不同河道型态对水中PCBs残留特征的影响研究  

Residual Characteristics of Polychlorinated Biphenyls in Water Under Different Watercourse Patterns

作　　者：孙洁[1] 赵振华[1,2] 吴琼[3] 孙连保 

机构地区：[1]河海大学环境学院,南京210098 [2]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,南京210098 [3]晋中学院生物科学与技术学院,山西晋中030619 [4]水文水资源勘测分局,山西晋中030600

出　　处：《四川环境》2015年第2期7-13,共7页Sichuan Environment

基　　金：国家自然科学基金重点项目(41371307;41230640);国家水体污染控制与治理科技重大专项(2009ZX07317-007)

摘　　要：以南京市溧水县白马镇岔河流域为研究对象,测定了夏秋两季（7月和9月）不同河道型态下各采样点水体中14种PCBs同系物的残留浓度。结果发现：1夏秋两季水中∑PCBs浓度介于5.81~276.82ng/L,平均值为63.43ng/L。各采样点夏季PCBs残留浓度要明显高于秋季,从组成上来看,三氯和四氯低氯代联苯的质量分数远高于五氯以上高氯代联苯;2此研究得到各采样点∑PCBs残留浓度由高到低依次为：2#QD（153.71ng/L）〉1#QB1（71.36ng/L）〉2#QX（59.02ng/L）〉1#QB2（46.00ng/L）〉1#QN2（40.26ng/L）〉1#QN1（10.24ng/L）;3冗余分析表明,河道型态及其所引起环境指标的改变,对水体中∑PCBs的残留浓度存在着明显影响。14 Polychlorinated Biphenyls（ PCBs） congeners in water under different watercourse patterns had been determined in both summer and autumn（ July and September） in Chahe River,Baima Town,Nanjing City,China. The results showed that：1The total residual concentration of PCBs in summer and autumn ranged from 5. 81 to 276. 82 ng/L（ average value 63. 43 ng/L）. The residual concentration of PCBs in summer was greatly higher than autumn for each sampling site. As to the profile of PCBs homologues,the concentration of tri- CBs and tetra- CBs was obviously higher than the concentration of penta- CBs to deca- CBs; 2The total residual PCBs appeared as the following： 1 #QD（ 153. 71 ng / L）〉 1 #QB1（ 71. 36 ng / L） 〉2 #QX（ 59. 02 ng/L） 〉1#QB2（ 46. 00 ng/L） 〉1#QN2（ 40. 26 ng/L） 〉1#QN1（ 10. 24 ng/L）; 3Redundancy Analysis（ RDA）indicated that watercourse patterns and the corresponding environmental index changes had a significant impact on PCBs residues in water.

关 键 词：多氯联苯 河道型态 残留特征 冗余分析 

分 类 号：X522[环境科学与工程—环境工程]