贵州省赫章县45岁以上成人尿铊含量调查

Thallium content in adults older than 45 ages at Hezhang County of Guizhou Province

目的针对贵州赫章县多年矿山开采重金属污染地区开展人体铊含量特征调查。方法在开采污染最严重的妈姑镇和未曾有过开采的撒拉溪镇随机选取45岁以上村民作为研究对象,采集村民的尿液进行铊含量检测。结果妈姑镇人群尿铊含量高于撒拉溪镇,女性尿铊含量高于男性,两地区人群尿铊多数在正常人尿铊的生物接触上限值内。结论调查地区村民没有慢性铊接触中毒,妈姑镇45岁以上女性非职业人群尿铊95%上限为8μg/gCr,其余45岁以上非职业人群尿铊95%上限为5μg/gCr。

Objective To investigate the feature of Thallium content in adults of heavy metal contaminated district due to mining of Hezhang County,Guizhou Province.Methods The subjects older than 45 ages were randomly recruited from the mineralized district（Magu village） and no-mineralized district（Salaxi village）,urine of villagers were collected and thallium content in urine were detected with ICP-MS.Results The average thallium contents in urine of Magu villagers were higner than those of Salaxi villagers,The urinary thallium contents of female were higner than those of male.The urinary thallium contents of residents in two districts were mostly under the upper limit of exposure in human bodies.Conclusion There was no villager suffered from chronic poisoning of thallium in the two observing districts,the 95% upper limits of urinary thallium content for nonoccupational women older than 45 ages in Magu village was 8μg/gCr and those for other nonoccupational subjects older than 45 ages was 5μg/gCr.