河南省非职业接触人群尿砷参考值

采用分光光度法测定河南省２０６５名非职业接触人群晨尿中砷的含量，结果表明：（１）郑州、洛阳、安阳、信阳、商丘五地区间存在差异但无非常显著性（０．０１＜Ｐ＜０．０２５）。（２）年龄段间及性别间差异无非常显著性（０．０１＜Ｐ＜０．０２５及Ｐ＞０．５）。（３）所测数据呈正偏态分布，中位数为１７．８μｇ／Ｌ，算术均数为２０．７μｇ／Ｌ，标准差为１５．２μｇ／Ｌ，几何均值为１７．３μｇ／Ｌ。（４）建议河南省非职业人群尿砷参考值上限为５６μｇ／Ｌ。

Reference Value of Urinary Arsenic for Nonoccupational Exposed Subjects in Henan

Urinary arsenic levels of 2065 nonoccupational exposed subjects in Henan were determined by spectrophotometric analysis. The results showed: (1) The difference was not significant among Zhengzhou, Luoyang, Anyang, Xinyang and Shangqiu (0.01 < P < 0.025). (2) The difference was not significant among different ages(0.01 < P < 0.025) and between sexes(P > 0.05). (3) The distribution was positive skewness. The median of urinary arsenic was 17.8 micrograms/L. The arithmetic mean was 20.7 micrograms/L. The standard deviation was 15.2 micrograms/L. The geometric mean was 17.3 micrograms/L. (4) It is suggested that the reference upper limit value of urinary arsenic for nonoccupational exposed subjects in Henan in 56 micrograms/L.