香泉铊矿化区人体的铊含量特征及环境学意义

Thallium content in human bodies in the Xiangquan thallium mineralized district and its environmental significance

香泉铊矿床是安徽省近年来发现和正在勘探的大型铊矿床,为了研究自然状态下的铊矿床对人体及周围环境的影响,分别采集矿床附近和远离矿床的小山井村和大尹村村民(背景区)的尿液和头发,并对其中的铊含量进行测试。结果表明,小山井村村民的尿铊平均质量浓度为1.76μg/L,明显高于健康人群和背景区村民,而头发中铊平均质量比为3.13μg/kg,属于健康人群发铊质量比范围。研究表明,目前矿床中的铊尚未大量迁移进入环境而对村民健康产生明显的危害,但矿床附近村民已表现出铊污染的征兆;此外,本次研究也表明人发中铊含量高低不是铊污染的特征标志。

In order to study the influence of thallium deposit on local people,urine and hair of villagers in the Xiangquan thallium mineralized district are collected and detected. Results show that the average thallium content in urine of Xiaoshanjing villagers is 1.76 μg/L, which is higher than that of the healthy people and the ordinary villagers in the nonmineralized district, and that the average thallium content in hair of Xiaoshanjing villagers is 3. 13 μg/kg, which is similar to that of most healthy people. It is concluded that thallium in ores in the Xiangquan thallium mineralized district has not gone into the environment in a large amount, that the amount of thallium in the Xiaoshanjing villagers＇ bodies through food chains is still in the normal range, but some sigfi of thallium pollution has appeared in the villagers near the deposit. This study also indicates that the thallium content in human hair is not the characteristic sign of thallium pollution.