乙撑硫脲在人参和土壤中残留分析与消解动态  

Residue Analysis and Degradation Dynamics of Ethylenethiourea in Panax ginseng and Soil

作　　者：许允成[1] 王春伟[1] 高洁[1] 

机构地区：[1]吉林农业大学,长春130118

出　　处：《东北林业大学学报》2012年第4期117-119,共3页Journal of Northeast Forestry University

基　　金：国家科技支撑计划(2007BAQ00159-01);吉林省科技发展计划(20090903)

摘　　要：通过田间试验和液相色谱分析技术研究了75%代森锰锌WP的杂质及代谢物乙撑硫脲在人参和土壤中残留分析与消解动态。试验结果表明:当75%代森锰锌WP的施药剂量为推荐剂量的2倍(6 250 g/hm2)时,其杂质及代谢物乙撑硫脲在人参和土壤中原始沉积量分别为0.025和0.032 mg/kg,半衰期分别为18.1和14.2 d。当使用75%代森锰锌WP施药1次,测得人参中乙撑硫脲残留量均低于欧洲规定的农药最高残留限量值(0.05mg/kg),按照推荐剂量3 125 g/hm2处理,建议我国乙撑硫脲在人参上的最大残留限量值可暂定为0.02～0.04 mg/kg,施药次数为1次。Field trial and high performance liquid chromatography analysis were performed to study the residue and degradation dynamics of the impurity in Mancozeb（75% WP） and its metabolite ethylenethiourea in Panax ginseng and soil.Results of the field trial showed that,when the application dosage of Mancozeb（75% WP） was three times as much as the recommended dosage（6 250 g/hm^2）,the original deposition of ethylenethiourea in P.ginseng and soil were 0.025 and 0.032 mg/kg,and the half-life periods were 18.1 and 14.2 d,respectively.When the ginseng was sprayed with Mancozeb（75% WP） once,the ethylenethiourea residues in P.ginseng were all below the maximum residue limit of Europe（0.05 mg/kg）.It is recommended that the maximum residue limits of ethylenethiourea in P.ginseng prayed once during the growth period according to the recommended dosage of Mancozeb（3 125 g/hm^2） should be determined as 0.02-0.04 mg/kg temporarily.

关 键 词：乙撑硫脲 人参 土壤 残留动态 液相色谱 

分 类 号：S481.8[农业科学—农药学]