Pharmacological-Biological Department-Chemistry and Biochemistry Section, Veterinary Medicine Faculty, University of Bari, Strada Prov. le per Casamassima Km 3, 70010, Valenzano, Bari, Italy.
Environ Sci Pollut Res Int. 2010 May;17(4):968-76. doi: 10.1007/s11356-010-0300-8. Epub 2010 Feb 20.
BACKGROUND, AIM AND SCOPE: Polychlorinated biphenyls (PCB) and dichlorodiphenyltrichloroethane (DDT) concentrations were determined in the liver of two deep sea fish species, Mediterranean slimehead and blackfin sorcerer, from the Adriatic Sea (southeastern Mediterranean Sea).
The examination of congener profiles showed that hexachlorinated molecules were dominant (hexa-CBs, 55.3-56.2%), followed by penta-CBs (21.5-21.8%) and hepta-PCB 180 (14.9-16.0%). PCB 138, 153 and 180 were the prominent congeners accounting for 69.3% of the total PCBs. Among the compounds of DDT, p,p'-DDE was the most dominant molecule (Mediterranean slimehead, 86.6%; blackfin sorcerer, 92.8%), demonstrating the old age of these compounds in the environment. In both species, PCB contents were higher than those of DDTs. Contaminant load was higher in Mediterranean slimehead (PCBs, 1,086 ng g(-1) lipid weight; DDTs, 799 ng g(-1) lipid weight) than in blackfin sorcerer (PCBs, 561 ng g(-1) lipid weight; DDTs, 224 ng g(-1) lipid weight).
The high ratios SigmaPCBs/SigmaDDTs indicated predominantly industrial versus agrarian activities in the area. Dioxins toxic equivalent (TEQ) concentrations (8.1-18.7 pg TEQ per gram wet weight) reached those encountered in marine organisms at higher levels in the trophic chain, revealing the onerous status of contamination by PCBs in Mediterranean deep sea biota.
背景、目的和范围：本研究测定了来自亚得里亚海（东南地中海）的两种深海鱼类，即地中海鲻鱼和黑鳍神仙鱼肝脏中的多氯联苯（PCB）和滴滴涕（DDT）浓度。
同系物分析表明，六氯分子占主导地位（六氯联苯，55.3-56.2%），其次是五氯联苯（21.5-21.8%）和七氯 180（14.9-16.0%）。PCB138、153 和 180 是主要的同系物，占总 PCB 的 69.3%。在 DDT 化合物中，p,p'-DDE 是最主要的分子（地中海鲻鱼，86.6%；黑鳍神仙鱼，92.8%），表明这些化合物在环境中存在已久。在这两个物种中，PCB 的含量均高于 DDTs。地中海鲻鱼的污染物负荷高于黑鳍神仙鱼（PCB，1086ng g(-1) 脂重；DDTs，799ng g(-1) 脂重）。
ΣPCBs/ΣDDTs 的高比值表明，该地区的污染主要来自工业而非农业活动。二恶英毒性当量（TEQ）浓度（每克湿重 8.1-18.7pg TEQ）达到了食物链中更高营养级别的海洋生物中遇到的浓度，表明地中海深海生物群中 PCB 的污染程度相当严重。
