农药学学报2012，Vol.14Issue(5)：533-538,6.DOI:10.3969/j.issn.1008-7303.2012.05.11
春雷霉素在水稻田水和土壤中的残留及消解动态
Residue and decline study of kasugamycin in paddy water and paddy soil
张清鹏 1周游 1唐亮 1张宁 1张志祥1
作者信息
- 1. 华南农业大学天然农药与化学生物学教育部重点实验室,广州510642
- 折叠
摘要
Abstract
A method for the determination of kasugamycin residue in paddy water and soil was established by means of SCX-solid phase extraction (SPE) and high performance liquid chromatography (HPLC). The paddy water sample was filtrated directly and then cleaned up by SCX-SPE column, while the samples in soil were extracted with V(acetone): V( water) = 3:7 by ultrasonic wave and cleaned up by SCX-SPE column. The kasugamycin was determinated by ion-pair reversed-phase high performance liquid chromatography (IP-HPLC) with heptane sulfonicacid sodium. The linear ranges were 0.05 -5.0 mg/L and 0. 01 -0. 5 mg/kg with the linear correlation coefficient of 0. 999 9. The average fortification recovery of paddy water was 83. 8% - 92. 4% with relative standard deviation (RSD)of 3.67% -5.21% and that of paddy soil was 79.7% -84.5% with relative standard deviation (RSD)of 4.39% -5. 62% when kasugamycin was spiked at 0. 01 - 0. 5 mg/L level. The limits of detection(LOD) for kasugamycin was 0. 001 mg/L in paddy water, and 0. 001 mg/kg in paddy soil. The limits of quantification(LOQ) for kasugamycin in paddy water and paddy soil were 0. 01 mg/L and 0.01 mg/kg. The method was used to detect the degradation of kasugamycin in the paddy water and soil in Guangdong, Guangxi and Hubei in 2011. The degradation research of kasugamycin in paddy water and soil suggested that the decline curves accorded with the first-order kinetics equation. Kasugamycin declined fast in paddy water, the half-life of kasugamycin in paddy water was 2. 88 d (Guangdong) ,2.52 d(Guangxi) and 2.68 d(Hubei) ,respectively. Kasugamycin declined slower in the paddy soil than in the paddy water. The half-life of kasugamycin in paddy soil was 4. 12 d (Guangdong) ,5.41 d (Guangxi) and 4. 89 d (Hubei), respectively, indicated that the Kasugamycin was digested easy in the paddy soil and paddy water.关键词
春雷霉素/田水/土壤/残留/消解动态Key words
kasugamycin/paddy water/paddy soil/residue/decline dynamic分类
化学化工引用本文复制引用
张清鹏,周游,唐亮,张宁,张志祥..春雷霉素在水稻田水和土壤中的残留及消解动态[J].农药学学报,2012,14(5):533-538,6.
