藓袋法对深圳市痕量大气重金属污染物的监测

摘要

This present study investigated airborne trace heavy metals of V,Cr,Mn,Co,Ni,Cu,Zn,As,Cd and Pb in Shenzhen by using moss-bag technique plus ICP-AES analysis.Seventeen sites across four administrative regions,in-cluding Yantian,Luohu,Futian and Nanshan were selected for placing moss bags.The sesults showed that the trace heavy metals varied in these four districts.The pollution of Nanshan was less serious than that of the other three dis-tricts.The main reasons were probably related to the land and water traffic conditions,industrial development,popu-lation density and geographic location.Cluster analysis of heavy metal concentration contents showed in all monitored sites,the most polluted ones were of industrial and traffic heavy areas,and relative mild polluted were far from indus-try and highways to some extent.The above showed that the industry and highways played a crucial role in atmos-pheric pollution.The government must do more to alleviate the atmospheric heavy metal pollution in Shenzhen.%通过在深圳市盐田、罗湖、福田、南山4个行政区17个不同地点布放藓袋，并对其所吸附的 V、Cr、Mn、Co、Ni、Cu、Zn、As、Cd、Pb 等10种重金属元素的含量进行检测和比较研究，发现4个行政区在不同程度上都受到了污染，其中南山区的污染较轻，罗湖区、福田区与盐田区较为严重。污染程度可能与水陆交通和工业状况、人口密度以及特殊的地理位置有关。对深圳市17个监测点的大气重金属富集含量进行聚类分析发现，污染较为严重的地区均为工业区和交通密集区，污染相对较轻的监测点都离工业及交通污染源相对较远。