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区域环境污染研究

摘要：利用SPEGCFPD对厦门附近海域的微表层、表层、底层海水及九龙江入海口高、低潮水中有机磷农药进行了分析.结果表明,有机磷农药的含量范围为:低于检测限～725.54ng·L^-1,平均值为136.47ng·L^-1.研究海区中马銮内湾有机磷农药污染最为严重(165.77～453.42ng·L^-1,平均296.01ng·L^-1),九龙江口、西海域和西南海域污染水平接近(16.26～200.65ng·L^-1,平均84.59ng·L^-1),东部海域有机磷农药污染最轻(10.38～66.01ng·L^-1,平均38.14ng·L^-1).九龙江入海口高潮水中农药的浓度明显低于低潮水中浓度,说明海域中多数农药污染来源于九龙江流域输入,少数农药来源于海域周边地区或九龙江流域和海域周边地区共同输入,微表层对有机磷农药的富集作用不明显.

Abstract：Organophosphorus Pesticides (OPPs) were determined in microsurface water, subsurface water and bottom water in Xiamen sea area with SPE-GC-FPD. The result showed that the levels of all OPPs ranged from below detection limit to 725.54ng·L^-1, the mean was 136.47ng·L^-1. The pollution in Maluan Bay was the most serious(165.77～453.42ng·L^-1,mean 296.01ng·L^-1) and the Eastern Sea was the slightest(10.38～66.01ng·L^-1,mean 38.14ng·L^-1). Meanwhile, the levels of OPPs in Jiulong estuary were closed to that in the Western Sea and the Southwestern Sea(16.26～200.65ng·L^-1,mean 84.59ng·L^-1). It was clear that the concentrations of OPPs in the high tide were much lower than that in the low tide in Jiulong River where freshwater and seawater mixed. The results indicated that the most contribution of OPPs in Xiamen Sea came from watershed, and minority was input from ambient area in Xiamen sea or from both watershed and sea. The enrichment of OPPs in microlayer sea water was not obvious by comparing the concentrations of subsurface water.