分析化学2012，Vol.40Issue(1)：140-144,5.DOI:10.3724/SP.J.1096.2012.10488
超高效液相色谱-串联质谱法测定水稻基质中阿维菌素残留量
Determination of Abamectin Residue in Paddy Rice by Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry
摘要
Abstract
A new method for the confirmation and quantification of abamectin residues in paddy rice was established based on ultra performance liquid chromatography-tandem mass spectrometry. The matrix effects for the method were studied. Paddy soil, paddy hull, brown rice and rice straw were extracted with acetonitrile by an oscillator, and cleaned up by C18 SPE cartridge or florisil column. Paddy water was extracted with ethyl acetate by liquid-liquid partition, and cleaned up by C18 SPE cartridge. The detection was performed by tandem mass spectrometry with electrospray ionization in positive mode (ESI+ ). Average recoveries of paddy soil, paddy water and brown rice at three spiked levels (1.0, 10. 0 and 100 μg/kg, or ug/L) were found in the range of 84% -107% with RSD< 13. 6%. Average recoveries of paddy hull and rice straw at two spiked levels (10. 0 and 100 μg/kg) were found in the range of 90% -103% with RSD<12. 9%. Limits of detection(LODs)of abamectin in paddy soil, paddy water and brown rice were 0. 3 μg/kg, which were lower than the maximum residue limit (MRL) established by the Japanese and the European legislation in rice (10 μg/kg). Limits of detection (LODs) of abamectin in paddy hull and rice straw were 3. 0 μg/kg. A good linear relationship was obtained in the range of 2. 0 - 100 μg/L with the correlation coefficient (r) over 0. 999.关键词
阿维菌素/液相色谱-串联质谱/残留/水稻Key words
Abamectin/Ultra performance liquid chromatography-tandem mass spectrometry/Residue/Paddy rice引用本文复制引用
何红梅,李振,赵华,张春荣,胡秀卿,平立凤,吴珉,张昌朋,蔡晓明,朱亚红..超高效液相色谱-串联质谱法测定水稻基质中阿维菌素残留量[J].分析化学,2012,40(1):140-144,5.基金项目
本文系863基金项目(No 2011AA100806)资助 （No 2011AA100806）
