矿区水稻中Pb、Cu和Zn污染现状及健康风险评价

矿区水稻中Pb、Cu和Zn污染现状及健康风险评价(6300字)
摘  要：为了更好地了解和评价湖南大米中Pb、Zn和Cu含量极其对人体的健康影响，在对湖南矿区和冶炼区水稻土壤重金属污染调查的基础上，分别以湖南各地市场大米和污染区当地生产的稻谷样品为例，对其进行重金属含量分析及对人体的健康风险评价。结果表明，污染区的水稻样品中Pb、Zn和Cu的平均含量分别是1.03、1.44和1.46 mg•kg¬¬¬¬¬¬¬¬¬¬-1。污染区水稻中Pb、Zn和Cu含量分布均为根部最高，谷粒最低。
关键词：水稻 重金属 健康风险评价

HEALTH RISK ASSESSMENT OF HEAVY METALS IN RICE
Abstract: In order to better understand and evaluation of Pb, Zn hunan rice and Cu content extremely on human health effects, in the mining and smelting area of hunan rice soil heavy metal pollution on the base of investigation, respectively to hunan market all over rice and pollution area of samples to the local production of rice as an example, the heavy metal content analysis and on to the health of human body risk assessment. The results show that the pollution in the sample rice Pb, Zn and Cu average content were 1.03, 1.44 and 1.46 mg • kg-1. Pollution area of Pb, Zn and rice Cu content distribution are the highest, grain minimum.
Keywords:Rice  heavy metal  health risk assessment

目  录
摘  要    1
关键词    1
1    前言    2
1.1 重金属对水稻的影响    2
1.2 常见的健康风险评估方法    3
2 研究目的和内容    3
2.1 研究目的    3
2.2 研究的内容    3
3 材料和方法    3
3.1 样品采集及准备    3
3.2 主要试剂    3
3.3 主要仪器设备    3
3.4 实验方法    4
3.5样品中重金属含量测定    4
3.6 评价标准    4
3.7健康风险评价模型    4
4. 结果与讨论    5
4.1实验结果    5
4.2糙米和谷壳饲料风险评价    7
4.3健康风险评价    7
4.4讨论    8
5. 结论    9
参考文献    9
致  谢    10