Heavy metal contamination in soils and vegetables near an e-waste processing site, south China

Luo, Chunling; Liu, Chuanping; Wang, Yan; Liu, Xiang; Li, Fangbai; Zhang, Gan; Li, Xiangdong

doi:10.1016/j.jhazmat.2010.11.024

Cited by 614 publications

(251 citation statements)

References 38 publications

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“…Hence, it is essential to monitor the suitability of water for these activities. Understanding the concerns due to presence of heavy metals, many studies have been carried out in groundwater (Isa et al 2014;Li et al 2015;Ashraf et al 2015), surface water (Varol and Ş en 2012;Thuong et al 2013), soil (Zhao et al 2012;Li et al 2014), sediments (Varol 2011;Chabukdhara and Nema 2012) and plants and vegetables (Sharma et al 2007;Luo et al 2011;Yousaf et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Human exposure risk to heavy metals through groundwater used for drinking in an intensively irrigated river delta

et al. 2016

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Drinking water containing heavy metals above the maximum permissible limits cause potential risk to human health. The aim of this study was to determine the groundwater suitability for drinking use based on heavy metal concentration and the associated human exposure risk in an intensively irrigated part of the Cauvery river basin, Tamil Nadu, India. Sixteen heavy metals analysed were in the order of dominance of chromiumChromium and zinc were within permissible limits of the Bureau of Indian Standards for drinking water quality, and silver, lead and nickel were above limits in all the groundwater samples. In less than 50 % of the groundwater samples, aluminium, boron, cadmium, copper, iron and manganese exceeded their individual permissible limits. Heavy metal pollution index based on 11 heavy metals indicated that groundwater quality of this area is poor-to-unsuitable. Non-carcinogenic risk for humans due to ingestion of groundwater through drinking water pathway was very high for infants, children and adults. Silver, lead, nickel, cadmium and manganese largely contributed to the health hazard. Sources of heavy metals were identified to be geological and from human activities, i.e., application of fertilizers in agricultural fields, seawater intrusion due to intensive pumping for agriculture and wastewater from industries. Groundwater and surface water in this area pose large threat due to high levels of heavy metals, and it is necessary to avoid this water for drinking due to potential risk of health hazard. This study also demonstrated the application of HPI and human exposure hazard index to study the groundwater quality based on heavy metals' concentration.

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Section: Introductionmentioning

confidence: 99%

Human exposure risk to heavy metals through groundwater used for drinking in an intensively irrigated river delta

et al. 2016

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“…Unregulated e-waste recycling has resulted in the release of large quantities of PBDEs and other toxic chemicals into the environment, particularly in locations such as Qingyuan and Guiyu of South China Luo et al, 2011). So far, most of the previous research on chemicals released from e-waste has focused on measuring the concentration in topsoil, sediment, air (Ma et al, 2009;Wang et al, 2011a), as well as quantifying human exposure (Bi et al, 2007;Yuan et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

The influence of land use on the concentration and vertical distribution of PBDEs in soils of an e-waste recycling region of South China

Cheng

Wang

et al. 2014

Environmental Pollution

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“…In southeast China, e-waste processing sites are usually located in fields adjacent to land used for agricultural purposes (Tang et al, 2010;Luo et al, 2011). The informal recycling process may cause serious agricultural soil contamination with HMs in the vicinity of e-waste processing sites (Wong et al, 2007;Shen et al, 2008;Zhang and Min, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…There is a large body of literature on HM contamination in soils in the vicinity of e-waste processing site (e.g., Ha et al, 2009;Tang et al, 2010;Luo et al, 2011). However, few studies have been conducted on the threat of Cd in topsoils to shallow groundwater in the vicinity of e-waste processing sites.…”

Section: Introductionmentioning

confidence: 99%

Spatial characteristics of cadmium in topsoils in a typical e-waste recycling area in southeast China and its potential threat to shallow groundwater

Luo

Deng

et al. 2014

Science of The Total Environment

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• We characterize the Cd total in topsoils, pH and SOM in a typical e-waste recycling area.• The relationships between Cd total in topsoils, pH, and SOM were studied.• Impact of topsoil Cd accumulation and acidification on shallow groundwater quality was evaluated. Informal electrical and electronic waste (e-waste) recycling often creates secondary sources of cadmium (Cd) pollution. To characterize the total Cd concentration (Cd total ) in topsoil and evaluate the threat of Cd in topsoils to shallow groundwater, 187 topsoil samples and 12 shallow groundwater samples were collected in a typical e-waste recycling area in southeast China. Soil organic matter content, soil pH and Cd total in topsoil, pH and dissolved Cd concentration in shallow groundwater were measured. Cd total in the topsoils showed an inverse distribution trend with soil pH in that high Cd concentrations (and low pH values) were found in the surrounding area of the metal recycling industrial park where there were many family-operated e-waste recycling facilities before the industrial park was established and with low concentrations (and high pH values) in other areas, and they had similar spatial correlation structures. Cd accumulation and acidification were synchronous in topsoils, and soil pH was significantly correlated with Cd total in topsoils with low to moderate negative correlation coefficient (r = −0.24), indicating that both of them maybe correlated with informal recycling. The shallow groundwater in the surrounding area of the metal recycling industrial park was seriously contaminated by Cd, and topsoil Cd accumulation and acidification in the surrounding area of e-waste recycling sites significantly increase the risk of shallow groundwater contaminated by Cd. Action is urgently required to control Cd accumulation and acidification by improving the recycling operations of e-wastes in order to reduce the risk of Cd leaching from topsoils and shallow groundwater contamination. a b s t r a c t a r t i c l e i n f o

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Heavy metal contamination in soils and vegetables near an e-waste processing site, south China

Cited by 614 publications

References 38 publications

Human exposure risk to heavy metals through groundwater used for drinking in an intensively irrigated river delta

Human exposure risk to heavy metals through groundwater used for drinking in an intensively irrigated river delta

The influence of land use on the concentration and vertical distribution of PBDEs in soils of an e-waste recycling region of South China

Spatial characteristics of cadmium in topsoils in a typical e-waste recycling area in southeast China and its potential threat to shallow groundwater

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