您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Heavy metals in paddy soil-rice systems of industrial and township areas from subtropical China: Levels, transfer and health risks

文献类型： 外文期刊

作者： Lu, Anxiang 1 ; Li, Bingru 1 ; Li, Jing 3 ; Chen, Wei 4 ; Xu, Li 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China

2.Beijing Municipal Key Lab Agr Environm Monitoring, Beijing 100097, Peoples R China

3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China

4.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China

5.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China

6.Hong Kong Baptist Univ, State Key Lab Environm & Biol Anal, Hong Kong, Hong Kong, Peoples R China

关键词： Soil contamination; Rice grains; Cadmium; pH; Health risk assessment

期刊名称：JOURNAL OF GEOCHEMICAL EXPLORATION （ 影响因子：3.746； 五年影响因子：4.362 ）

ISSN： 0375-6742

年卷期： 2018 年 194 卷

页码：

收录情况： SCI

摘要： The levels, transfer factors and health risks of selected metals were investigated in paddy soil-rice systems of industrial and township areas from subtropical China. The mean concentrations of cadmium (Cd), lead (Pb), arsenic (As) and mercury (Hg) in paddy soils were 1.08, 52.8, 19.5 and 0.20 mg.kg(-1) (dry weight), respectively. The concentrations of Cd from ca. 99% of the soil samples and 68.9% of the rice grain samples in the study region were above the allowable limits according to the current standards. The concentrations of Cd and Pb in paddy soil from industrial areas were significantly higher than those from township and clean areas, however, these situations did not happen for Cd and Pb concentrations in rice grains. The mean of transfer factors of Cd was 0.742, which was the highest of all selected metals. The soil pH and transfer factors of Cd were analyzed separately in groups of 0.1 pH unit interval. Piecewise means of the log Cd transfer factors kept around -0.10 between soil pH 4.3 and 6.3, whereas linearly decreased by a factor of 1.80 with the increase of soil pH from 6.4 to 7.7. The high hazard index values and cancer risk values were found in our study area, indicating a high non-carcinogenic and carcinogenic health risk from consumption of rice grains.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台