scholarly journals Heavy metal bio-accumulation in the kidneys of scaly and non-scaly fishes from Epe Lagoon, Nigeria

2019 ◽  
Vol 11 (2) ◽  
pp. 201-211
Author(s):  
Olufemi David Owolabi ◽  
Olufunsho Awodele
Keyword(s):  
Heavy Metal ◽  
Dissolved Oxygen ◽  
Bioconcentration Factor ◽  
Heavy Metal Contamination ◽  
Aquatic Organisms ◽  
Absorption Spectrometry ◽  
Total Alkalinity ◽  
Close Monitoring ◽  
Significant Difference ◽  
Food Fish

Introduction: Heavy metal contamination of aquatic ecosystems has been a serious concern throughout the world for many decades, and has caused devastating effects on aquatic organisms. Objective: To evaluate the levels of Cu, Zn, Fe, Pb and Cd in the kidneys of scaly (T. zillii, M. rume and R. ocellatus) and non-scaly (C. gariepinus, Ch. nigrodigitatus and S. filamentosus) fishes in Epe lagoon, Nigeria to understanding the bioaccumulation potential of the kidney relative to other organs in fish that have previously been reported in literature. Methods: We studied concentrations of copper (Cu), iron (Fe), zinc (Zn), cadmium (Cd) and lead (Pb) in the kidneys of 141 scaly fishes (Mo. rume, R. occellatus, T. zillii) and 134 non-scaly fishes (C. gariepinus, S.filamentosus, Ch. nigrodigitatus) and water samples obtained from Epe Lagoon using Standard Atomic Absorption Spectrometry methods. Results: The kidneys of R. ocellatus had the highest levels of Fe (2,92±0,10) and Cd (0,18±0,03), while that of Ch. nigrodigitatus (2,78±0,02) and T. zillii (0,31±0,02) had the lowest concentration of Fe and Cd respectively. T. zillii and M. rume accumulated Cu and Zn in their kidneys respectively more than the others. There was no significant difference (p<0,05) in mean trace metal concentrations among the scaly and non-scaly fishes. The concentrations of metals in fish specimens were below the FEPA and WHO prescribed maximum allowable limits in food fish. Dissolved oxygen (9,0±0,02) and total alkalinity (24,0±0,01) were above FEPA values (dissolved oxygen: 3,0-5,0mg/L and total alkalinity: 3,05-5,3mg/L). The ranking of heavy metals distribution in the water body was Cu (4,70)>Fe (0,72)>Zn (0,13)>Pb (0,007)>Cd (0,006). Bioconcentration factor of Zn was generally high in all species. Conclusion: Close monitoring of these metals in the fishes and the lagoon is important to ensure the safety of fish consumers in the area.

scholarly journals Heavy metal levels in cattle egrets (Bubulcus ibis) foraging in some abattoirs in Lagos State metropolis

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Elijah Abakpa Adegbe ◽  
Oluwaseyi Oluwabukola Babajide ◽  
Lois Riyo Maina ◽  
Shola Elijah Adeniji
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Accumulation ◽  
Heavy Metal Contamination ◽  
Heavy Metal Accumulation ◽  
Bubulcus Ibis ◽  
Significant Difference ◽  
Metal Levels ◽  
Lagos State ◽  
The Mean

Abstract Background Heavy metal accumulation in the ecosystem constitutes a potential toxic effect which is hazardous to human health. Increasing environmental pollution has necessitated the use of cattle egrets to evaluate the levels of heavy metal contamination, to establish their use in biomonitoring of heavy metals and to provide data for monitoring pollution in the environment. Results The present study assessed the utilization of Bubulcus ibis in monitoring pollution in five abattoirs, namely Agege, Bariga, Kara, Itire and Idi-Araba, all situated in Lagos State. The concentration of five (5) heavy metals, cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) was determined in the liver, muscle and feather of Bubulcus ibis using the atomic absorption spectrophotometer. The trend of metal accumulation was in the order: Zn > Cu > Pb > Cd > Ni for all the sampled tissues. The mean tissue concentrations of the metals were significantly different (p < 0.05) among the sites. The highest levels of metal concentration were reported in the liver in all the locations. Mean concentration of Cd in Kara (0.003 ± 0.00058) was significantly (p < 0.05) higher than those found at Agege (0.0013 ± 0.00058) and Idi-Araba (0.001 ± 0.001). A significant difference (p < 0.05) was also observed between the mean concentrations of Cu in Bariga (0.01 ± 0.001) and Idi-Araba (0.003 ± 0.001). Conclusion All the studied heavy metals were present in the liver, muscle and feathers of the cattle egrets. The contamination levels were ascertained from the study which indicated that cattle egrets are useful in biomonitoring studies and the generated data will serve as baseline data which could be compared with data from other locations for monitoring heavy metal pollution.

