CAJ | 학술논문

为了比较重铬酸钾氧化比色法和气相色谱法测定乙醇体积分数的效果,采用这2种方法分别定量分析已知体积分数的标准液和未知体积分数的发酵液.分析和比较统计结果发现：定量分析发酵液乙醇体积分数时气相色谱法较准确,成本较高;重铬酸钾氧化比色法可以用于发酵液乙醇体积分数的批量分析,成本较低.
위료비교중락산갑양화비색법화기상색보법측정을순체적분수적효과,채용저2충방법분별정량분석이지체적분수적표준액화미지체적분수적발효액.분석화비교통계결과발현：정량분석발효액을순체적분수시기상색보법교준학,성본교고;중락산갑양화비색법가이용우발효액을순체적분수적비량분석,성본교저.
Two common quantitative analysis methods on ethanol content,including gas chromatograpy（GC） method and potassium dichromate colorimetric method,are compared when they are applied to analyze the standard solution with certain ethanol concentration and fermentation liquor with unknown ethanol concentration.The analysis results show the GC method is more accurate and comes up with higher cost in quantitatively analyzing the ethanol concentration of fermentation liquor;and that the potassium dichromate colorimetric method can be applied as a cheaper alternative method to GC method in batch quantity analysis on ethanol contents of fermentation liquors.