作者： 王春利，籍 芳，孙玉慧，王英姿，李天宝，刘 炜
建立了白酒中10种农药残留的液液萃取-气相色谱-质谱联用的检测方法，样品采用正己烷萃取，无需净化。该方法在0.01～10.0 mg/L范围内线性关系良好，R2≥0.998；在0.01～1.0 mg/L添加水平范围内，平均加标回收率在 85.65 %～111.28 %之间，相对标准偏差RSD＜10 %；LOD在0.001～0.15 mg/L之间，LOQ在0.004～0.047 mg/L之间，该方法可用于白酒中农药残留的检测。 |
液液萃取； 气相色谱-质谱联用； 白酒； 农药残留 |
Rapid Determination of Multiresidue Pesticides in Baijiu by GC-MS Coupled with Liquid-Liquid Extraction
WANG Chunli, JI Fang, SUN Yuhui, WANG Yingzi, LI Tianbao and LIU Wei
Jiangmen Entry-Exit Inspection and Quarantine Bureau, Jiangmen, Guangdong 529000, China
A method for rapid determination of 10 kinds of pesticide residues in Baijiu by GC-MS coupled with liquid-liquid extraction had been developed. Baijiu samples were extracted by N-hexane with no purification. This method had a good correlation within the range of 0.01 mg/L to 10.0 mg/L, and the correlation coefficient was equal or greater than 0.998. In 0.01～1.0 mg/L addition level range, the average recovery was 85.65 % to 111.28 %, the relative standard deviation (RSD) was less than 10 %, and LOD was between 0.001～0.15mg/L and LOQ was between 0.004～0.047 mg/kg. This method could be used for the detection of pesticide residues in Baijiu.
liquid-liquid extraction; GC-MS; Baijiu; pesticide residues