| 大连市海产品中短链氯化石蜡的含量与分布研究 |
| 摘要点击 1966 全文点击 1015 投稿时间：2013-09-17 修订日期：2013-11-04 |
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| 中文关键词 短链氯化石蜡 海产品 累积 分布 相关性 |
| 英文关键词 short-chain chlorinated paraffins(SCCPs) seafood accumulation distribution correlation |
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| 中文摘要 |
| 在大连市金石滩采集海产品，使用GC/ECNI-LRMS技术对样品中短链氯化石蜡（SCCPs）的累积和分布特征进行了研究. 结果表明，∑SCCPs在香螺样品中含量最低，毛蚶样品中含量最高，干重浓度分别为77 ng·g-1和8250 ng·g-1.∑SCCPs在鱼类、虾蟹和贝类中的干重浓度分别为100~3510、394~5440和77~8250 ng·g-1. 总体上看，海产品中SCCPs碳原子同族体以C10和C11为主，约占总量的61.1%，∑SCCPs含量越高的海产品倾向于累积更高比重的C12和C13. Cl7、Cl8和Cl6为主要的氯原子同族体，约占总量的87.6%. 除了Cl5与Cl10，样品中SCCPs各碳（氯）同族体之间均存在显著相关性，这表明它们可能有着相同的来源和相似的生物蓄积以及迁移转化过程. |
| 英文摘要 |
| Seafood samples were collected from Dalian, China to study the accumulation and distribution characteristics of short chain chlorinated paraffins (SCCPs) by GC/ECNI-LRMS. ∑SCCPs (dry weight) were in the range of 77-8250 ng·g-1, with the lowest value in Scapharca subcrenata and highest concentration in Neptunea cumingi. The concentrations of ∑SCCPs(dry weight) in fish, shrimp/crab and shellfish were in the ranges of 100-3510, 394-5440, and 77-8250 ng·g-1, respectively. Overall, the C10 and C11 homologues were the most predominant carbon groups of SCCPs in seafood from this area,and a relatively higher proportion of C12-13 was observed in seafood with higher concentrations of ∑SCCPs. With regard to chlorine content, Cl7, Cl8 and Cl6 were the major groups. Significant correlations were found among concentrations of different SCCP homologues (except Cl5 vs. Cl10), which indicated that they might share the same sources and/or have similar accumulation, migration and transformation processes. |
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