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环境致癌物作为引起人类癌症的主要因素已有许多报导。80％左右的致癌因子来自外部环境,通过改善环境可以达到预防的目的。同时报告中还指出,食品中致癌物是致癌的主要因素之一,约占40～60％。另一方面,也有报导指出,有代表性的环境致癌物——多环芳香族碳氢化合物(以下称PAHs)已从大气悬浮性颗粒物、砂土、底质、海水、鱼贝类、食品等中检出,它对环境造成广泛的污染。
Environmental carcinogens have been the subject of many reports of human cancers. About 80% of carcinogenic factors from the external environment, through the improvement of the environment can achieve the purpose of prevention. At the same time the report also pointed out that carcinogens in food is one of the main carcinogenic factors, accounting for 40 to 60%. On the other hand, there are also reports that the representative environmental carcinogens, polycyclic aromatic hydrocarbons (hereinafter referred to as PAHs), have been extracted from atmospheric suspended particles, sand, sediment, seawater, fish and shellfish, food and the like In the detection, it caused extensive environmental pollution.