污灌玉米中10种元素的测定及营养评价

发布时间：2018-03-22 09:26

本文选题：电感耦合等离子体质谱法(ICP-MS)　切入点：污染灌溉　出处：《现代预防医学》2015年11期 　论文类型：期刊论文

【摘要】：目的研究污染灌溉区玉米中10种元素铬(Cr)、镍(Ni)、铜(Cu)、锌(Zn)、硒(As)、砷(Se)、钼(Mo)、镉(Cd)、汞(Hg)、铅(Pb)含量的变化,并对其进行营养评价。方法采自对照区和A、B两处污染区的玉米籽粒,经前处理之后,采用微波消解-电感耦合等离子体质谱法(ICP-MS)测定其中的10种元素含量并计算必需元素的INQ值。结果污灌A区的玉米中Cr、Zn、Mo、Cd、Hg、Pb含量高于对照区(P0.05),污灌B区的玉米中Zn、Mo、Cd、Hg、Pb含量高于对照区(P0.05);两处污灌区重金属Cd、Hg、Pb含量均超国标最高限值;对照区玉米中As、Se的INQ1,污灌B区玉米中As的INQ1,其余INQ1。结论污水灌溉导致玉米中一些元素含量改变,有毒重金属Cd、Hg、Pb含量超标;对照区玉米As、Se含量偏低,不能满足人体需求。
[Abstract]:Objective to study the changes of the contents of 10 elements in maize in polluted irrigation area, such as Cr, Ni, Cu, Cu, Zn, se, as, as, Mo, CD, HgN, Pb, and to evaluate their nutrition. Methods Maize seeds were collected from control area and Agna B contaminated area. After pretreatment, The contents of 10 elements were determined by ICP-MS and the INQ values of essential elements were calculated. The results showed that the content of CrZnMoMoCdCdCdGG Pb in maize in sewage irrigated area A was higher than that in control area P0.05, and the content of HgPb in maize in sewage irrigation area B was higher than that in control area (P 0.05), and the content of HgPb in maize in sewage irrigated area A was higher than that in control area (P 0.05). The content of heavy metal CD ~ (2 +) H _ (GG) Pb in two sewage irrigation areas exceeded the maximum limit of national standard. INQ1 in maize of control area, INQ1 of as in maize in sewage irrigation area, and other INQ1.Conclusion the content of some elements in maize changed by sewage irrigation, and the content of toxic heavy metal CDGG Pb exceeded the standard, and the content of AsSe in maize of control area was too low to meet the human demand.
【作者单位】：河北联合大学公共卫生学院河北省煤矿安全与卫生实验室;唐山市为民职业环境检测有限公司;
【基金】：河北省教育厅科学研究计划项目(2011316) 河北省医学科学研究重点课题计划(20100129)
【分类号】：R155.5

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