【摘要】 测定了辽源市 1147例中小学生头发中Zn、Fe、Cu、Ca、Mn和Pb的含量 ,讨论了其百分位含量和正常值范围 ,研究了各元素含量在性别、年龄上的差异性和相关性 ,观察、分析了用计算机模式识别技术所得到的不同年龄、性别的样本点的二维聚类、分布图 ,为该地区微量元素科学的研究提供了有价值的信息和数据。更多还原

【Abstract】 The content of Zn,Fe,Cu,Ca,Mn and Pb was deternined in hair of 1147 students from Liaoyuan city of Jilin province.The results were analysed and studied.The correlation and discrepancy among the elements content at different ages and sexes were studied.The two-dimentional cluster and distribution charts of different ages and sexes obtained by computer mode recognition technology were inspected and analysed,which provided a useful data for the trace elements studies in this region.更多还原