期刊
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
卷 98, 期 -, 页码 303-309出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2013.09.040
关键词
Heavy metal balance; Vegetable production system; Soils; Mass balance model; Hazard quotient
资金
- National Natural Science Foundation of China [41101491, U1202236]
- Special Research Foundation of the Public Natural Resource Management Department from Ministry of Environmental Protection of China [201109018]
- frontier project of the knowledge innovation engineering field of Institute of Soil Science, Chinese Academy of Sciences [ISSASIP1106]
Accumulation and potential health risk of cadmium (Cd), lead (Pb), copper (Cu), and zinc (Zn) in a plot-scale vegetable production pen-urban area near Nanjing city, China was investigated through element balance method, model simulation and dietary risk assessment. The heavy metals accumulated in the surface soils were due to long-term and heavy application of organic fertilizers, among which the accumulation of Cu and Zn were greater than those of Cd and Pb. The result of a mass balance model simulation indicated that intensive vegetable production would result in accumulation of Cd, Pb, Cu and Zn in soils exceeding the target values in 55, 36, 34 and 71 years, respectively. The estimated dietary intakes of Cd, Pb, Cu, and Zn were far below the tolerable limits and the hazard quotient values were below one for both children and adults. Although there is no imminent health risk from heavy metals through vegetable consumption, more attention should be paid to the long-term accumulation and risk, especially for children. (C) 2013 Elsevier Inc. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据