液液萃取-银量法测定辣椒调味品中氯化钠的含量  

Determination of Sodium Chloride in Pepper Condiment by Liquid-liquid Extraction-Silver Content Method

作　　者：彭建波 荀春 刘烨 王秀丽 杨亚玲[2] Peng Jianbo;Xun Chun;Liu Ye;Wang Xiuli;Yang Yaling(Yunnan Salt Industry Co.,Ltd.,Kunming,Yunnan,650000;Kunming University of Science and Technology,Faculty of Life Science and Technology,Kunming,Yunnan,650500)

机构地区：[1]云南省盐业有限公司,云南昆明650000 [2]昆明理工大学生命科学与技术学院,云南昆明650500

出　　处：《中国井矿盐》2019年第4期36-38,共3页China Well and Rock Salt

摘　　要：因调味品中添加剂对氯化钠含量的测定干扰严重,本研究建立了以有机溶剂乙酸乙酯作为萃取剂,涡旋混合后结合液液萃取(LLE)-银量法测定氯化钠的含量。研究了酸度、萃取剂种类、萃取剂用量、萃取时间等条件对测定的影响。结果表明:在最优条件下,加标回收率为92.8~96.39%,相对标准偏差为1.11~1.6%。本方法简单快速,消除干扰,耗材少,准确度高,可广泛应用于调味品中氯化钠含量的测定。Due to the serious interference of additives in condiments to the determination of sodium chloride content, a liquid-liquid extraction (LLE)-silver assay was established in this study to determine the content of sodium chloride. The ethyl acetate was used as extraction agent, and the content of sodium chloride was determined by eddy mixing and silver content method. Extraction condotions such as the sample pH,categories and amount of extraction solvents and extraction time were studied and optimized.The results show that under the optimal conditions, the standard recoveries were 92.8%~ 96.39%, and the relative standard deviations were 1.11%~ 1.6%. This method is simple, rapid, eliminate interference, less consumables, high accuracy, can be widely used in condiment determination of sodium chloride content.

关 键 词：液液萃取 银量法 辣椒调味品 氯化钠含量 

分 类 号：TS37[轻工技术与工程]