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Tytuł:
Radiation levels of dumpsites within Imo State University, Owerri, Imo State, Nigeria
Autorzy:
Wirnkor, Verla Andrew
Ebere, Enyoh Christian
Chukwunonso, Okonkwo Felix
Ngozi, Verla Evelyn
Powiązania:
https://bibliotekanauki.pl/articles/1114110.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Environmental monitoring
Ionizing
Public health
waste
Opis:
With increasing population and human activities, dumpsites experience diverse sources of waste with potential radiation hazards. Ionizing radiations have often been overlooked amongst researchers in third world countries, hence, information in this regard is lacking. In this study, nine dumpsites within Imo State University (IMSU) grounds were assessed for radiation levels using Geiger Muller counter Tube Mullard type ZP 1481 with assisted scalar and stopwatch. After calibration, the instrument was placed one meter above ground level and count rates recorded at 10 minutes interval for each location once in the morning, the afternoon and the evening for seven days. Results reveal higher dose equivalents in some morning periods than in the afternoon and evening. Site ETF2 had highest value of 0.69±0.08 mSv·yr-1, while Extension gate had lowest value of 0.56±0.01 mSv·yr-1. Compared to National Council for Radiation Protection maximum permissible level, these values are quite low. In conclusion, ionizing radiations levels at the studied dumpsites in Imo State University grounds are low and may not pose a threat to persons within the university.
Źródło:
World News of Natural Sciences; 2017, 11; 45-64
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of Adhesive from Cassava Starch in Owerri, Imo State, Nigeria
Autorzy:
Chukwuemeka, Ihenetu Stanley
Ugochukwu, Igbokwe Winner
Powiązania:
https://bibliotekanauki.pl/articles/1114031.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Adhesive
Cassava
Starch
Opis:
In this work, the potentials of adhesives production from cassava starch were investigated. An adhesive product produced from Manihot utilissima was compared with a commercially available adhesive. Improvements in the properties of the cassava-based adhesive were achieved by investigating the effects of temperature and the addition of a viscosity enhancer/stabilizer (borax) on the density of the produced adhesive. The results obtained provide a wide range of insight into the production potentials of using cassava starch as a raw material in the production of large scale adhesives.
Źródło:
World News of Natural Sciences; 2017, 11; 5-10
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical properties and selected metals in soils of Ohaji-Egbema, Imo State, Nigeria
Autorzy:
Chukwuemeka, Apakama N.
Ngozi, Verla E.
Chukwuemeka, Ihenetu S.
Wirnkor, Verla A.
Powiązania:
https://bibliotekanauki.pl/articles/1114214.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Characterization
Heavy metals
Oil pollution
Opis:
This study assesses the physiochemical characteristics and heavy metals content of crude oil polluted soils and non-polluted soils from Ohaji/Egbema, Imo State. Soil samples were collected at depths of 0-30 cm at each sampling point and then analyzed using standard analytical methods. Data from the five areas were compared to standards for soils in Nigeria and in World Health Organization (WHO) data banks. The results obtained from the analysis showed an average pH of (4.88 ± 0.02 to 5.02 ± 0.04) for polluted soil and (6.57 ± 0.05 to 6.82 ± 0.03) for non-polluted soil, electrical conductivity (571 ± 1.1 to 592 ± 0.8 µS/cm) for oil polluted soil and (383 ± 0.5 to 415 ± 1.6 µS/cm) for non-polluted samples, moisture content (5.2 ± 0.2 to 9.1 ±0.1 %) for polluted soil and (4.5 ± 0.1 to 4.7 ± 0.3 %) for non-polluted soil samples. There was no significant difference in temperature and organic matter for both the polluted and non-polluted soil samples. The heavy metals analysis results showed Fe3+ (0.615 to 0.989 ppm) for oil-polluted soil samples and (0.0453 to 0.273 ppm) for non-polluted soil samples, Pb2+ (0.017 to 0.180 ppm) for oil-polluted soil and (0.008 to 0.010 ppm) for non-polluted soil. The study reveals that areas that are polluted need urgent remediation if the soil is to be used for agricultural purposes.
Źródło:
World News of Natural Sciences; 2017, 10; 39-48
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microorganism Associated with Cassava Fermentation for Abacha Product Sold in Owerri, Imo State
Autorzy:
Ihenetu, Francis Chukwuebuka
Ihenetu, Stanley Chukwuemeka
Ohalete, Chinyere N.
