Distribution, composition, and ecological risk of surface sedimental polychlorinated naphthalenes in the East China Sea
Distribution, composition, and ecological risk of surface sedimental polychlorinated naphthalenes in the East China Sea
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东海表层沉积多氯萘分布、成分及生态风险
DOI：
10.1016/j.marpolbul.2018.07.017
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发表时间：
2018-10-01
影响因子：
5.8
通讯作者：
Yao, Peng
中科院分区：
文献类型：
--
作者：
Liu, Aifeng;Jia, Jiaojiao;Yao, Peng
为揭示东海表层沉积物中多氯萘（PCNs）的污染水平并评估其生态风险，采集了75个表层沉积物样品，采用高分辨质谱法进行分析。多氯化萘含量范围从低于检测限到261.71纳克/克干重，整体上呈向海递减趋势。一氯化萘、四氯化萘和七氯化萘是主要同系物，而CN-2、CN-73和CN-75是大多数样本中的主要单个成分。CN-2的含量较低（16.48 +/- 3.40 ng/g d.w.）在研究区的中心和较高的含量（50.88 +/- 10.39纳克/克干重）在边界的北部和南部毒性当量含量范围为0至0.212纳克/克，CN-2和CN-73是毒性当量的主要贡献者。
To reveal the pollution levels and estimate the ecological risks of polychlorinated naphthalenes (PCNs) in the East China Sea (ECS), seventy-five surface sediment samples were collected and analyzed by high-resolution mass spectrometry. PCN contents ranged from below detection limit to 261.71 ng/g dry weight (d.w.), with an integrally seaward decreasing trend. Mono-, tetra-, and hepta-CNs were the dominant homologs, and CN-2, CN-73, and CN-75 were the major individual components in most samples. CN-2 presented an obvious boundary with lower contents (16.48 +/- 3.40 ng/g d.w.) in the center of the study area and higher contents (50.88 +/- 10.39 ng/g d.w.) in the north and south of the boundary. The toxic equivalent (TEQ) contents ranged from 0 to 0.212 ng/g, and CN-2 and CN-73 were the predominant contributors to the TEQ.