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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。
The contents of arsenic in morning urine of 2065 non-occupational exposure groups in Henan Province were determined by spectrophotometry. The results showed that: (1) there were significant differences between the five areas of Zhengzhou, Luoyang, Anyang, Xinyang and Shangqiu (0.01 < P <0.025). (2) There was no significant difference between the age groups and between sexes (0.01
0.5). (3) The measured data showed a positive skewed distribution with a median of 17.8 μg / L, an arithmetic mean of 20.7 μg / L, a standard deviation of 15.2 μg / L, and a geometric mean of 17.3 μg / L. (4) It is suggested that the upper limit of urinary arsenic reference value for non-occupational population in Henan Province is 56μg / L.