Headspace Solid-Phase Microextraction for Ethyl Carbamate Determination in Table Wine Samples
Ethyl carbamate is a pluripotent carcinogen, and most fermented foods and beverages, including table wine, contain trace amounts of ethyl carbamate. The optimized parameters of the solid phase microextraction of table wine were: sample pH was 10.2, and 9.0 mL sample and 2.0-2.5 g (20-25%) sodium chloride were added to the vial; A 70 μm CW/DVB fiber was inserted into the headspace for 35 min at 40°C, then the fiber removed from the sample vial and inserted into the injection port of the GC for 10 min. Under this extraction conditions, the recoveries and the precision were 93.4-101.0% and 3.73-7.10%, respectively. The limit of detection was 3.0 μg/L. The solid phase microextraction technique was successfully applied to determine the EC levels in table wines. The extraction method was rapid and simple, and without the need for any organic solvent. It was an environmental protecting extraction method.
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
X. H. Liang et al., "Headspace Solid-Phase Microextraction for Ethyl Carbamate Determination in Table Wine Samples", Advanced Materials Research, Vols. 236-238, pp. 2072-2075, 2011