%0 Journal Article
%T Fast Determination of 22 Pesticides in Rice Wine by Dispersive Solid-Phase Extraction in Combination with GC-MS
%A Nannan Chen
%A Hongbo Gao
%A Nengsheng Ye
%A Qiding Zhong
%A Zhenghe Xiong
%A Xuexin Gu
%J American Journal of Analytical Chemistry
%P 33-39
%@ 2156-8278
%D 2012
%I Scientific Research Publishing
%R 10.4236/ajac.2012.31006
%X A rapid method was developed for the determination of 22 pesticides in rice wine. The procedure involved an extraction with acetonitrile and a cleanup step using dispersive solid-phase extraction (d-SPE), and primary-secondary amine (PSA) and octadecylsilane (ODS) were used as sorbents. D-SPE had some advantages over some traditional prepara- tions, especially in time and cost. Both the extraction and cleanup only cost about 15 min per a sample. Then the GC-MS was used for quantitative and qualitative analysis. Matrix-matched standards solution and analyte protectant were compared to decrease the matrix effect, and the former showed a better efficacy. Acceptable linearity was achieved in the range of 0.05 - 0.30 mg/L. After matrix-matched standards calibration, recoveries were between 60 and 140%. For the most of pesticides, precision and repeatability were less than 10% and 16%, respectively. The result indicated that the developed method was suitable for the determination of the multi-pesticides in rice wine.
%K d-SPE
%K Rice Wine
%K Pesticide
%K GC-MS
%K Matrix Effect
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=16813