Institute of Ecology and Evolution of Russian Academy of Sciences (IPEE RAS), Leninsky pr. 33, 119701 Moscow, Russia.
Environ Toxicol Pharmacol. 2008 Mar;25(2):136-43. doi: 10.1016/j.etap.2007.10.008. Epub 2007 Oct 13.
Nineteen species of fish products caught and produced in the Russian economic zone of the Baltic region in 2002-2005 were analyzed for polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and dioxin-like biphenyls (WHO-PCBs). Freshwater fish had significantly lower PCDD/PCDFs levels than most saltwater fish, except cod's fillet for which TEQ was comparable. In some cases pollutant levels of sea fish tissues essentially exceeded current regulatory values. Concentration of WHO(PCDD/F)-TEQ ranged from 0.06 to 0.57pg/g f.w. for freshwater fish, and from 0.16 to 17.83pg/g f.w. for sea fish. The special concern is caused by the high concentration of dioxin-like PCBs, whose contribution to the WHO-TEQ(PCDD/F,PCB) considerably exceeded that of PCDDs and PCDFs. Concentration of WHO(PCB)-TEQ ranged from 2.56 to 124.40pg/g f.w. Profiles of PCDD/Fs congeners in fish were rather similar: in our opinion, the most probable sources of pollution were chlorine bleaching and outflow of PCBs. There is no real reason to assume that fish contamination was affected by the fungicide Ky-5 or similar chlorophenols mixtures. Relative contributions of each dioxin-like PCBs congener to total TEQ in fish tissue are presented in Fig. 2. Profiles of dioxin-like PCBs in general are close to Aroclor 1254, though in some cases there are essential differences.
2002-2005 年期间，对在俄罗斯波罗的海经济区捕捞和生产的 19 种鱼产品进行了多氯二苯并对二恶英（PCDDs）、二苯并呋喃（PCDFs）和类似二恶英的多氯联苯（WHO-PCBs）分析。与大多数咸水鱼相比，淡水鱼的 PCDD/PCDFs 水平明显较低，但鳕鱼鱼片的 TEQ 相当。在某些情况下，海鱼组织中的污染物水平实质上超过了现行监管值。WHO（PCDD/F）-TEQ 的浓度范围为 0.06-0.57pg/g（鲜重），用于淡水鱼，0.16-17.83pg/g（鲜重）用于海鱼。特别令人关注的是，类似二恶英的多氯联苯浓度较高，其对 WHO-TEQ（PCDD/F、PCB）的贡献大大超过了 PCDDs 和 PCDFs。WHO（PCB）-TEQ 的浓度范围为 2.56-124.40pg/g（鲜重）。鱼体内 PCDD/F 同系物的浓度相当相似：我们认为，最有可能的污染源是氯漂白和 PCB 的流出。没有实际理由假设鱼类污染受到杀菌剂 Ky-5 或类似的氯酚混合物的影响。图 2 中列出了每种类似二恶英的多氯联苯同系物对鱼组织中总 TEQ 的相对贡献。一般来说，类似二恶英的多氯联苯的分布情况与 Aroclor 1254 接近，但在某些情况下存在明显差异。
