酿酒科技
釀酒科技
양주과기
LIQUOR-MAKING SCIENCE & TECHNOLOGY
2012年
6期
102-105
,共4页
分析检测%乙酰丙酮分光光度法%啤酒%甲醛%测定
分析檢測%乙酰丙酮分光光度法%啤酒%甲醛%測定
분석검측%을선병동분광광도법%비주%갑철%측정
analysis and measurement%acetylacetone spectrophotometry%beer%formaldehyde%determination
在酸性条件下将溶解于水中的游离甲醛随水蒸出,并与乙酰丙酮作用,建立分光光度计测定啤酒中甲醛含量的方法。结果表明,方法检出限为3.31×10-9g/mL,线性范围为0～4.20μg/10 mL,变异系数RSD=0.78%。该方法操作简便,灵敏度高,重现性好。
在痠性條件下將溶解于水中的遊離甲醛隨水蒸齣,併與乙酰丙酮作用,建立分光光度計測定啤酒中甲醛含量的方法。結果錶明,方法檢齣限為3.31×10-9g/mL,線性範圍為0～4.20μg/10 mL,變異繫數RSD=0.78%。該方法操作簡便,靈敏度高,重現性好。
재산성조건하장용해우수중적유리갑철수수증출,병여을선병동작용,건립분광광도계측정비주중갑철함량적방법。결과표명,방법검출한위3.31×10-9g/mL,선성범위위0～4.20μg/10 mL,변이계수RSD=0.78%。해방법조작간편,령민도고,중현성호。
Acetylacetone spectrophotometry was applied to measure formaldehyde content in beer by reaction of formaldehyde which was vapored in the acidic conditions with acetylacetone.The results showed that the detection limit was 3.31×10-9g/mL,the linearity range was 0～4.20 μg/10 mL,and RSD= 0.78 %.Such method was simple to operate with high sensitivity and good reproducibility.
