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自1939年DDT,六六六等有机氯被用作为杀虫剂以来,六六六就广泛应用了。六六六的特点是,杀虫能力强,防治范围广,残效时间长,价格低廉,易于大量生产。因此,三十余年来在确保农业丰收,林牧业发展、防治仓库害虫以及消天蚊蝇预防传染病等方面起了巨大作用。六六六等有机氯杀虫剂不仅使用期长,而且使用量也最大。全世界使用量最高时,每年达4。万吨。由于六六六的化学性质稳定,在高温、光和酸性反应中很难分解失效,易在生物体内蓄积。因此,造成的污染也最严重,直接或间接影
Since 1939 DDT, BHC and other organochlorines have been used as insecticides, BHC has been widely used. BHC is characterized by strong insecticidal ability, wide range of prevention and treatment, long residual effect, low price and easy mass production. Therefore, for more than thirty years, it has played a significant role in ensuring the agricultural harvest, the development of forestry and animal husbandry, prevention and control of storage pests, and the elimination of mosquitoes and flies to prevent infectious diseases. Hexachlorocyclohexane and other organochlorine pesticides not only use a long period of time, but also the largest use. The world’s highest usage, up to 4 per year. Tons of tons. As BHC chemical stability, high temperature, light and acid reaction is difficult to decompose failure, easy to accumulate in the body. Therefore, the pollution caused is also the most serious, direct or indirect shadow