Heavy Metal Content in Feedstuffs and Feeds in Hubei Province, China

2020 ◽  
Vol 83 (5) ◽  
pp. 762-766
Author(s):  
CAN TAO ◽  
XIAOTIAN WEI ◽  
BEIYU ZHANG ◽  
MAN ZHAO ◽  
SHUAI WANG ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Absorption Spectrometry ◽  
Hubei Province ◽  
Incidence Rates ◽  
Metal Exposure ◽  
Atomic Fluorescence Spectrometry ◽  
Republic Of China ◽  
Feed Management

ABSTRACT Heavy metal pollution threatens the health and life of animals and humans through the food chain. This study was performed to survey the heavy metal contamination in feedstuffs and feeds in Hubei Province, People's Republic of China, from 2012 to 2016. Samples were analyzed for cadmium (306 samples), mercury (117 samples), chromium (149 samples), and arsenic (4,358 samples) using atomic absorption spectrometry or atomic fluorescence spectrometry. The incidence rates of cadmium, mercury, chromium, and arsenic contamination of feedstuffs and feeds were high, and feeds were most often contaminated with chromium, followed by arsenic, cadmium, and mercury. The concentrations of heavy metals in samples positive for cadmium, mercury, chromium, and arsenic ranged from 0.001 to 1.200, 0.002 to 6.540, 0.060 to 8737.000, and 0.070 to 33.000 mg/kg, respectively. The mineral and additive samples had higher concentrations of heavy metals. The present study findings highlight the importance of monitoring heavy metals in feedstuffs and feeds and implementing feed management and bioremediation strategies to reduce heavy metal exposure. HIGHLIGHTS

scholarly journals Sensitivity of Earthworm (Eisenia fetida) in Mining Soil from Ijero-Ekiti, Nigeria

2021 ◽  
Vol 25 (4) ◽  
pp. 609-613
Author(s):  
S.O. Agbo ◽  
M.A. Mustapha ◽  
C.E. Ogaugwu ◽  
O.G. Sodipe ◽  
E.C. Chukwu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Rural Communities ◽  
Metal Contamination ◽  
Eisenia Fetida ◽  
Heavy Metal Contamination ◽  
Absorption Spectrometry ◽  
Mining Site ◽  
Mining Soil ◽  
Reference Soil ◽  
Metal Levels

Excavation and processing of mineral deposits are valuable revenue sources yet they contribute serious environmental problems worldwide. Mining activities are widespread and contribute to heavy metal contamination in rural communities in Ekiti State, Nigeria. Available research failed to establish how mining soil may impact on resident terrestrial organisms. This study assessed the health of soil from active mining site by testing it on earthworms (Eisenia fetida) for 10 weeks. Survival, mobility, morphology and behaviour of worms were assessed while soil was analyzed for selected heavy metals by atomic absorption spectrometry. Worm survival was evident as the proportion of reference soil increased in exposure mixture and improved until 92% in the control. Worms curled up at the bottom of test vessels with varying proportions of mining site soil and appeared discolored and dehydrated when taken out of test soil, with characteristic sluggishness, particularly as the proportion of mining soil increased in exposure mixtures. Though metal levels were within permissible limits, morphology of exposed worms were visibly impacted, which corresponds in severity with increasing proportion of mining soil. On the contrary, worms tested in 100% reference soil appeared healthy and active in upper part of exposure vessels. These results suggest that the tested mining soil had adverse impacts on mobility, morphology, behavior and survival of exposed organisms when compared with the control population. Therefore, food products grown downstream of the mining site may be at risk of heavy metal contamination with consequences on food quality, water quality and food chain.

scholarly journals ANALISIS KANDUNGAN LOGAM BERAT Pb DAN Cd DI MUARA SUNGAI MANGGAR BALIKPAPAN

2018 ◽  
Vol 12 (2) ◽  
pp. 117
Author(s):  
Godfrida Any Yusriana Dewi ◽  
Steven A Samson ◽  
Usman Usman
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Waste Disposal ◽  
Metal Contamination ◽  
Metal Content ◽  
Heavy Metal Contamination ◽  
Aquatic Organisms ◽  
The Body ◽  
Metal Bioaccumulation ◽  
Heavy Metal Bioaccumulation

Human activities around the estuary of the Manggar river in Balikpapan produce waste disposal and cause heavy metal contamination such as lead (Pb) and cadmium (Cd) in water bodies. The contaminant can endanger the life of aquatic organisms. It can also occurs heavy metal bioaccumulation in the body of the aquatic organisms. The results show that the heavy metal content of Pb and Cd in water, sediment and water biota indicated that the estuary of the Manggar River was contaminated by heavy metals. The content of Pb and Cd in water is 0.276 mg/l and 0.020 mg/l, in sediments is 24.7 mg/kg and 4.52 mg/kg, and in the biota is 4.20 mg/kg and 0.80 mg/kg. This means that fish and shells taken from the waters around the estuary of the Manggar River are not safe for consumption because they can interfere the human health.

DETERMINAÇÃO DO TEOR DE METAIS PESADOS EM ALFACES CULTIVADAS NAS HORTAS URBANAS NA CIDADE DE COXIM-MS

2018 ◽  
Vol 2 (2) ◽  
pp. 25-34
Author(s):  
Taniel Ferreira da Cruz ◽  
Geilson Rodrigues da Silva ◽  
Hygor Rodrigues de Oliveira ◽  
Lucas Pereira Gandra
Keyword(s):  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Absorption Spectrometry ◽  
Urban Gardens ◽  
Asian Continent ◽  
Agricultural Pesticides ◽  
Three Samples ◽  
Food Legislation ◽  
The City

RESUMOA alface trata-se de uma hortaliça inicialmente cultivada no continente asiático, e encontra-se já disseminada por todas as regiões do Brasil. Entretanto uma das problemáticas relacionada ao consumo desta hortaliça é o uso de defensivos agrícolas durante seu cultivo, podendo provocar a contaminação por metais pesados. Sendo assim, o presente trabalho teve como objetivo realizar a análise dos teores dos metais Cu, Fe, Ni, Cd, Pb e Co em alfaces cultivadas em hortas urbanas na região de Coxim-MS. Para isso, utilizou-se a técnica de espectrometria de absorção atômica em chama e compararam-se os resultados com os valores máximos estipulados pelas legislações para alimentos. Coletaram-se três amostras do tipo alface americana em culturas convencionais. Para a preparação das amostras, utilizou-se digestor de microondas, e posteriormente preparou-se padrões de calibração para leitura no espectrofotômetro. Verificou-se que os elementos cobre e níquel estão abaixo dos valores máximos permitidos pela legislação de alimentos. Já em relação ao ferro e o cobalto não há normativas específicas para esses metais em hortaliças, sendo que o cobalto está abaixo do limite de detecção, assim como, o chumbo. Por sua vez o cádmio apresentou em um dos pontos, intervalo estatístico acima do valor máximo permitido. Sendo assim evidenciou-se a ausência de contaminação por metais pesados nas hortas urbanas que abastecem dos consumidores da cidade. PALAVRAS CHAVE: Análise de Alimentos; Legislações para alimentos; Espectrofotometria de Absorção Atômica em Chama. DETERMINATION OF THE HEAVY METAL CONTENT IN LETTUCE GROWN IN URBAN GARDENS IN THE CITY OF COXIM-MSABSTRACTLettuce is a vegetable originally grown on the Asian continent, and is already disseminated by all regions of Brazil. However one of the problems related to the consumption of this vegetable is the use of agricultural pesticides during its cultivation, and can cause the contamination by heavy metals. Thus, the present work was intended to carry out the analysis of the levels of Cu metals, Fe, Ni, Cd, Pb and Co in lettuce cultivated in urban gardens in the cushion-MS region. For this, the technique of atomic absorption spectrometry was used in flame and compared the Results with the maximum values stipulated by the food legislation. Three samples of the American lettuce type were collected in conventional cultures. For the preparation of the samples, a microwave digester was used, and subsequently the calibration patterns were prepared for reading in the spectrophotometer. It was found that the copper and nickel elements are below the maximum permitted values by food legislation. In relation to iron and cobalt there are no specific norms for these metals in greenery, and the cobalt is below the detection limit, as well as lead. In turn cadmium presented in one of the points, statistical interval above the maximum permitted value. Thus, the absence of heavy metal contamination was demonstrated in the urban gardens that supply the city's consumers.KEYWORDS: Food analysis;  Food legislation; Flame Atomic Absortion Spectrometry.

scholarly journals ANALYSIS OF HEAVY METAL CONTENT IN Anandara granosa (Linnaeus, 1758): A CASE STUDY OF 10 MARKETS IN SEMARANG, CENTRAL JAVA, INDONESIA

