当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2015年
8期
1987-1989,2009
,共4页
品红-亚硫酸法%甲醇%条件优化
品紅-亞硫痠法%甲醇%條件優化
품홍-아류산법%갑순%조건우화
Fuchsin sulfurous acid method%Methanol%Optimization of conditions
甲醇含量是白酒检测中一个重要的指标，通常采用品红-亚硫酸分光光度法测其含量，该方法易受反应温度、反应时间等因素影响，对测量条件进行了优化，即氧化时间15 min、还原剂用量1.0 mL、显色时间40 min、测量波长590 nm，在该条件下获得的标准曲线的线性较好，测定的精密度和回收率均符合要求。
甲醇含量是白酒檢測中一箇重要的指標，通常採用品紅-亞硫痠分光光度法測其含量，該方法易受反應溫度、反應時間等因素影響，對測量條件進行瞭優化，即氧化時間15 min、還原劑用量1.0 mL、顯色時間40 min、測量波長590 nm，在該條件下穫得的標準麯線的線性較好，測定的精密度和迴收率均符閤要求。
갑순함량시백주검측중일개중요적지표，통상채용품홍-아류산분광광도법측기함량，해방법역수반응온도、반응시간등인소영향，대측량조건진행료우화，즉양화시간15 min、환원제용량1.0 mL、현색시간40 min、측량파장590 nm，재해조건하획득적표준곡선적선성교호，측정적정밀도화회수솔균부합요구。
The methanol content is an important index in liquor detection, the fuchsin-sulfurous acid spectrophotometry is usually used to determine methanol content in liquor, and the method is easily affected by the reaction temperature, reaction time and other factors. In this paper, the measurement conditions were optimized, and the best conditions were obtained as follows: the oxidation time 15 min, dosage of reductant 1.0 mL, coloration time 40 min, measuring wavelength 590 nm. The standard curve obtained under above conditions has well linear, the precision and recovery rate are in line with the requirements.
