辽河流域人发中重金属元素分布特征

Distribution Characteristics of Heavy Metal Elements in Human Hair from Liaohe Drainage Area

对辽河流域人发中重金属元素含量分布、分配规律研究结果表明:重金属元素尤其是铅、镉、汞、砷、铬元素,分布规律有很大相同之处,高含量数据点均围绕沈阳、锦州等重工业城市及阜新、柴河铅矿及其下游等地区分布,且城市居民平均含量明显高于乡村居民平均水平。通过进一步对典型污染区的研究发现:人发分布特征与背景环境有很大相关性,即土壤、浅层地下水、作物中重金属含量高的地区,人发中重金属含量亦较高。

Results from the research on the distribution of heavy metal elements in human hair samples Liaohe Drainage Area indicate that the distribution rule of the heavy metal elements, especially for Pb, Cd, As and Cr, is uniform. The higher from Hg, content data points distribute all around heavy industrial cities and areas such as Shenyang, Jinzhou, Fuxin and Chaihe lead mine. Another distribution characteristics is that the average con- tent of heavy metal elements in human hair samples from urban residents are much higher than those from rural residents. Further research on typical polluted areas indicates that distribution characteristics of heavy metal ele- ments in human hair samples also have significant correlation to the local environmental background, the higher the contents of heavy metal elements in local environmental media such as soil, shallow groundwater and crops, the higher the contents of heaw metal elements in human hair samtples in this area.