Concentration and potential health risk of heavy metals in market vegetables in Chongqing, China

Yang, Qingwei; Xu, Yuan; Shou-jiang, Liu; Jin-feng, HE; Long, Fang-yan

doi:10.1016/j.ecoenv.2011.05.006

Cited by 151 publications

(68 citation statements)

References 18 publications

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“…There was no considerable accumulation of Pb and Cr in Yang et al (2011). Overall, soil amended with 5 t/ha composted litter performed best in terms of fruit production and reduction in HMs uptake.…”

Section: Accumulation Of Heavy Metal In the Plant Partsmentioning

confidence: 85%

Poultry litter management in Lagos and effects of its soil application on the growth of okra (Abelmoschus esculentus)

Ogundiran¹,

Ademola²,

Adejumo³

2015

Afr. J. Plant Sci.

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Poultry litter constitutes one of the animal wastes that are produced in large quantity. Information on the quantity generated may enhance planning for its utilisation. Quantification of poultry litter (PL) generated and its utilisation is rare in Nigeria. This study was designed to investigate PL management in Lagos, Nigeria and possible utilisation potential. Questionnaires were distributed to poultry farmers in Lagos to evaluate poultry waste generation and management practices. Additionally, PL was also quantified from selected farms. Greenhouse experiments were conducted to evaluate the agronomic effects of raw and composted PL (each applied at 0, 5, 10 t/ha and replicated four times) on the growth and heavy metals uptake of Abelmoschus esculentus (okra). Poultry farms were situated in the residential, non-residential and industrial areas with non-residential areas housing a larger percentage. About 53% of the farms were located near rivers or streams. A few of the poultry farmers treated and utilised PL using chemical and physical methods before disposal. Also, no record of waste utilization was found in 72.3% of the farms. About 87.4% of the farmers quantified the PL generated. About 89.3% of the farmers disposed PL in open dumpsites. Mean poultry litter generated from four farms per bird/day was 0.11 ± 0.001 kg. The HMs contents in plants grown on the poultry treated soils were below the permissible levels in soil. The heavy metals concentrations in the leaves and fruits (which are usually the edible parts of okra plants) for all the treatments fall within WHO/FAO permissible levels. Overall, soil amended with 5 t/ha composted poultry litter performed best in terms of fruit production and reduction in HMs uptake. The use of composted poultry litter as fertiliser at calculated quantity will increase PL management.

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Section: Accumulation Of Heavy Metal In the Plant Partsmentioning

confidence: 85%

Poultry litter management in Lagos and effects of its soil application on the growth of okra (Abelmoschus esculentus)

Ogundiran¹,

Ademola²,

Adejumo³

2015

Afr. J. Plant Sci.

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“…Although several researchers reported that the Cd dietary intake for residents in selected areas of different countries such as China, Italy, and Chile was considered safe (Beccaloni et al 2013;Yuan et al 2014;Munoz et al 2005;Liu et al 2010;Hu et al 2013), a number of other studies indicated that potential health risks caused by Cd intake exist for people who consume leafy vegetables and rice on a daily basis. The risks are especially higher for people living in areas where Cd contamination is prevalent because of wastewater irrigation Zwicker et al 2010;Mapanda et al 2007;Yang et al 2011). Cd contamination of rice should be of great concern because rice is the major staple food in China, which is the largest rice producer in the world.…”

Section: Introductionmentioning

confidence: 99%

Cadmium contamination of rice from various polluted areas of China and its potential risks to human health

Shi

Cheng

Zhang

et al. 2015

Environ Monit Assess

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A total of 484 rice samples were collected from five polluted areas in China to investigate the cadmium (Cd) contamination of rice and its potential health risks. The mean Cd contents of analyzed rice samples obtained from different areas ranged from 0.149 to 0.189 mg·kg(-1). Cd concentrations in more than 18% of rice samples exceeded the maximum allowable Cd concentration, and the highest level of 41.1% was observed in samples from Hezhang, Guizhou, which was characterized by serious Cd pollution. Target hazard quotient (THQ) values of 1.5 to 7.8 from rice intake indicated a significant non-carcinogenic health risk for humans, particularly for highly exposed consumers. Children are more at risk than adults, as indicated by the higher THQs. Moreover, carcinogenic risks of Cd from rice intake for average and high consumers in the selected areas were two to three and four to eight greater, respectively, than the threshold value recommended by the International Commission on Radiological Protection.

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“…Rape and potatoes sold by supermarkets, had high concentrations of lead which was above the permissible limit and therefore regarded unsafe for human consumption. Other studies (Guerra et al 2012;Harmanescu et al 2011;Abbas et al 2010;Yang et al 2011) obtained ranges; 470 -1660 µg/Kg, 4.5 -21.8 mg/Kg, 18 -150 µg/Kg and 6 -16 mg/Kg in Brazil, Nigeria, Pakistan and China respectively.…”

Section: Leadmentioning

confidence: 99%

Concentrations of Some Trace Elements in Vegetables Sold at Maun Market, Botswana

Bati¹,

Mogobe²,

Masamba³

2016

JFR

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Contamination of vegetables with toxic metals is one of the most important contributing factors to ill health throughout the world, more so because vegetables are considered essential for human health and their consumption is highly recommended by health authorities. The aim of this study was to determine the concentrations of selected essential elements (Fe, Cu, Mn, Mo, Zn) and toxic elements (As, Cd, Cr, Pb) in common vegetables sold for human consumption in supermarkets and open market of Maun village, Botswana. Five vegetables (cabbage, rape, tomatoes, onions and potatoes) were purchased from different selling points, washed with de-ionised water, cut into small pieces and digested with aqua regia on a block digester, following the US. EPA method 200 -7 and analysed for metal content using Inductively Coupled Plasma -Atomic Emission Spectroscopy (ICP-AES). The results showed that concentrations of essential and toxic metals varied with the type of vegetable and also with the market category (supermarket or street vendor). The highest concentration of essential elements was obtained from cabbage with a Zn concentration of 135.4mg/Kg and the lowest was from onion with a Mo concentration of 1.35mg/Kg. For toxic elements the highest concentration was obtained from rape vegetable with a Pb concentration of 4.73mg/Kg and the lowest from the same vegetable with Cr concentration below the detection limit. Also observed was that leafy vegetables, especially cabbage, had the highest concentrations of most trace metals. It was concluded that vegetables sold in Maun had sufficient levels of essential elements but also some had high concentrations of toxic metals. We thus recommend consumption of vegetables from the studied markets with reduced frequency to avoid metal poisoning.

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Concentration and potential health risk of heavy metals in market vegetables in Chongqing, China

Cited by 151 publications

References 18 publications

Poultry litter management in Lagos and effects of its soil application on the growth of okra (Abelmoschus esculentus)

Poultry litter management in Lagos and effects of its soil application on the growth of okra (Abelmoschus esculentus)

Cadmium contamination of rice from various polluted areas of China and its potential risks to human health

Concentrations of Some Trace Elements in Vegetables Sold at Maun Market, Botswana

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