图们市大气颗粒物中重金属含量及分布特征

Contents and Distribution Characteristic of Heavy Metal in Atmospheric Particulate of Tumen City

采集了图们市2006年秋、冬两季的TSP和PM10样品,采用湿法消解-原子吸收分光光度法测定了其中的铅、镉、铜、锌、铬、铁、锰7种重金属。结果表明,图们市大气颗粒物中重金属含量由高到低的顺序是Fe>Cr>Zn>Pb>Mn>Cu>Cd。多数重金属元素含量冬季高于秋季,在一天之内早晨的重金属浓度也往往高于晚上和中午,说明大气颗粒物的来源包括天然源和人为源。

Atmospheric particulate is the primary pollution in most cities. In order to study systematically the distribution Characteristic of heavy metals in Atmospheric particulate of Tureen, the TSP and PM10 are sampled in autumn and winter 2006, and the Contents of seven heavy metal elements Fe, Cr, Zn, Pb, Mn, Cu, Cd are analyzed by the wet digestion - atomic absorption spectrophotometry. The results show that the contents of heavy metals in atmospheric particulate of Tureen City is Fe 〉 Cr 〉 Zn 〉 Pb 〉 Mn 〉 Cu 〉 Cd. most of the heavy metal contents in the winter was more than in autumn. And within one day heavy metals contents at the morning were often higher than the evening and noon . The source of the atmosphere particulate contains natural source and human pollute source.