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乙草胺在甘蔗和土壤中的残留分析及消解动态
引用本文:行艳景,尚战峰,谭辉华,李雪生,曾东强. 乙草胺在甘蔗和土壤中的残留分析及消解动态[J]. 现代农药, 2014, 0(6): 35-37
作者姓名:行艳景  尚战峰  谭辉华  李雪生  曾东强
作者单位:广西大学农药与环境毒理研究所,南宁530004
基金项目:国家自然科学基金项目(31160375、31201573); 广西“特聘专家”工程专项经费资助(2013B015)
摘    要:采用GC-μECD法测定了乙草胺在甘蔗植株、茎秆及土壤中的消解动态和最终残留。样品用乙腈提取,PSA和碳纳米管净化。结果表明:当乙草胺在植株、茎秆和土壤中的添加浓度在0.005~0.5 mg/kg时,添加回收率分别为84.84%~95.54%、81.96%~99.40%和80.91%~95.70%,相对标准偏差分别为1.67%~5.20%、1.75%~5.50%和1.11%~2.24%。乙草胺在植株和土壤中的半衰期分别为2.7~3.2 d和8.0~8.7 d。乙草胺在甘蔗植株、茎秆和土壤中的最终残留量分别为0.005 mg/kg、0.005 mg/kg和0.010~0.099 mg/kg。

关 键 词:乙草胺  甘蔗  土壤  残留  消解动态

Residue and Degradation Dynamics of Acetochlor in Sugarcane and Soil
XING Yan-jing,SHANG Zhan-feng,TAN Hui-hua,LI Xue-sheng,ZENG Dong-qiang. Residue and Degradation Dynamics of Acetochlor in Sugarcane and Soil[J]. Modern Agrochemicals, 2014, 0(6): 35-37
Authors:XING Yan-jing  SHANG Zhan-feng  TAN Hui-hua  LI Xue-sheng  ZENG Dong-qiang
Affiliation:(Institute of Pesticide and Environmental Toxicology, Guangxi University, Nanning 530004, China)
Abstract:The dissipation dynamics and final residues of acetochlor in plant, sugarcane and soil were determined by GC-μECD. The samples were extracted with acetonitrile, cleaned up by PSA and carbon nanotube. At the spiked levels of 0.005-0.5 mg/kg, the average recoveries of acetochlor in plant, sugarcane and soil were 84.84%-95.54%, 81.96%-99.40% and 80.91%-95.70%, and the relative standard deviations were 1.67%-5.20%, 1.75%-5.50% and 1.11%-2.24%. The half-lives of acetochlor in sugarcane and soil were 2.7-3.2 d and 8.0-8.7 d. The residues of acetochlor in plant and sugarcane were less than 0.005 mg/kg, the residues in soil were 0.010-0.099 mg/kg.
Keywords:acetochlor  sugarcane  soil  residue  dissipation dynamics
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