福建近岸表层海水中阴离子表面活性剂和PCB的污染

用亚甲蓝分光光度法和GC-ECD法分别对福建近岸表层海水中的阴离子表面活性剂和PCBs进行了分析,初步探讨了表层海水中这两类污染物的来源.表层海水中阴离子表面活性剂浓度范围为0.04～1.987 mg/L,较高浓度值站点主要位于九龙江口、闽江口和湄洲湾海域.PCBs的浓度在3.9～367.1 ng/L之间,整体上近岸站点浓度值比离岸站点高,中北部浓度值比南部高.与其他地区的研究结果及海水水质标准进行比较,福建沿海表层海水中阴离子表面活性剂和PCB的污染都较为严重.

Pollution of anionic surfactant and PCB in coastal surface seawater of Fujian Lprovince

The anionic surfactant and PCB in the coastal surface seawater of Fujian province were analyzed by methylene blue spectrophotometric method and GC-ECD,respectively.The concentrations of methylene blue active substance (MBAS) in the surface seawater ranged from 0.04 to 1.987 mg/L with the highest value found at the pipe outlet near Xiamen University.The elevated concentrations of MBAS were observed in Jiulongjiang,Minjiang Estuary and Meizhou Bay,possibly due to the discharge of sewage.The concentrations of total PCBs (dissolved plus particulate phase) ranged from 3.9 to 367.1 ng/L in the surface Lseawater and increased concentrations were observed from offshore to inshore and from south to north.The pollution of anionic surfactants and PCBs in the coastal surface seawater of Fujian Province is a serious problem comparing with other values reported and US and Canada seawater-quality criteria.