首页 | 本学科首页   官方微博 | 高级检索  
     检索      

黄河下游开封段引黄灌区小麦中重金属污染特征及健康风险评价
引用本文:康国华,张鹏岩,李颜颜,杨丹,庞博,何坚坚,闫宇航.黄河下游开封段引黄灌区小麦中重金属污染特征及健康风险评价[J].环境科学,2018,39(8):3917-3926.
作者姓名:康国华  张鹏岩  李颜颜  杨丹  庞博  何坚坚  闫宇航
作者单位:河南大学环境与规划学院
基金项目:国家自然科学基金项目(41601175);河南省基础与前沿技术研究计划项目(152300410067);河南省高校科技创新团队支持计划项目(16IRTSTHN012)
摘    要:为探究引黄灌区小麦对人体健康的影响,以黄河下游引黄灌区开封段为研究区,对其中水稻乡、柳园口乡、西郊乡和北郊乡的小麦进行采样调查,采用内梅罗综合指数法、健康风险评价模型对研究区小麦重金属污染状况及其对成人和儿童的健康风险进行评价.结果表明,研究区小麦籽粒中Cd、Cr、Pb、Cu、Zn、Ni、Hg平均含量分别为0.034、0.428、0.279、5.363、29.605、0.305和0.003 mg·kg~(-1).除Pb和Zn外,其他重金属均未超出国家食品卫生标准限制值.研究区小麦籽粒中Pb和Zn的污染指数大于1,Cd、Cr、Cu、Ni和Hg的污染指数均小于1,小麦综合污染指数为1.9851,各乡区小麦的综合污染指数介于1.116~1.847之间.非致癌重金属(Pb、Cu、Zn、Hg)对成人和儿童的健康风险指数分别为1.055 8和0.545 0;致癌重金属(Cd、Cr、Ni)对成人和儿童的健康风险指数均值均高于USEPA推荐的最大可接受风险水平1×10-4,可能存在引发癌症的风险.

关 键 词:小麦  重金属  污染特征  健康风险  引黄灌区
收稿时间:2017/9/21 0:00:00
修稿时间:2018/2/26 0:00:00

Pollution Characteristics and Health Risk Assessment of Heavy Metals in Wheat Grains Cultivated in Kaifeng Irrigation Area of the Yellow River
KANG Guo-hu,ZHANG Peng-yan,LI Yan-yan,YANG Dan,PANG Bo,HE Jian-jian and YAN Yu-hang.Pollution Characteristics and Health Risk Assessment of Heavy Metals in Wheat Grains Cultivated in Kaifeng Irrigation Area of the Yellow River[J].Chinese Journal of Environmental Science,2018,39(8):3917-3926.
Authors:KANG Guo-hu  ZHANG Peng-yan  LI Yan-yan  YANG Dan  PANG Bo  HE Jian-jian and YAN Yu-hang
Institution:College of Environment and Planning, Henan University, Kaifeng 475004, China,College of Environment and Planning, Henan University, Kaifeng 475004, China,College of Environment and Planning, Henan University, Kaifeng 475004, China,College of Environment and Planning, Henan University, Kaifeng 475004, China,College of Environment and Planning, Henan University, Kaifeng 475004, China,College of Environment and Planning, Henan University, Kaifeng 475004, China and College of Environment and Planning, Henan University, Kaifeng 475004, China
Abstract:In order to monitor heavy metal pollution in agricultural soils and assess the corresponding health risk in the Yellow River irrigation area, this study applied the Nemero index and the health risk index to evaluate heavy metal pollution in wheat grains and the health risks for residents in the lower reaches of the Yellow River. Four towns in Kaifeng, which are within the lower reaches of the Yellow River, were selected as the study area. The examination of wheat samples revealed that the average contents of Cd, Cr, Pb, Cu, Zn, Ni, and Hg in the wheat grains were 0.034, 0.428, 0.279, 5.363, 29.605, 0.305, and 0.003 mg·kg-1, respectively. Among the heavy metals, Pb and Zn exceeded the national food hygiene standards. The pollution indices of Pb and Zn in the wheat grains contributed significantly to the comprehensive pollution index, as each was greater than 1 (1.985), although the pollution indices of the other heavy metals were less than 1. The comprehensive pollution index of wheat in each town ranged from 1.116 to 1.847. The health risk indices of non-carcinogenic heavy metals (Pb, Cu, Zn, and Hg) for adults and children were 1.0558 and 0.5450, respectively. The health risk indices of carcinogenic heavy metals (Cd, Cr, and Ni) for adults and children were higher than the maximum acceptable risk level (1×10-4) recommended by the USEPA, which suggests that residents of the study area have a high risk of developing various forms of cancer.
Keywords:wheat  heavy metal  pollution characteristics  health risk  Yellow River irrigation area
本文献已被 CNKI 等数据库收录!
点击此处可从《环境科学》浏览原始摘要信息
点击此处可从《环境科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号