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- Title
Heavy metal contaminations in soil-rice system: source identification in relation to a sulfur-rich coal burning power plant in Northern Guangdong Province, China.
- Authors
Wang, Xiangqin; Zeng, Xiaoduo; Chuanping, Liu; Li, Fangbai; Xu, Xianghua; Lv, Yahui
- Abstract
Heavy metal contents (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) in 99 pairs of soil–rice plant samples were evaluated from the downwind directions of a large thermal power plant in Shaoguan City, Guangdong Province, China. Results indicate that there is a substantial buildup of As, Cd, Cu, Pb, and Zn in the predominant wind direction of the power plant. The significant correlations between S and heavy metals in paddy soil suggest that the power plant represents a source of topsoil heavy metals in Shaoguan City due to sulfur-rich coal burning emissions. Elevated Cd concentrations were also found in rice plant tissues. Average Cd (0.69 mg kg−1) and Pb (0.39 mg kg−1) contents in rice grain had exceeded their maximum permissible limits (both were 0.2 mg kg−1) in foods of China (GB2762-2005). The enrichment of Cd and Pb in rice grain might pose a potential health risk to the local residents.
- Subjects
HEAVY metal content of forest soils; COAL-fired power plants; HEAVY metal content of plants; HEAVY metals &; the environment; HEAVY metal toxicology
- Publication
Environmental Monitoring & Assessment, 2016, Vol 188, Issue 8, pN.PAG
- ISSN
0167-6369
- Publication type
Article
- DOI
10.1007/s10661-016-5468-z