2016 ◽  
Vol 78 (4-2) ◽  
Author(s):  
Nanik Heru Suprapti ◽  
Aziz Nur Bambang ◽  
Fronthea Swastawati ◽  
Ahmad Ni’matullah Al Baari ◽  
Adriyan Pramono
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Tea Leaves ◽  
Citrus Aurantifolia ◽  
Central Java ◽  
Micronutrient Status ◽  
Significant Difference ◽  
Blood Cockle ◽  
Anadara Granosa

The purpose of this study was to evaluate Pb, Cr, and Cd levels inside the Anadara granosa and to investigate the effect of submersion using Citrus aurantifolia (lime) and Orthosiphon aristatus (kidney tea leaves) solution on Pb, Cr, and Cd levels contained in the blood cockles taken from 10 markets in the city of Semarang, Central Java, Indonesia (Johar, Genuk, Gayamsari, Jati, Peterongan, Karangayu, Mangkang, Pedurungan, Boom Lama, and Ngaliyan). The concentration of heavy metals of Anadara granosa was analyzed using Atomic Absorption Spectrometer (AAS). Analysis of variance (ANOVA) showed that heavy metals (Pb, Cd, and Cr) of blood cockle taken from 10 markets provided no significant difference (P < 0.05) on the content of Pb, Cd and Cr. Purification was carried out using Citrus aurantifolia (lime) and Orthosiphon aristatus (kidney tea leaves) solution. The lowest Pb (0.00 mg kg–1) was obtained from Boom Lama and Peterongan market with purification using kidney tea leaves solution, while the lowest Cr [(0.30 ± 0.00) mg kg–1]) was obtained from Genuk market with lime solution. In addition, the lowest Cd (0.00 mg kg–1) was obtained from Boom Lama market with purification using kidney tea leaves solution. Accumulation of heavy metal contamination in blood cockle could affect the micronutrient status and consumer health.

scholarly journals Chromium, Cadmium, Lead, and Arsenic Concentrations in Water, Vegetables, and Seafood Consumed in a Coastal Area in Northern Vietnam

2020 ◽  
Vol 14 ◽  
pp. 117863022092141
Author(s):  
Nguyen Thi Minh Ngoc ◽  
Nguyen Van Chuyen ◽  
Nguyen Thi Thu Thao ◽  
Nguyen Quang Duc ◽  
Nguyen Thi Thu Trang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Coastal Area ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Local Population ◽  
Absorption Spectrometry ◽  
Leafy Vegetables ◽  
World Health ◽  
Sample Collection

Background: Heavy metal contamination and related risks for the environment and human health are matters of increasing concern. Methods: The levels of 4 heavy metals (Cr, Cd, Pb, and As) were evaluated in 2 water types (surface and well), 4 types of seafood (tiger shrimp, stuffed snail, snake-head fish, and catfish), and 27 types of vegetables (12 leafy vegetables, 4 pea plants, 4 tuber vegetables, and 7 herbs) that are commonly consumed in northern coastal communes located in Vietnam. Atomic absorption spectrometry was employed for quantification. Results: The mean concentrations of heavy metals detected in water, seafood, and vegetable samples exceeded the national permitted standards and World Health Organization (WHO) recommendation values by at least 2-fold, 2.5-fold, and 5-fold for surface water, vegetables, and well water, respectively. The concentrations of all 4 heavy metals detected in seafood samples were higher than the standards. The levels of heavy metals decreased with increasing distance between the sample collection point and the pollution source. Conclusions: This is the first report of heavy metal contamination of common sources of food and water in the northern coastal area of Vietnam. Significantly, the concentrations of heavy metals detected in study samples exceeded the regulatory limits. These results underscore the importance of continued monitoring and the development of intervention measures to ensure that the quality of food and water meets established standards and protects the health of the local population.

scholarly journals Analysis of lead, arsenic, and cadmium concentrations in instant noodles within the Canadian market

2020 ◽  
Author(s):  
Disha Katyal ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Dale Chen ◽  
Hsin Kuo
Keyword(s):  
Heavy Metal ◽  
Low Power ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
The Body ◽  
Health Conditions ◽  
Icp Ms ◽  
Significant Difference ◽  
Canadian Market ◽  
Instant Noodles

