Toxic potency assessment of non- and mono-ortho PCBs, PCDDs, PCDFs, and PAHs in northwest Mediterranean sediments (Catalonia, Spain)
Toxic potency assessment of non- and mono-ortho PCBs, PCDDs, PCDFs, and PAHs in northwest Mediterranean sediments (Catalonia, Spain)
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DOI：
10.1021/es010041a
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发表时间：
2001-09-15
影响因子：
11.4
通讯作者：
Ginebreda, A
中科院分区：
文献类型：
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作者：
Eljarrat, E;Caixach, J;Ginebreda, A
从加泰罗尼亚海岸的45个海洋沉积物进行了分析，非邻位和单邻位氯取代的多氯联苯同系物，多氯二苯并对二恶英和多氯二苯并呋喃，和16多环芳烃。多氯联苯总浓度范围为1.1至311纳克/克干重，16种多环芳烃的总含量在13.4 ng/g d.w.和16.7 μ g/g d.w. PCB和PAH污染更大的城市和工业影响的网站附近的总毒性当量（TEQ）值计算使用的毒性当量因子（TEFs）由世界卫生组织提出的二恶英类多氯联苯，多氯二苯并对二恶英，多氯二苯并呋喃。这些水平介于0.03至24.8皮克WHO-TEQ/克干重之间。多氯联苯和0.4至39.2皮克WHO毒性当量/克干重。多氯二苯并对二恶英/多氯二苯并呋喃。因此，有时会超过建议的沉积物质量准则。此外，TEQ值计算多环芳烃浓度，采用不同的TEF文献提出的。获得的结果为0.3 pg TEQ/g d.w.和18.4纳克毒性当量/克干重。结果表明，海洋沉积物中PCDD/F和PCB的TEQ值比PAH的TEQ值低数倍。
Forty-five marine sediments from the Catalonian coast were analyzed for non-ortho and mono-ortho chlorine substituted PCB congeners, PCDDs and PCDFs, and 16 PAHs. Concentrations of total PCBs ranged from 1.1 to 311 ng/g dry weight (d.w.), and the levels of the sum of the 16 PAHs analyzed ranged between 13.4 ng/g d.w. and 16.7 mug/g d.w. The PCB and PAH contamination was greater near the sites of urban and industrial impact Total toxicity equivalent (TEQ) values were calculated using the toxicity equivalent factors (TEFs) proposed by WHO for dioxin-like PCBs, PCDDs, and PCDFs. These levels ranged between 0.03 and 24.8 pg WHO-TEQ/g d.w. for PCBs and from 0.4 to 39.2 pg WHO-TEQ/g d.w. for PCDDs/PCDFs. Therefore, the suggested sediment quality guideline was sometimes exceeded. Moreover, TEQ values were calculated for PAH concentrations, applying different TEFs proposed by the literature. The results obtained were between 0.3 pg TEQ/g d.w. and 18.4 ng TEQ/g d.w. and showed that the TEQ(PCDD/F) and TEQ(PCB) values were several times lower than the TEQ(PAH) values in the marine sediment samples investigated.