Njoku-Obi, Treasure Njideka
Okereke, Bright Chinemerem
Powiązania:
https://bibliotekanauki.pl/articles/1113923.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Abacha
Bacteria and fermentation
Cassava
Fermentation
Microorganism
Opis:
The microorganism associated with cassava fermentation for producing Abacha was investigated using four different Farms in Owerri (Obinze, Umugwuma, Urata and Orji) as sample collection areas. Four of the cassava tubers that harvested, were washed, cooked and soaked with water after cutting to produce Abacha, which was then fermented using standard microbiological methods. The wastewater was subsequently sampled. All the samples A, B, C, and D showed significant bacteria growth after application of NA, MRS, PDA. In the study, six bacteria and fungi isolates were identified: Escherichia coli, Staphylococcus aureus, Lactobacillus spp, Candida spp., Aspergillus spp. and Bacillus spp. Results showed that the total heterotrophic bacteria count of the sample varies within 8.0×1010 to 2.5×1012 and total fungi count (TFC) ranges from 6.6×109 to 9.6×109. The study also showed that Lactobacillus spp. and Escherichia coli had the highest prevalence occurrence of 75.00% (P < 0.05), while Staphylococcus aureus, Saccharomyces spp., Bacillus spp. and Candida spp. had a percentage occurrence of 50.00%, respectively. There is, therefore, urgent need for public enlightenment on public health implications, need for proper hygiene, as well as need for strategies for preventing and controlling the microorganisms which do not play a role in the fermentation of cassava for Abacha production.
Źródło:
World News of Natural Sciences; 2017, 12; 43-50
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal variability of carbon monoxide (CO) in the ambient environment of Imo State, Nigeria
Autorzy:
Njoku, P.
Ibe, F.C.
Alinnor, J.
Opara, A.
Powiązania:
https://bibliotekanauki.pl/articles/10877.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
The air qualities of four areas in Imo State with a total of twenty two locations were monitored for a period six months with respect to CO level using Gasman air monitor (Crowcon Instruments Ltd, England. The air quality monitoring was conducted in the morning, afternoon and evening hours within dry and wet seasons in order to elucidate the variability of this atmospheric pollutant in the study locations. The results obtained showed significant variation of the air pollutant in the morning, afternoon and evening including within the twenty four weeks, and between dry and wet seasons. The mean values of CO in the dry season are in the order Egbema > Okigwe > Owerri > Orlu, while the order for the mean CO level in wet season is Okigwe > Orlu > Egbema > Owerri. Elevated concentration of CO was observed in the study areas above 10 ppm, the Nigerian National ambient air quality standard. This observation calls for health and environmental concern. Hence, anthropogenic activities and fugitive emission sources of atmospheric pollutants such as increased vehicular traffic, biomass combustion, use of electric power generating sets, leakages from incinerators and flare stacks should be seriously monitored.
Źródło:
International Letters of Natural Sciences; 2016, 53
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical parameter of palm oil and soil from Ihube community, Okigwe, Imo State Nigeria
Autorzy:
Enyoh, C.E.
Ihionu, E.A.
Verla, A.W.
Ebosie, P.N.
Powiązania:
https://bibliotekanauki.pl/articles/11246.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2017, 62
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geospatial and geostatistical analyses of particulate matter (PM10) concentrations in Imo State, Nigeria
Autorzy:
Iheanyichukwu, O.A.
Chizoruo, I.F.
Chukwuemeka, N.P.
Ikechukwu, A.J.
Kenechukwu, E.C.
Powiązania:
https://bibliotekanauki.pl/articles/11174.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
Geospatial and geostatistical analysis of particulate matter (PM10) variation in Imo State, Nigeria was carried out. The objectives of the study were to determine and analyze the variation in concentration of ambient PM10 level in Imo State, Nigeria. Air quality sampling was conducted within November 2014 and June 2015, in wet and dry seasons three times daily using Haze Dust Particulate Monitor (10μm). The mean concentration of PM10 level observed in the study varied from 5.22 - 6.63mg/m3 in wet season and 5.80 - 8.38 mg/m3 in dry season. Coefficient of variation (CV %) revealed that the variability of PM10 level ranged between little and moderate variations in both wet and dry season. Analysis of variance (ANOVA p<0.05) showed statistically significant variation in the mean PM10 level in the study locations. Box and Whisker plots confirmed variation of PM10 in the morning, afternoon and evening. The GIS plots revealed the spatial attributes of the air pollutant in the study locations. Time series plots indicate that the air pollutants fluctuated throughout the study duration. The Wind Rose suggests that the prevailing wind speed and wind directions were responsible for the dispersal migration of the air pollutant in the study area. The highest seasonal mean values were observed in Egbema and Okigwe area in both dry and wet season. The seasonal mean values recorded in the study exceeded the Nigerian National Ambient Air Quality Standards. This calls for urgent response to prevent further air quality deterioration and its negative effects on man and the environment.
