHO), the values of NO2
obtained in this study both indoor and outdoor lies below the permissible limits.
Publication Title Spatial and Diurnal Patterns of Carbon-monoxide (CO) Pollution from Vehicles in an Upland Environment Niger-Delta Region, Nigeria
Publication Type conferenceproceeding
Publisher Chemical Society of Nigeria.
Publication Authors J.I.Uche, E>E> Ukpebor, & F.E. Okieimen
Year Published 2011-09-19
Abstract The abundance of trace gases in the atmosphere often determines the air quality of a region and influence the radiation budget of our planet. Under insufficient oxygen condition during all burning processes, carbon monoxide (CO), an odourless, toxic gas is formed. The ambient levels of CO, its diurnal patterns and link with meteorological parameter and traffic density were examined using a dosimeter BK Precision 627 carbon -monoxide sensor at ten (10) selected locations at Agbor. Measurement was done every hour, four times a week during the daytime for the period October 2009 – March 2010. At the 10 sampling locations selected, high hourly mean CO values (5 – 18ppm) were recorded during the morning hours. The hourly mean distribution pattern of CO showed three characteristic peaks which were associated with the traffic loads on the main streets. The highest hourly mean CO load of 18ppm was recorded for the traffic light location. Highest mean wind speed of 2.4m/s was recorded at Uromi junction location. Spatial variation in the mean CO data was significant (p<0.05).
Publication Title Assessment of Heavy Metals in Borehole Water in Obiaruku Town; Delta-State, Nigeria
Publication Type conferenceproceeding
Publisher Chemical Society of Nigeria.
Publication Authors J.I. Uche & A. N. Amitaye
Year Published 2013-09-16
Abstract An assessment of Borehole Water quality was carried out for Obiaruku town, Ukwuani Local Government Area of Delta -state. Water samples from nine boreholes randomly selected were analysed for some pollution indicators using standard methods. The results show that many of the physicochemical parameters determined were within the World Health Organization (WHO) permissible levels for drinking water and the Nigeria Standard for Drinking Water Quality (NSDWQ). Levels of some the physicochemical parameters determined ranged from 4.6 – 6.8 (pH units); 46.3-620?S/cm (EC); 0.05-2.37NTU; 0.030 – 0.135mg/l (Mn); 0.009 – 0.84mg/l (Zn); 0.030-1.23mg/l (Fe); 0.00-0.06mg/l (Cu); and 0.00 -0.001mg/l (Cd). Water from boreholes in Obiaruku town is abstracted directly for domestic and industrial uses without any form of treatment hence, this study.
Publication Title SPATIAL PATTERNS OF A WEAK GREENHOUSE GAS (GHG) IN AGBOR; NIGER-DELTA REGION, NIGERIA
Publication Type conferenceproceeding
Publisher Chemical Society of Nigeria.
Publication Authors J.I. UCHE; A.N. AMITAYE & E. E. UKPEBOR
Year Published 2018-09-16
Abstract Quantifying the levels of Carbon-monoxide (CO) in ambient air is vital in determining air quality. Being a toxic gas, carbon-monoxide is a criteria pollutant but also a weak Greenhouse gas. Mortality from CO poison has been severally reported. The Baseline and Spatial patterns of ambient Carbon-monoxide (CO) in Agbor, Niger-delta region, Nigeria was continuously monitored using a CO Dosimeter (BK Precision 627 carbon-monoxide meter), for the months of November 2015 – March 2016. The BK Precision 627 carbon -monoxide meter is a portable, compact size digital meter that measures CO levels within the range 0 – 1000ppm. Ten (10) sampling sites were carefully selected to cover major activities within the town. Insitu CO values were determined between the hours, 8:00am and 6:00pm four times a week throughout the sampling period. A mean CO range of 2.93-8.68ppm was obtained for the study. The highest mean CO concentration of 8.68ppm was recorded at site D in the month of December 2015. A significant variation in the spatial distribution of CO was observed (p < 0.05). however, the values obtained in this study are lower than the WHO and FMENV statutory limits.
Publication Title ASSESSMENT OF TOXIC HEAVY METALS IN CHICKEN FEEDS SOLD IN DELTA-STATE; NIGERIA
Publication Type conferenceproceeding
Publisher Chemical Society of Nigeria.
Publication Authors J.I. UCHE AND A.N. AMITAYE
Year Published 2018-09-16
Abstract Four brands (starter, grower, finisher and layer ) of three commercial feeds ( X, Y and Z) commonly used by poultry farmers in Delta state were analysed for toxic heavy metals {Cadmium(Cd), Lead (Pb), Chromium (Cr) and Arsenic (As)}. The samples (feeds) were purchased from different markets and retail stores at Agbor, Ughelli, and Obiaruku towns in delta state. The samples were processed for analysis by applying the dry-ashing and wet-digestion methods and subsequently analysed for metal concentration using Atomic Absorption Spectrometer (AAS). The results of the determination show that all the feed brand and feed type studied were contaminated with Cd, Pb, Cr and As. The concentrations obtained in mg/kg were in the range of 0.023±0.006 to 0.093 ±0.006mg/kg, 0.043 ±0.006 to 0.150 ± 0.98mg/kg, 0.014 ±0.005 to 0.080 ± 0.01mg/kg and 0.100 ±0.010 to 0.093 ± 0.006mg/kg for Cd, Pb, Cr and As respectively. In order of decreasing metal contamination: X > Y >Z, though the levels of the toxic metals examined were all within the WHO minimum permissible limits. These contaminations may result from street dust that may originate from anthropogenic activities such as high vehicular traffic volumes, fuel burning, corrosion of different part of vehicles, etc. during transportation and storage. It is recommended that appropriate measure be taken to forestall any potential metal enrichment of these chicken feed stocks.