Background: High levels of lead (Pb), arsenic (As), and cadmium (Cd) in instant noodles have been reported in many countries, leading to temporary bans of several popular brands across the globe. There have been no studies analyzing the heavy metal contamination of instant noodles available in Canada to assess the risk for Canadians. As these contaminants are ubiquitous, their presence in food products is inevitable. A diet high in Pb, As, and Cd can cause permanent health conditions and death, as these metals are highly toxic even in small amounts and cannot be metabolized by the body. Methods: 30 packets of instant noodles were purchased from 6 different brands available in Walmart and T&T. Individual packs of noodles, and the accompanying dry seasoning packs, were ground using a blender and stored in sterile Ziplock bags. The samples were processed using an acid digest and then analyzed using ICP-MS/MS. Concentrations of lead, arsenic, and cadmium were measured for a comparison with FDA recommended levels, a cross comparison between wheat and rice noodles, and across all 6 brands. Results: The results show that the levels of Pb, As, and Cd found in instant noodles do not exceed the maximum allowable limits set forth by the FDA and EFSA. A significant difference between rice and wheat noodles is noted for As and Pb concentrations, where rice > wheat (p<0.05). A significant difference between brands is also noted for all three metals (p<0.05). Conclusion: Although the results did not find Pb, As, and Cd concentrations to exceed the recommended levels, the results of this study are inconclusive due to the low power of the analyses. It has been established that rice noodles contain overall higher levels of Pb and As than their wheat counterparts, and the levels vary significantly between different brands. The results indicate a wide window of variability of exposure for Canadians and the low power of the study indicates a larger need for further studies to confirm the findings.

scholarly journals The Amount of Selected Heavy Metals in Water, Sediments and Fish Species from the Rupsha River, Khulna, Bangladesh

2020 ◽  
pp. 1-9
Author(s):  
Md. Matiar Rahman ◽  
Md. Mahedi Hassan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Fish Species ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Sediment Quality ◽  
Aquatic Organisms ◽  
Maximum Level ◽  
Contamination Level ◽  
Aquatic Life

The present study was conducted to figure out the heavy metals (Cd, Co, Cu, Fe, Hg, Mn, Mo, Ni, Pb and Zn) concentrations in water, sediments and fish species from the Rupsha River, Khulna, Bangladesh to spot the heavy metal contamination level. Heavy metals are dangerous because they're non-biodegradable and having an extended half-life period. The heavy metal contamination could also be an excellent concern, especially for aquatic life. The metal concentration within the water sample from the Rupsha River was significantly above the rule values of WHO and USEPA respectively. Moreover, the concentration of metal within the sediments was also greater than the respective probable effect concentrations of the sediment quality guidelines. Furthermore, consistent with the fish standards, these studied fish species weren't found to be contaminated by heavy metals. It’s concluded that each of the heavy metals from the whole sample didn't exceed the standard maximum level. This study demonstrated that water of Rupsha River isn't safe for aquatic organisms also like humans in terms of Pb, Cd and Cr contents as accumulated through consumption.

scholarly journals Heavy metal migration along a rural highway route: Ilesha-Akure roadside oil, Southwestern, Nigeria

2016 ◽  
Vol 18 (4) ◽  
pp. 742-760 ◽  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Clay Fraction ◽  
Soil Samples ◽  
Southwestern Nigeria ◽  
Road Verge ◽  
The Road ◽  
Significant Difference ◽  
Mean Concentration

<div> <p>This paper present migration of some selected heavy metal (zinc, lead, copper, chromium and nickel) of roadside soil samples from along Ilesa-Akure highway with a view to assess the degree of contamination such soils contain and the likelihood that this contamination can be remobilized. Soil samples were collected from 5 locations (Ilesa, Ipetu-ijesa, JABU, Ilara-mokin and FUTA north gate) at depths of 0-5, 15-20, 35-40 and 55-60cm and analysed for the five selected heavy metals in the bulk sample and clay fraction. Their concentrations and distributions in four different road verge zones (5m, 30m, 60m and 110m) were determined. The 5m zone had the highest mean concentration of the five metals whereas the 110m zone exhibited the lowest mean concentration. Zinc and lead exhibited a significant decrease in the roadside soils with the increasing distance from the road while chromium and nickel showed significant increase, copper on the other hand showed no significant difference. Quantitative assessment of the heavy metal contamination using the I<sub>geo </sub>and <em>PI</em> indexes showed that the selected heavy metals were in the order of Cu &lt; Pb &lt; Zn &lt; Ni &lt;Cr for both Indexes. Soil characteristics (which include pH, Cation exchange capacity {CEC}, organic matter and other basic geotechnical tests) responsible for the mobility and vertical distributions of these heavy metals from the road side soil were also assessed.</p> </div> <p>&nbsp;</p>

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