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当前位置: 首页 > 文章 > 不同茶园土壤对八氯二丙醚降解的影响 农业环境科学学报 2008,27 (04) 1692-1696
Position: Home > Articles > Residual Dynamics and Factors Affecting Degradation of Bis(2,3,3,3-tetrachloropropyl) Ether in Tea Garden Soils Journal of Agro-Environment Science 2008,27 (04) 1692-1696

不同茶园土壤对八氯二丙醚降解的影响

作  者：
谭琳;谭济才;文国华;杨仁斌
单  位：
湖南农业大学生物安全科技学院;湖南农业大学资源环境学院;湖南出入境检验检疫局
关键词：
八氯二丙醚;茶树;土壤;残留;消解动态
摘  要：
采用气相色谱(GC-ECD)分析方法,研究了八氯二丙醚(S421)在4种不同茶园土壤上的消解动态。结果表明,八氯二丙醚在土壤中降解符合一级化学动力学方程Ct=C0×e-kt。在25℃,添加量10mg·kg-1的情况下,S421的降解速率是广济寺黄红壤>沙湾黄棕壤>长沙县红壤>农大植保基地黄壤,半衰期分别为22.95、23.98、24.67、25.48d。茶园土壤的有机质含量是影响S421在土壤中降解的最主要的影响因子,有机质含量与S421半衰期相关性较强,其相关系数(r)为-0.9555。单因素条件下试验发现土壤有机质、土壤温度、S421的起始浓度和土壤灭菌对S421在土壤中的降解均有较大的影响。
译  名：
Residual Dynamics and Factors Affecting Degradation of Bis(2,3,3,3-tetrachloropropyl) Ether in Tea Garden Soils
作  者：
TAN Lin1,2, TAN Ji-cai2,WEN Guo-hua3,YANG Ren-bin1 (1.College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China;2.College of Bio-Safety Science and Technology, Hunan Agricultural University, Changsha 410128, China;3.Hunan Entry-Exit Inspection and Quarantine Bureau, Changsha 410007, China)
关键词：
bis(2, 3, 3, 3-tetrachloropropyl)ether;tea tree;soil;residues;degradation dynamic
摘  要：
GC-ECD was applied for determination of the final residue and degradation dynamic of bis(2, 3, 3, 3-tetrachloropropyl)ether in 4 kinds of tea garden soils.Results showed that the degradation equations of bis(2, 3, 3, 3-tetrachloropropyl)ether accorded with the first-order kinetics equation in yellow red earth from Guangjisi, yellow brown earth from Shawan, red earth from Changsha county and yellow earth from Hunan agriculture university.Half-lifes at 25 ℃ were 22.95, 23.98, 24.67, 25.48 d, respectively.The distinct negative correlativity exists between the degradation rate of S421 and organic matter content of soils tested, and the correlative coefficient is-0.955 5.Half-life of S421 in sterilized soil was 5.5 times longer than in non-sterilized soil.The process of degradation of S421 is somewhat sped up in a certain degree with temperature increasing.Organic matter content, temperature, initial concentration in soil, and sterilization had remarkably effect on degradation rate of S421.

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