文献类型： 外文期刊

作者： Yin Meiqiang ¹ ; Ma Tengcai ² ; Zhang Jialiang ² ; Huang Mingjing ² ; Ma Buzhou ³ ;

作者机构： 1.Dalian Univ Technol, State Key Lab Mat Modificat Electron Ion & Laser, Dalian 116023, Peoples R China

2.Dalian Univ Technol, State Key Lab Mat Modificat Electron Ion & Laser, Dalian 116023, Peoples R China; Shanxi Agr Univ, Coll Agron, Taigu 030801, Peoples R China; Shanxi Acad Agr Sci, Arid Farming Res Ctr, Taiyuan 030031, Peoples R China

3.Dalian Univ Technol, State Key Lab Mat Modificat Electron Ion & Laser, Dalian 116023, Peoples R China; Shanxi Agr Univ, Coll Agron, Taigu 030801, Peoples R China; Shanxi Acad Agr Sci, Arid Farming Res Ctr

关键词： arc discharge plasma;chlorpyrifos;degradation;kinetic equations

期刊名称：PLASMA SCIENCE & TECHNOLOGY （ 影响因子：1.567； 五年影响因子：1.281 ）

ISSN： 1009-0630

年卷期： 2006 年 8 卷 6 期

页码：

收录情况： SCI

摘要： A study is conducted to determine the effect of a kind of high-pressure arc discharge plasma on the degradation rate and kinetic equations of chlorpyrifos in different solvents with the treated times and concentrations as variables. The degradation rate was sorted in different solvents as water, methanol, acetone and then acetoacetate. The tendencies of the degradation rates with treated time in water and methanol were optimally fitted with first-order kinetics equations while those in acetone and acetoacetate were fitted with zeroth-order kinetics equations. The difference was attributed to the stronger polarity of water and methanol. The weak correlation of the degradation rates with time was mainly because the high-temperature of the arc discharge tube and the chemically-active species generated by the discharge. The degradation half-life was extended with increase of chlorpyrifos concentration. A degradation half-life less than 3 min was achieved for chlorpyrifos in water and methanol when the initial concentration was less than 300 mu g/ml.