文档介绍：阿特拉津的微生物降解研究进展
冯嫄
(河南大学环境与规划学院,开封 475000)
摘要:阿特拉津是一种低毒性除草剂,在世界范围内已经使用了四十多年,目前仍然是应用广泛的化学除草剂之一。在许多国家及地区的水体和土壤中都检测出了阿特拉津及其降解产物的残留,阿特拉津在土壤和水体中的滞留期较长且具有生物蓄积性,不但对粮食和食品安全构成了潜在威胁, 而且会扰乱和破坏生物活性, 对生态环境的影响具有全球性。因此,阿特拉津的降解成为目前研究的热点,其中,由于降解速率快,无污染,效率高,阿特拉津的微生物降解显得尤为重要。
关键词:阿特拉津;微生物;降解
Atrazine biodegradation of progress
Feng Yuan
(Environmental and planning collage, Henan University, Kaifeng 475000)
Abstract: Atrazine is a low-toxicity herbicide, has been used worldwide for over forty years, is still one of the widely used chemical herbicides. Detected in many countries and regions of the body of water and soil of atrazine and its degradation products residues of atrazine in soil and water retention period is long and umulation, not only for food and food constitute a potential threat to security, and will disrupt and destroy the biological activity, the impact on the ecological environment of a global nature. Therefore, the degradation of atrazine has e the focus of current research, which, due to the fast rate of degradation, pollution, high efficiency, microbial degradation of atrazine is particularly important.
Key words: atrazine; anisms; degradation
引言
阿特拉津( atrazine,以下简称AT,2-***- 4-乙基***-6-异丙基***-1, 3, 5-三嗪)又名莠去津,系均三氮苯类农药,分子式: 6,为无色晶体,熔点173~175℃,蒸汽压40100LPa( 20℃),溶解度33mg/L,相对分子量:21517,在中性、弱酸、弱碱介质中稳定。1952年由Geigy化学公司开发,并于1958年申请瑞士专利,1959年投入商业生产( al 1996)。阿特拉津是选择性内吸传导型苗前、苗后除草剂,适用于