比浊法测定啤酒中的氯离子  

Determination of chlorine ion content in beer by turbidimetry

作　　者：李鹏飞[1] 李崎[1] 顾国贤[1] 

机构地区：[1]江南大学教育部工业生物技术重点实验室,江苏无锡214122

出　　处：《食品工业科技》2008年第10期259-260,263,共3页Science and Technology of Food Industry

基　　金：国家"十一五"重大科技支撑专项(2007BAK36B01)

摘　　要：采用氯化银比浊法直接测定啤酒中微量的氯离子,研究了测量波长、稳定时间、酸度、稳定剂对结果的影响。最佳实验条件为:检测波长440nm,线性范围0～6μg/mL,方法检测限为0.032μg/mL。该法测定啤酒中不同浓度微量氯离子的相对标准偏差小于0.5%,加标回收率为97.7%～101.3%。结果表明,该法准确、快速、简便,其它的常见离子无干扰,适用于啤酒厂的日常检测。A chemical analysis method for chlorine ion content in brewing water and beer by turbidimetry was studied. It was researched that the effects of measuring wavelength, acidity, stabilizer, stabilized time on the measured absorbance. The optimal analysis conditions were as follows. The determination wavelength was 440nm. The linear range was 0-6μg/mL and the detection limit was 0.032μg/mL. The relative standard deviation was less than 0.5%. The recoveries were 97.7%-101.3%. This method was rapid, accurate and simple. It can be used for the chlorine ion content determination in routine analysis.

关 键 词：氯离子 氯化银 比浊法 啤酒 

分 类 号：TS207.3[轻工技术与工程—食品科学]