CAJ | 학술논문

在上海崇明岛采集了101个耕层土壤样品,利用GC-μECD测定了8种多氯联苯(PCBs)浓度,并对其进行多元统计分析,探讨了其可能的污染来源.结果表明,样品PCBs浓度范围为n.d.～261ng/g,均值为56.0ng/g.低氯联苯含量和检出率均较高.不同上壤利用方式对PCBs残留量有一定影响,表现为水稻田土壤>大棚蔬菜西瓜田土壤>露天蔬菜两瓜田土壤.主成分分析和相关性研究结果显示,土壤中低氯联苯同系物间相关性较好,污染来源可能为同一类.
재상해숭명도채집료101개경층토양양품,이용GC-μECD측정료8충다록련분(PCBs)농도,병대기진행다원통계분석,탐토료기가능적오염래원.결과표명,양품PCBs농도범위위n.d.～261ng/g,균치위56.0ng/g.저록련분함량화검출솔균교고.불동상양이용방식대PCBs잔류량유일정영향,표현위수도전토양>대붕소채서과전토양>로천소채량과전토양.주성분분석화상관성연구결과현시,토양중저록련분동계물간상관성교호,오염래원가능위동일류.
Residues concentration of 8 polychlorinated biphenyls (PCBs) congeners in 101 soil samples collected at Cbongming Island of Shanghai were determined by GC-μECD. Concentrations of PCBs were between ND and 261ng/g with average of 56.0ng/g. Concentration and detection rate of low chlorinated homologues of PCBs were higher than high chlorinated homologues. Concentrations of PCBs varied with the changes of agricultural land use. Depended on the residue concentration level, the series of land use appeared as following: paddy soil>green house vegetable and watermelon soil>traditional vegetable and watermelon soil. Principal component analysis (PCA) and correlation analysis were introduced to investigate source of PCBs. The result showed that lower chlorinated homologues of PCBs were well correlated and implies that they maybe originate from similar sources.