Źródło:
International Letters of Natural Sciences; 2016, 57
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality Assessment of Palm Oil from Different Palm Oil Local Factories in Imo State, Nigeria
Autorzy:
Chinedu, Enyoh Emmanuel
Ebere, Enyoh Christian
Emeka, Amaobi Collins
Powiązania:
https://bibliotekanauki.pl/articles/1178270.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Factory
Health
Imo State
Impurity
Palm oil
Storage
dulteration
Opis:
Palm oil is the most commonly used vegetable oil in Nigeria due to its numerous benefits. Therefore, it is very important to investigate the quality of palm oil. In this study, oil samples were collected from different oil mills in Imo state. Physical and chemical properties of the oil samples were evaluated using standard procedures. The result showed that the moisture content ranged from 0.26% to 0.33%, specific gravity ranged from 0.8900 to 0.9250 while the density ranged from 0.8700 g/ml to 0.9100 g/ml. The saponification value (SV), Free fatty acid and Acid value ranged from 192.49 mg KOH/g to 202.73 mg KOH/g, 10.38 mg KOH/g to 18.80 mg KOH/g and 20.76 mg/g to 37.59 mg/g respectively, while the Smoke point and Refractive index ranged from 114.0 °C to 116.2 °C and 1.4615°Bx to 1.4640°Bx respectively. The peroxide value, Iodine value and Ester value ranged from 14.10 mEq./g to 24.80 mEq./g, 0.48wij’s to 2.84wij’s and 160.86 to 172.86 respectively. All samples showed > 35% SV suggesting the palm oil will be good in soap production. It is recommended that oil palm factories in Imo state processing and storage method should be properly monitored to prevent major contamination or adulteration which might have an adverse effect on the future of oil palm industry in Imo state, Nigeria.
Źródło:
World Scientific News; 2017, 88, 2; 152-167
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk associated with heavy metals in children playground soils of Owerri metropolis, Imo State, Nigeria
Autorzy:
Wirnkor, Verla Andrew
Evelyn Ngozi, Verla Evelyn
Powiązania:
https://bibliotekanauki.pl/articles/1118068.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bioconcentration
Metal fractions
Models
Predictive
Risk
Opis:
Despite recording the worst heavy metal disaster involving children, there is still scarcity of information on risk assessment of playground soils in Nigeria. In this study, thirty-six soil samples at 0-5 cm depth were collected from nine playgrounds in Owerri metropolis during the dry and rainy seasons. Five heavy metals were fractionated into six chemical fractions using a modified sequential extraction scheme and mean concentrations quantified by AAnalyst 400 Perkin Elmer AAS. Predictive risk models were used to obtain information about the risk of metals contamination to children using these playgrounds for longer periods. These reveal that there were no significant differences in the mean values of bioconcentration factors of all five metals in the various playgrounds for the two years of data. Even though risk values for both dry and rainy season followed the same trend, it was observed that the Zinc showed highest bioconcentration factors (1.6), average daily dose (230.08 mg/kg/day) and risk (5095593 mg/kg/6years). Over all, playgrounds UPS, TSO and SCP had highest mean risk values, respectively. Though with no clear trend, mobility factors showed a weak and positive correlation with risk. Children in playgrounds of public schools within Owerri metropolis could, therefore, be at risk of Mn, Cu and Zn toxicity problems as projected risk values were high for all studied playgrounds. This assessment could help identify playgrounds with urgent need for heavy metals reduction goals, consequently contributing to preserving children’s health.
Źródło:
World News of Natural Sciences; 2017, 10; 49-69
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epidemiology of tree-hole breeding mosquitoes in the tropical rainforest of Imo State, South-East Nigeria
Autorzy:
Anosike, J C
Nwoke, B.E.B.
Okere, A.N.
Oku, E.E.
Asor, J.E.
Emmy-Egbe, I.O.
Adimike, D.A.
