A fast, simple and green method for the extraction of carbamate pesticides from rice by microwave assisted steam extraction coupled with solid phase extraction.
This paper presented a fast, simple and green sample pretreatment method for the extraction of 8 carbamate pesticides in rice. The carbamate pesticides were extracted by microwave assisted water steam extraction method, and the extract obtained was immediately applied on a C18 solid phase extraction cartridge for clean-up and concentration. The eluate containing target compounds was finally analysed by high performance liquid chromatography with mass spectrometry. The parameters affecting extraction efficiency were investigated and optimised. The limits of detection ranging from 1.1 to 4.2ngg(-1) were obtained. The recoveries of 8 carbamate pesticides ranged from 66% to 117% at three spiked levels, and the inter- and intra-day relative standard deviation values were less than 9.1%. Compared with traditional methods, the proposed method cost less extraction time and organic solvent.
College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
Weitao
W
Song
Yiqun
Y
Zhang
Guijie
G
Li
Haiyan
H
Chen
Hui
H
Wang
Qi
Q
Zhao
Dong
D
He
Chun
C
Zhao
Lan
L
Ding
D002851:Chromatography, High Pressure Liquid; D005506:Food Contamination / Q000032:analysis; D055772:Green Chemistry Technology / Q000295:instrumentation / Q000379:methods*; D008872:Microwaves; D012275:Oryza / Q000737:chemistry*; D010575:Pesticides / Q000032:analysis / Q000302:isolation & purification*; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*; D053719:Tandem Mass Spectrometry
D010575:Pesticides
Carbamate; Green pretreatment method; Microwave assisted water steam extraction; Rice; Solid phase extraction