期刊论文

Development of rapid detection technique for potassium content in cigarette paper

中文

食品与机械

1003-5788

2022

38

6

99-105,160

10.13652/j.spjx.1003.5788.2022.60008

2020JJ40559:湖南省自然科学基金 21A0182:湖南省教育厅科学研究项目 21545010:国家自然科学基金

本校为第一机构

目的:为卷烟厂车间提供一种简单、快速测定卷烟纸中钾含量的方法.方法:采用离子选择性电极法,比较卷烟纸样品的预处理方法,比较钾离子选择电极在不同缓冲溶液中的电位响应行为.结果:钾离子选择电极在醋酸锂缓冲溶液(0.1 mol/L,pH 7.0)中具有优异的响应性能,对K+的线性响应范围为1.0×10-5～1.0×10-2 mol/L,线性响应斜率为 55.79 mV/dec(25℃),检测下限可达到2.14×10-6 mol/L.钾离子选择性电极对卷烟纸样品的日内测试平均相对标准偏差为0.55％,日间测试相对标准偏差为2.8％,均＜5％.电极方法与离子色谱法的测试结果一致,平均相对偏差为4.1％(n=10),回收率为95.0％～101.9％,在连续1周的测试过程...

Objective:A method for simple and rapid determination of potassium content in cigarette paper will be built for workshops of cigarette factory.Methods:An ion-selective electrode method was used by comparing with the pretreatment methods for cigarette paper samples and potential response behaviors of potassium ion-selective electrodes in different buffer solutions.Results:The potassium ion selective electrode possessed excellent response performance for K+in lithium acetate buffer solution(0.1 mol/L,pH 7.0)with a linear response range of 1.0×10...