Powiązania:
https://bibliotekanauki.pl/articles/50771.pdf
Data publikacji:
2007
Wydawca:
Instytut Medycyny Wsi
Tematy:
ecology
South-East Nigeria
yellow fever
mosquito
epidemiology
tree hole
Nigeria
human disease
Imo State
forest reserve
disease vector
rural area
tropical region
Opis:
The study of tree-hole breeding mosquitoes was carried out in the tropical rainforest of Imo State Nigeria (two rural areas and two forest reserves in some parts of Orlu Senatorial Zone) between May – October 2002. Using standard entomological procedures, two macrohabitats (natural tree-holes and bamboo traps) and two microhabitats (leaf axils of cocoyams/pineapples and leaf axils of plantain/banana) were sampled for various mosquito species. Mosquitoes were recovered from all the various biotypes sampled. Types of mosquitoes species encountered, their relative abundance, as well as genera varied signifi cantly during the study (p<0.05). Four genera of mosquitoes: Aedes, Culex, Anopheles and Toxorhynchites were recovered while 16 species of mosquitoes encountered include: Aedes aegypti, Ae. africanus, Ae. simpsoni, Ae. albopictus, Ae. stokesi, Ae. taylori, Ae. apicoargenteus, Culex quinquefasciatus, Cx. nebulosus, Cx. trigripes, Cx. decens, Anopheles gambiae, An. funiestus, An. coustani and Toxorhynchites viridibasis. Most of the mosquitoes showed oviposition preferences for one or more habitats. The presence of Ae. africanus, Ae. simpsoni and Ae. aegypti indicate that the study areas were at risk of yellow fever epidemic. The presence of Anopheles and Culex species ensured endemicity of malaria and fi lariasis, while the recovery of Ae. albopictus in this region suggests a possible outbreak of dengue fever in future if not properly controlled.
Źródło:
Annals of Agricultural and Environmental Medicine; 2007, 14, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibacterial potentials of Vernonia amygdalina against antibiotic-resistant salmonella specie isolated from Nworie River, Imo State, Nigeria
Autorzy:
Chikwendu, C.I.
Egbadon, E.O.
Okuma, B.
Powiązania:
https://bibliotekanauki.pl/articles/11856.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
Salmonella species were isolated from Nworie River and then tested against several antibiotics to include; Gentamycin, Streptomycin, Amoxycillin, Kanamycin, Oxacillin, Ofloxacin, Imipenem, Ciprofloxacin, Aztreonam and Ceftazidime. Salmonella isolates obtained from the river were resistant to at least three different antibiotics. All isolates were resistant to Amoxycillin, Oxacillin and Iminipem showing a 100% resistant rate, while showing sensitivity to Ciprofloxacin, Aztreonam, Gentamycin, Ceftazidime, Kanamycin, Streptomycin, and Ofloxacin at sensitivity rates of 71.4%, 7.1%, 77.1%, 11.4%, 44.3%, 48.6% and 78.6% respectively. The antibiotic-resistant Salmonella species were further tested against the aqueous, ethanol and acetone extracts of Vernonia amygdalina leaf, stem and roots to assess their antibacterial potential at a concentration of 100mg/ml. Aqueous extracts of the leaf, stem and roots showed no activity against antibiotic resistant Salmonella isolate, while the ethanol and acetone extracts showed activity rates of 20% and 17% for roots, 14.3% and 12.9% for stem, and, 15.7% and 11.4% for leaf. The results from this study further confirms the antibacterial potentials of Vernonia amygdalina against antibioticresistant bacterial isolates.
Źródło:
International Letters of Natural Sciences; 2016, 56
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adherence to Highly Active Antiretrovial Therapy Among Patients Receiving Treatment in Imo State University Teaching, Hospital, Orlu, Nigeria
Autorzy:
Nwokorie, I. C.
Ezeama, M. C.
Nwanjo, H. U.
Powiązania:
https://bibliotekanauki.pl/articles/1839410.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Acquired immunodeficiency syndrome (AIDS)
Adherence
Human Immunodeficiency Virus (HIV)
Imo State
Opis:
This study investigated Adherence to Highly Active Antiretroviral Therapy (HAART) among HIV positive patients receiving treatment in Imo State University Teaching Hospital Orlu. A prospective descriptive survey was adopted which involved hundred and fifty-three respondents (153) and twenty-five (25) clinic staff working in the Community Medicine of the Hospital. The instrument for data collection was structured questionnaire. Data were analyzed using SPSS version 25. Findings revealed that majority of the respondents 87(82.9%) agreed that they adhered strictly to their drugs prescriptions as ordered. 80(76.2%) of the respondents had no complaints about side effects, while 20 (95.2%) of the respondents reported poverty as one the challenges experienced for non-compliance to adherence, 12(57.1%) of them indicated forgetfulness as a major factor affecting their compliance to the HAART regimen, which is below the adherence level of ≥ 95% needed for HIV infected patients to reach full viral suppression. The study concluded that there is a fair adherence level of 87(82.9%) of HIV positive patients attending HAART clinic in IMSUTH but need to improve to reach ≥ 95% to enable HAART patients achieve full viral suppression. Health personal should emphasis more on teaching HAART regimen to HIV infected patients and also should be more focus to achieve more results.
Źródło:
World Scientific News; 2021, 161; 90-110
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of gas flaring on the physicochemical and microbiological quality of water sources in Egbema, Imo State, Nigeria
Autorzy:
Braide, W.
Nwachukwu, J.
Adeleye, S.A.
Egbadon, E.O.
Powiązania:
https://bibliotekanauki.pl/articles/11596.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
This study evaluated the effects of gas flaring on the physico-chemical and microbiological characteristics of water sources at Egbema, Imo State, Nigeria. Surface and ground water samples from the area were compared with samples from Ihiagwa Autonomous Community in Owerri West, a non-gas flared community. Both water sources were then compared with WHO standards for drinking water. The results revealed that water sources from the gas flared area have high levels of temperature, total chlorine, nitrate, nitrites, sulphates, calcium, and zinc, chromium with a very acidic pH when compared with water from non-gas flared sources. Also, microbial load increased the farther the distance from the flare site. The human health imparts of the presence of heavy metals and microorganisms in drinking water had been reported. In conclusion, gas flaring can pollute water sources within oil and gas facilities, thereby making them unsuitable for human consumption. Oil and gas industries should therefore treat water within their areas of operations before discharged into water bodies in addition to other remediation measures as part of their social responsibility.
Źródło:
International Letters of Natural Sciences; 2016, 56
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Empirical analysis of African aubergine (Solanum gilo) - marketing and income disparity among traders in Owerri, Imo State, Nigeria
Autorzy:
Onuwa, G.C.
Powiązania:
https://bibliotekanauki.pl/articles/29430961.pdf
Data publikacji:
2024
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego; 2024, 24[39], 1; 47-58
2081-6960
Pojawia się w:
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trace metals analysis of soil and edible plant leaves from abandoned municipal waste dumpsite in Owerri, Imo state, Nigeria
Autorzy:
Ibe, Francis Chizoruo
Beniah, Obinna Isiuku
Enyoh, Christian Ebere
Powiązania:
https://bibliotekanauki.pl/articles/1113809.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Accumulation
Metal intake
Pollution indices
Risk
Zinc
Opis:
Municipal refuse may increase heavy metal concentration in soil, even at low levels, and their resulting long-term cumulative health effects are among the leading health concerns all over the world. In this study, we investigated the concentration of heavy metals in soils and edible plant leaves grown in an abandoned dumpsite along Akachi road in Owerri municipality. The soil samples were collected at each plot using a soil auger at the depth of 0-10 cm. Leaves of dominant edible plant species were selected and collected from each sample plot. The samples were dried in an oven with forced air at 40 °C, milled to fine powder then digested with 10 ml concentrated HNO3 and 5 ml concentrated HClO4 and were analyzed for Cr, Cu, Fe, Mn, Al, and Zn, using an H183200 MultiParameter Bench Photometer. Result showed that metals in in the sampled soils included (in order of quantity) Cr: 150-280 >Fe: 116.50-203 >Cu: 12.4-18.8 >Mn: 0-20 >Al: 0.08-0.16 >Zn: 0-1.4 mg kg-1 Dw. Moreover, levels of metals in the edible plant leaves are in the order of: Zn>Fe>Cu>Al>Mn>Cr. Zn, in particular, was higher than FAO/WHO recommended limits. Still, application of Pollution Load Index and Ecological risk models showed that the area is unpolluted and safe for use. Daily Metal Intake estimates indicated that zinc is mostly consumed from the plant species. The trends in Transfer Factor for the heavy metal in vegetable samples studied were in order: Zn>Al>Cu>Mn>Fe>Cr. Therefore, abandoned solid waste dumpsites contained significant concentrations of heavy metals which are later absorbed and accumulated by plants growing it.
Źródło:
World News of Natural Sciences; 2017, 13; 27-42
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
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