本文对零价金属铁镁混合粉末对多氯联苯污染土壤的修复效果进行了研究，取得了很好的结果。
This paper has investigated the effect of zero-valent metallic mixed powder by iron and magnesium for repairing PCB-contaminated soils and has obtained good results.
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.
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.
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.
随着多氯联苯的广泛使用，越来越多的多氯联苯进入环境，并在环境中积蓄下来。由于多氯联苯的难降解性和毒性，所以防治多氯联苯的污染尤为重要。
With widely used, more and more PCBs entered environment and accumulated there. The prevention of PCBs is specially important due to its toxicity and the difficulty of degradation .
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.
环境压力来自多氯联苯(PCB)污染。
The stress in question is pollution by polychlorinated biphenyls (PCBs).
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.
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.
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.
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