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当前位置: 首页 > 文章 > 固相萃取-高效液相色谱法测定甘蔗和土壤中二甲四氯的残留量 湖南农业大学学报(自然科学版) 2011,37 (5) 94-97
Position: Home > Articles > Determination of MCPA residue in sugarcane and soil by solid-phase extraction and high-performance liquid chromatography Journal of Hunan Agricultural University(Natural Sciences) 2011,37 (5) 94-97

固相萃取-高效液相色谱法测定甘蔗和土壤中二甲四氯的残留量

作  者：
傅强;杨仁斌;徐浩然;廖海玉;杨周宁
单  位：
湖南农业大学资源环境学院
关键词：
二甲四氯;甘蔗;土壤;固相萃取;高效液相色谱
摘  要：
建立了固相萃取-高效液相色谱法(SPE-HPLC)测定甘蔗和土壤中二甲四氯残留量。样品采用0.04 mol/L NaOH提取,中性氧化铝固相萃取柱净化,HPLC-UV检测。二甲四氯在0.05~10 mg/L线性关系良好(R2=0.999 3);最低检出浓度为0.01 mg/kg,添加水平为0.05、0.1、1.0 mg/kg时,甘蔗和土壤中回收率为82.2%～89.1%,变异系数小于10%。在甘蔗植株中,二甲四氯的消解半衰期为1.78～2.69 d;土壤样品中,二甲四氯的消解半衰期为2.40～3.64 d。
译  名：
Determination of MCPA residue in sugarcane and soil by solid-phase extraction and high-performance liquid chromatography
作  者：
FU Qiang,YANG Ren-bin,XU Hao-ran,LIAO Hai-yu,YANG Zhou-ning(College of Resources and Environment,Hunan Agricultural University,Changsha 410128,China)
关键词：
2-methyl-4-chlorophenoxyacetic acid(MCPA);sugarcane;soil;solid-phase extraction;high performance liquid chromatography
摘  要：
An analytical method was developed to extract and determine 2-methyl-4-chlorophenoxyacetic acid(MCPA) residue in sugarcane and soil using solid-phase extraction and high-performance liquid chromatography(SPE-HPLC).The MCPA residue in sugarcane and soil was dissolved in 0.04 mol/L sodium hydroxide aqueous solution,and purified through basic alumina-SPE column.Then the sample was detected by HPLC-UV.The method could be used to determine the MCPA residue in sugarcane and soil with fine linear relationship(R2=0.999 3) when the concentration range of MCPA was 0.05-10 mg/L and the limit of detection was 0.01 mg/kg.The recovery rates of MCPA from sugarcane and soil fortified with MCPA at 0.05,0.1,1.0 mg/kg were 82.2%-89.1% and 84.0%-85.7% respectively,with relative standard deviation<10%.The results showed that the half-life of degradation for MCPA was 1.78-2.69 d in sugarcane,2.40-3.64 d in soil.

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