有色金属矿区非职业接触人群尿砷含量分析

Urinary arensic among non-occupationally exposed subjects in non-ferrous metal mineralized area

目的了解贵州省赫章县长期矿山开采重金属污染地区人群尿砷含量特征。方法在开采污染最严重的妈姑镇和无矿山开采的撒拉溪镇随机选取>45岁村民作为研究对象,采集村民的尿液进行砷含量检测。结果妈姑镇男女尿砷均值分别为46.97和56.30μg/gCr,撒拉溪镇男女尿砷均值分别为36.55和45.83μg/gCr,妈姑镇人群尿砷含量高于撒拉溪镇,女性尿砷含量高于男性。妈姑镇非职业人群尿砷95%上限男女分别为99.40和141.92μg/gCr,撒拉溪镇非职业人群尿砷95%上限男女分别为65.70μg/gCr和78.06μg/gCr。结论调查地区95%村民尿砷<100μg/gCr,无慢性砷中毒。

Objective To investigate urinary arensic content in non-occupationally exposed adults in heavy metal contaminated area due to mining in Hezhang county, Guizhou province. Methods The subjects older than 45 years were randomly recruited from the mineralized area（ Magu village） and unmineralized area（ Salaxi village）. Urine samples of the villagers were collected and arensic content in the urine was detected. Results The urinary arensic contents for male and female in Magu village were 46. 97μg/gCr and 56. 30 μg/gCr and those for male and female in Salaxi village were 36. 55 μg/gCr and 45.83μg/gCr, respectively. The average urinary arensic content of Magu villagers was higner than that of Salaxi villagers. The arensic content in urine for the females was higner than that of the males. Condusion There were no villagers suffer from chronic arensic poisoning in the two areas. The 95% upper limit of urinary arensic content for non-occupational adults in Magu village were 99.40 μg/gCr and 141.92 μg/gCr, and that in Salaxi village were 65.70 μg/gCr and 78.06 μg/gCr, respectively.