Publication Title SURFACTANTS AND PHOSPHATE LEVELS IN OROGODO RIVER
Publication Type journal
Publisher ENUGU STATE UNIVERSITY OF SCIENCE AND TECHNOLOGY, A JOURNAL OF NIGERIAN RESEARCHERS FORUM
Publication Authors Uche J.I, and Iyasele, J.U
Year Published 2005-11-19
Abstract The seasonal variation in concentration of phosphate and surfactants as methylene Blue Active Substance (MBAS) levels in Orogodo River was evaluated in accordance with the standard methods, APHA (1985). Composite samples for each sampling site were made by adding together volumes of samples proportional to the rate of flow. The result of the monitoring gave a mean value of 0.29 and 0.79mg/l for MBAS and phosphate respectively for the Orogodo river. Seasonal variation has little effect on the MBAS values.
Publication Title ASSESSING THE VARIABILITY OF INDOOR AND OUTDOOR CARBON-MONOXIDE LEVELS IN ALISIEME (RURAL) COMMUNITY; DELTA-STATE, SOUTH-SOUTH NIGERIA.
Publication Type journal
Publisher INTERNATIONAL JOURNAL OF CHEMISTRY, INSTITUTE OF SCIENCE & TECHNOLOGY, CALCUTA INDIA
Publication Authors J.I. UCHE AND E.E. UKPEBOR
Year Published 2010-08-17
Abstract Most of a person’s daily exposure to many air pollutants come through inhalation of indoor air because people spend the majority of their time indoors. This study report results of an investigation into the relationship of outdoor and indoor air quality in Alisieme (rural) community in Delta-state, Nigeria; for the period May – September 2009. In order to characterize the indoor and outdoor air quality, five homes and five sampling points were selected for the study. The CO levels in the selected sites were continuously monitored every half-hour for eight (8) hours (8:00am – 4:00pm) at a frequency of 3 times a week and at a height of between 1.5 – 2.0m throughout the sampling period using a Dosimeter (BK Precision 627 Carbon-monoxide meter). The mean concentrations of carbon-monoxide measured range from 0.44ppm – 2.15ppm outdoor and 1.36ppm – 3.94ppm indoors. Statistical correlation between indoor and outdoor concentration levels were calculated for all the homes. The result reveals that indoor concentration was higher than the outdoor levels and there exist a positive correlation (r = 0.980) between indoor and outdoor levels.
Publication Title STUDIES IN THE PHYSICO-CHEMICAL CHARACTERISTICS OF OROGODO RIVER
Publication Type journal
Publisher INTERNATIONAL JOURNAL OF CHEMISTRY, INSTITUTE OF SCIENCE & TECHNOLOGY, CALCUTA INDIA
Publication Authors I. UCHE
Year Published 2007-04-22
Abstract Studies in the physicochemical characteristics on Orogodo River were analysed during the period November 2003 to October 2004 to ascertain if the parameters are in compliance with the WHO standard for drinking water. The physicochemical parameters analysed were Dissolved Oxygen(DO), Biochemical Oxygen Demand (BOD), total Alkalinity, iron content and Conductivity. The results obtained show a high level of alkalinity and BOD for the Orogodo river. The DO levels were also low though within the WHO acceptable limit. The result obtained show that the Orogodo river is moderately polluted at point B.
Publication Title evaluation of polychlorinated biphenyls in sediments from surface waters of Igodan, Okunmo, Lebi, Idepe and OAUSTECH in Okitipupa, Ondo state Nigeria
Publication Type journal
Publisher JASEM
Paper Link https://dx.doi.org/10.4314/jasem.v27i9.22
Publication Authors Ediagbonya T.F., Uche J.I., Oghenvovwero, E. E; Akinrefon, D. O
Year Published 2023-09-30
Abstract The presence of PCBs in water bodies is an emerging issue for water quality. This is because,
once PCBs reach a lake or river, they concentrate in the sediments by attaching to the organic matter. Therefore, the
objective of this paper is to evaluate the level of polychlorinated biphenyls (PCBs) in sediment from surface waters
of Igodan, Okunmo, Lebi, Idepe and Oaustech in Okitipupa, Ondo State Nigeria using appropriate standard methods.
Data obtained reveals that in Igodan the concentration of PCBs in sediment w.as PCB 44 (5.42±0.00), PCB 18
(3.04±0.00), PCB 28 (3.27±0.07) and PCB 170 (6.60±0.00). Okunmo PCBs concentration in sediment was PCB 44
(0.67±0.00), PCB 18 (0.03±0.00), PCB 28 (0.32±0.00) and PCB 170 (0.18±0.00). Lebi PCBs concentration in
Sediment was PCB 44 (0.82±0.00), PCB 18 (3.96±0.00), PCB 28 (1.12±0.00) and PCB 170 (1.08±0.00). Except for
PCB 170 (0.33±0.02), the PCB concentration in sediment from the Idepe and the OAUSTECH were both below the
detection limit (BDL). Correlation between Physicochemical Parameters and PCBs homologs shows a negative
correlation for the relationship of EC (Electrical Conductivity), TOC (Total Organic Carbon) and pH at ( -0.283), (-
0.262) and ( -0.246) respectively. According to multivariate investigation, releases from nearby factories,
deterioration of electrical cables and transformers, waste from university laboratories and facilities, as well as diesel
residues from lister engines could be associated with the elevated levels of PCBs in sediments collected from the
five sampled sites in Ondo State. TriPCBs > tetraPCBs were in this order in which the median concentrations of
PCB homologues were found in sediments from the surface water.