农药学学报Issue(1)：101-106,6.DOI:10.16801/j.issn.1008-7303.2016.0012
氯虫苯甲酰胺在甘蔗及土壤中的残留消解动态
Residues and dissipation of chlorantraniliprole in sugarcane and soil
摘要
Abstract
An analytical method with high performance liquid chromatography detection was established to determine chlorantraniliprole residues in soil, plant(aerial parts of sugarcane which stem and leaves are included) and stem(aerial parts of sugarcane without leaves) of sugarcane. Residues and dissipation of chlorantraniliprole in sugarcane and soil were investigated. Chlorantraniliprole residues were extracted with acetonitrile, then cleaned up on florisil based solid phase extraction column and by primary secondary amine(PSA), followed by determining with liquid chromatography equipped with a UV detector. The results showed that the recoveries of chlorantraniliprole in soil and sugarcane were 77%-97% at three fortification levels ranging from 0.05 to 2 mg/kg, with the relative standard deviations of 3.4%-11.6%. Limit of detection (LOD) of the method was 0.2 ng and the limit of quantification (LOQ) was 0.05 mg/kg for all these matrices. Field experiments showed that the initial residues were 1.18-3.57 mg/kg and the half lives of chlorantraniliprole were 12.4-18.2 d, when 0.4%chlorantraniliprole granules(120, 180 ga.i./hm2) was applied into the ditch when planting the sugarcane. The residues in stems of sugarcane were lower than 0.05 mg/kg at harvest time. According to the temporay maximum residue limit (TMRL) for sugarcane (0.05 mg/kg) in China, chlorantraniliprole applied once at recommended dosage and 1.5 times formed acceptable residues in sugarcane.关键词
氯虫苯甲酰胺/甘蔗/土壤/残留/高效液相色谱Key words
chlorantraniliprole/sugarcane/soil/residue/high performance liquid chromatography分类
农业科技引用本文复制引用
李红红,王彦辉,韦典,杨珂,李雪生,谭辉华,曾东强..氯虫苯甲酰胺在甘蔗及土壤中的残留消解动态[J].农药学学报,2016,(1):101-106,6.基金项目
广西特聘专家工程专项(2013B015)；广西大学“农业环境与农产品质量安全”高校重点实验室建设(桂教科研【2014】6号)；广西自然科学基金(2013GXNSFBA019049) （2013B015）
