Method for quickly determining ethyl carbamate (EC) in alcoholic drink
A medium urethane, rapid determination technology, applied in the field of analysis and detection, can solve problems such as interference and limited applicability
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Embodiment 1
[0015] Example 1 Rapid Determination of EC in Yellow Rice Wine
[0016] The present invention selects a commercially available rice wine, dilutes the wine sample to a final alcohol content of 4% to 20% (v / v) with redistilled deionized water, draws 8 mL of the diluted wine sample and places it in a 20 mL headspace bottle , add 8μL PC internal standard solution (150mg / L), then add 3g sodium chloride, tighten the bottle cap, insert 85μm PA extraction head for headspace solid-phase microextraction and gas chromatography-mass spectrometry to detect EC content. The measured EC content is shown in Table 1.
[0017] Table 1 EC content in a commercial rice wine
[0018] wine sample EC content (μg / L) A commercially available rice wine 87.14
Embodiment 2
[0019] The rapid determination of EC in the embodiment 2 wine
[0020] The present invention selects a commercially available wine, dilutes the wine sample with redistilled deionized water to a final alcohol content of 4% to 20% (v / v), draws 8 mL of the diluted wine sample and places it in a 20 mL headspace bottle , add 8μL PC internal standard solution (150mg / L), then add 3g sodium chloride, tighten the bottle cap, insert 85μm PA extraction head for headspace solid-phase microextraction and gas chromatography-mass spectrometry to detect EC content. The measured EC content is shown in Table 2.
[0021] Table 2 EC content in a commercially available wine
[0022] wine sample EC content (μg / L) a commercial wine 10.37
Embodiment 3
[0023] Example 3 Rapid Determination of EC in Dew Wine
[0024] The present invention selects a commercially available wine, dilutes the wine sample with redistilled deionized water to a final alcohol content of 4% to 20% (v / v), draws 8 mL of the diluted wine sample and places it in a 20 mL headspace bottle , add 8μL PC internal standard solution (150mg / L), then add 3g sodium chloride, tighten the bottle cap, insert 85μm PA extraction head for headspace solid-phase microextraction and gas chromatography-mass spectrometry to detect EC content. The measured EC content is shown in Table 3.
[0025] Table 3-EC content in commercially available wine
[0026] wine sample EC content (μg / L) A commercially available liquor 25.11
[0027] Beverage wine applicable to the present invention is not limited to yellow rice wine, wine, dew wine, but also includes fruit wine, mixed wine, cooking wine and the like.
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