多氯联苯和六氯苯都是长期存在，并积累在食物链中的污染物，取缔这些物质需要长达数十年的时间。
PCBs and HCB are both long-lived pollutants that accumulate in food chains and take decades to break down.
特别是鱼类，含有致癌物(多氯联苯，DDT)和重金属(汞，砷，铅，镉)，而且这些物质无法通过蒸煮或冷冻消除。
Fish, in particular, contain carcinogens (PCBs, DDT) and heavy metals (mercury, arsenic; lead, cadmium) that cannot be removed through cooking or freezing.
同时塑料还吸收了污染物pcbs(多氯联苯)和各种农药，从而给食物链中带来有毒物质。
At the same time, plastics absorb pollutants including PCBs (polychlorinated biphenyls) and pesticides, bringing poisons into the food chain.
PCBs(多氯联苯)，一度广泛用于工业用途，但在1976年作为致癌物被取缔。
PCBs (Polychlorinated Biphenyls), once widely used for industrial purposes but outlawed as carcinogenic in 1976, can also be found in fish due to environmental contamination.
结论：多氯联苯化合物在皮肤血管瘤患儿头发中的水平增高。
Conclusion: PCBs in the hair of infants with skin hemangioma is much higher.
港口设施的建设和改造，而造成地下水污染和对空气的污染是来自石棉、含铅的油漆、灰尘、沉淀物、多氯联苯、石油碳氢化合物等。
Port facilities construction and renovation contribute to surface and ground water contamination and air pollution from asbestos, lead-based paint, dust, sediments, PCBs and petroleum hydrocarbons.
某些化合物，如多氯联苯或多氯联苯，已经被禁止在美国。
Certain compounds, such as polychlorinated biphenyls, or PCBs, have been banned in the United States.
分析了江苏无锡鼋头渚和江西共青城夜鹭卵中多氯联苯同系物的残留状况。
The residue situation of PCB congeners in eggs of night heron breeding in Wuxi area of Jiangsu and Gongqing City of Jiangxi was analyzed.
经过筛选确定苯系物、多环芳烃、有机氯农药、多氯联苯和挥发性卤代烃为主要污染物。
The main pollutants are benzene serial materials, polycyclic aromatic hydrocarbon, organochlorine insecticide, PCB and volatile halogenated hydrocarbon.
汤普森的严格的质量控制程序测试所有原材料，以确保没有化学污染物，如多氯联苯，汞和铅。
Thompson's rigorous quality control procedures test all raw materials to ensure no chemical pollutants such as PCBs, mercury and lead.
美国环保局归类为可能的人类多氯联苯等致癌物和人类的动物实验研究的基础上证据表明在多氯联苯可能导致癌症。
USEPA classifies PCBs as a probable human carcinogen based on studies of laboratory animals and other evidence that suggests that PCBs might cause cancer in humans.
介绍了水体中污染物的种类，详述了辽河流域受到多环芳烃类、有机氯农药、多氯联苯及其他有毒有害物的污染情况。
The species of pollutants in the water body were introduced, and the occurrence of PAHs, OCPs, PCBs and other toxic substances in Liaohe Basin was reviewed.
多氯联苯：任何一种由氯与联苯反应生成的非常稳定的二环有机化合物。
PCB (polychlorinated biphenyl) : Any of a class of highly stable organic compounds prepared by the reaction of chlorine with biphenyl, a two-ring compound.
多氯联苯：任何一种由氯与联苯反应生成的非常稳定的二环有机化合物。
PCB (polychlorinated biphenyl) : Any of a class of highly stable organic compounds prepared by the reaction of chlorine with biphenyl, a two-ring compound.
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