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秦巴山区生态环境对当地居民毛发中微量元素的影响

高云芳;张小燕;张富昌   

  1. 西北大学生命科学学院化学工程学院应用心理研究所, 西安 710069
  • 收稿日期:2003-07-23 修回日期:2004-04-19 出版日期:2005-02-18

Effects of ecological environment in Qinba Mountains on hair trace element contents of local inhabitants

GAO Yunfang,ZHANG Xiaoyan,ZHANG Fuchang   

  1. Northwest University,Xi'an 710069 China
  • Received:2003-07-23 Revised:2004-04-19 Online:2005-02-18

摘要: 测定了秦巴山区136例健康儿童及22例成人毛发中Zn、Fe、Ca、Cu、Mg、Al、Se、Mn、Pb、Cr共10种微量元素的含量,结果表明,在所测10种元素中,除Mg外,其余9种元素均有不同程度的缺乏或超标,其中Al、Mn与Cr含量严重超标,其均值分别是正常含量上限的2.04、1.67及2.07倍,超标人数比例分别高达83.54%、77.85%和72.78%;Zn和Se含量均值则比正常含量下限低,仅为正常含量下限的91.96%和68.33%,缺乏人数比例分别为69.62%和79.11%.结合当地的生态环境与地球化学背景,对微量元素缺乏或超量的原因及危害进行了分析.

关键词: 土壤有机质动态, 土壤有机质模型, 扩散作用, 平移作用, 陆地生态系统

Abstract: Determinations of Zn,Fe,Ca,Cu,Mg,Al,Se,Mn,Cr and Pb contents in the hairs of 136 children aged 0~13 and of 22 adults in the Qinba Mountains showed that the contents of test trace elements except Mg were abnormal in different degrees.The Al,Mn and Cr contents were highly excessive,their mean values being 2.04,1.67 and 2.07 times as the highest value of normal range,and the people excessive in three elements occupied 83.54%,77.85% and 72.78%,respectively.On the other hand,Zn and Se contents were in shortage,with the mean values being only 91.96%and 68.33% of the lowest value of normal range,and the people deficient in Zn and Se occupied 69.62% and 79.11%,respectively.Based on the local environmental geochemistry,this paper analyzed the possible causes of this abnormal status in trace elements and its harm.

Key words: SOM dynamics, SOM model, Diffusion motion, Translation motion, Terrestrial ecosystem