多维气相/气质联用法测定葡萄酒中的氨基甲酸乙酯

建立了多维气相/气质联用（MDGC/GCMS）法测定葡萄酒中氨基甲酸乙酯的检测方法。采用硅藻土固相萃取柱对葡萄酒中氨基甲酸乙酯（EC）进行提取净化，利用MDGC/GCMS对葡萄酒中EC进行检测。结果表明，葡萄酒中EC与干扰物均得到很好分离，EC在0～1 000 μg/L范围内线性关系良好（R=0.999 3），检出限（S/N=3）为1.0 μg/L，加标回收率为82.97%～86.82%，相对标准偏差（RSD）为2.29%；方法的精密度和重复性试验RSD分别为2.42%和2.88%。表明该方法准确度高、重复性和精密度良好，适用于葡萄酒中的氨基甲酸乙酯的检测。

Determination of ethyl carbamate in wine by multidimensional gas chromatography with gas chromatography mass spectrometric

The determination method of ethyl carbamate (EC) in wine was established by multidimensional gas chromatography with gas chromatography mass spectrometric (MDGC/GCMS). The EC in wine was extracted and purified by diatomaceous earth solid phase extraction column, then was detected by MDGC/GCMS. The results showed that the EC and interfering substance in wine were well separated. EC had a good linear relationship in the rage of 0-1 000 μg/L (R=0.999 3), the limit of detection (S/N=3) was 1.0 μg/L, the adding standard recover rate was 82.97%-86.82%, relative standard deviation (RSD) was 2.29%. The RSD of the precision and repeatability tests of the method were 2.42% and 2.88%, respectively, which indicated that the method had high accuracy, good repeatability and precision, and it was suitable for the detection of EC in wine.