上海市浦东地区潮滩底质重金属环境质量评价

笔者在野外考察和系统采样分析的基础上,对浦东地区潮滩底质的环境质量作了评定.评定揭示,目前浦东地区潮滩已不同程度遭受重金属污染,在各个重金属因子中,以铅的污染最严重,依次为镉、砷、铜、锌和铬.从重金属综合污染的环境质量分级来看,已有四分之三的潮滩遭受污染,其中中污染和重污染区占四分之一强.空间上污染最严重的地段在川沙县白龙港排污口一带.潮滩的污染还影响了长江口南港河槽底质的恶化.为了保护浦东经济发展区的自然环境,合理开发潮滩资源,文章指出,必须采取有效措施防止和治理潮滩底质的重金属污染.

Environmental Qualitative Evaluation of Heavy Metal of Tidal Flat Matter in Pudong Area in Shanghai

The environmental quality of tidal flat matter in Pudong Area has been evaluated.Among various kinds of metal pollutions, lead is the most serious, next are cadmium, arsenic, copper, zinc and chromium orderly.By environmental qualitative grade of comprehensive pollution of heavy metal, it is found that three-fourth of the tidal flat is polluted, and among them over one-fourth of the area is moderately polluted or highly polluted.The most seriously polluted area in space is near the Bai-long-gang outlet for sewage in Chuansha County, Besides, the pollution of tidal flat also aggravats the bottom matter of river bed in South Channel in the mouth of yangtze River.Effective methods should be adopted to protect the Pudong economic development area.