Preliminary study on persistent organic pollutants (POPs)——PCBs in multi-phase matrices in Minjiang River Estuary
- 海洋环境－已发表论文 
对闽江口水、间隙水与沉积物中的 2 1种多氯联苯的进行调查研究 ,结果表明 ,闽江口水中多氯联苯的含量范围是0 2 0— 2 4 7μg L ,间隙水中的含量为 3 19— 10 86 μg L ,沉积物 (干重 ) :15 13— 5 7 93μg kg ;与其他河口、海域相比 ,闽江口的多氯联苯污染水平相对较为严重 ;间隙水的污染物浓度普遍要比其上覆水的浓度要高 ,而沉积物中的浓度比间隙水、表层水要高 .水体中的多氯联苯主要部分为含 3— 6氯多氯联苯 ,多氯联苯的主要组分间的正相关性表明其具有相似、稳定的来源特征并且在环境中行为相关 ;对该河口的污染水平进行了初步的评价 ,其水质多氯联苯超过USEPA的标准 ,沉积物方面也部分超过参考评价标准The contents of 21 PCBs in water, porewater and surface sediments from Minjiang River Estuary were analyzed by GC ECD, and confirmed by GC MSD. The range of PCBs was 0 204—2 47?μg/L at water, 3 19—10 85?μg/L at porewater, and 15 13—57 93?μg/kg at sediments. Compared with the results of other estuaries and gulfs, it showed that the pollution of PCBs was some seriouis. The concentration difference in surface water, middle water, bottom water, porewater and sediments, due to the higher affinity of these hydrophobic compound for sedimentary phase than to water and a potential flux of pollutants from sediments to overlying water. The three to six chlorine PCBs were predominate in all water, poerwater and sediment samples. At the same time, it was found that the positive relationsip among the PCBs congeners (PCB52, PCB28 and PCB101) , which indicated that the pollulants came from a same and stable source, and the behaviors of the pollutants were related.