名稱：毛細(xì)管柱

規(guī)格：30m*0.25mm*0.25um

型號：PEG-20M
應(yīng)用：GB/T 15038-2006 葡萄酒、果酒通用分析方法
GB/T 15038-1994 葡萄酒、果酒通用試驗(yàn)方法


浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司建立頂空氣相色譜內(nèi)標(biāo)法快速測定葡萄酒中甲醇分析方法,并通過實(shí)際葡萄酒樣檢測,比較該方法與標(biāo)準(zhǔn)方法檢測結(jié)果一致性。方法采用葡萄酒中直接加入4-甲基-2-戊醇內(nèi)標(biāo)物,頂空進(jìn)樣-氣相色譜檢測葡萄酒中甲醇。結(jié)果葡萄酒中甲醇的線性相關(guān)系數(shù)r0.999,精密度(RSD%)為1.0%~2.7%,回收率為97.6%~102.1%,檢出限為0.9mg/L;本方法與國標(biāo)方法同時檢測30份葡萄酒中甲醇,兩種方法的檢測結(jié)果的相對偏差范圍為0.6%~3.5%,作兩配對樣品t檢驗(yàn)統(tǒng)計(jì)分析,按α=0.05水準(zhǔn),差異無統(tǒng)計(jì)學(xué)意義(t=1.606,P=0.116)。結(jié)論本方法能簡便、快速地檢測葡萄酒中甲醇,且與國標(biāo)方法檢測結(jié)果一致。


葡萄酒、果酒通用分析甲醇測定 測試譜圖：



General analysis of wine and fruit wine methanol determination
General analysis methanol determination for wine and fruit wine Details:

Name: Capillary Column

Specification: 30m*0.25mm*0.25um

Model: PEG-20M
Application: GB/T 15038-2006 general analysis method for wine and fruit wine
GB/T 15038-1994 General test methods for wine and fruit wine


Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. established a headspace gas chromatography internal standard method for rapid determination of methanol in wine, and passed the actual wine sample detection to compare the consistency of the method with the standard method. Methods The internal standard of 4-methyl-2-pentanol was directly added to wine, headspace sampling-gas chromatography was used to detect methanol in wine. Results The linear correlation coefficient of methanol in wine was r0.999, the precision (RSD%) was 1.0%~2.7%, the recovery rate was 97.6%~102.1%, and the detection limit was 0.9mg/L; this method was detected simultaneously with the national standard method. For methanol in 30 wines, the relative deviation of the detection results of the two methods ranged from 0.6% to 3.5%. The statistical analysis of the two paired sample t-tests was carried out. According to the level of α=0.05, the difference was not statistically significant (t=1.606, P= 0.116). Conclusion This method can easily and quickly detect methanol in wine, and it is consistent with the results of the national standard method.


General analysis methanol determination for wine and fruit wine Test spectrum: