摘要:
对五种养殖生物进行二噁英类化合物污染水平和指纹特征的研究结果显示,鱼、虾、蟹、扇贝和牡蛎的平均浓度分别是0.35pg·g-1,0.57pg·g-1,0.62pg·g-1,0.11pg·g-1和1.38pg·g-1.OCDD是五种养殖生物的最主要污染物,其次是2,3,7,8-TCDF, 1,2,3,4,6,7,8-HpCDD和OCDF. 1,2,3,7,8-PeCDD和2,3,4,7,8-PeCDF是五种养殖生物中二噁英毒性最主要的贡献者.初步认为,生活习性的差异是造成五种不同养殖生物二噁英污染水平差异的重要原因.
关键词:
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鱼
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虾
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蟹
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扇贝
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牡蛎
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二噁英
Abstract:
PCDD/Fs content and pattern in five different breed aquatic biology was studied comparatively in a typical water area in China. The average WHO-TEQ concentration of fish, shrimp, crab, shell and oyster were 0.35pg·g-1,0.57pg·g-1,0.62pg·g-1,0.11pg·g-1,1.38pg·g-1 wet weight respectively. Oyster is the most severe in PCDD/Fs contamination in five different breed aquatic biology samples. The congener-specific profile dominated by OCDD, 2,3,7,8-TCDF, 1,2,3,4,6,7,8-HpCDD and OCDF.And 1,2,3,7,8-PeCDD and 2,3,4,7,8-PeCDF were the main contributor of TEQ value. The reason of largely different level of PCDD/Fs in five breed aquatic biology samples was believed to be different biology behavior.