摘要
本文研究单柱离子色谱分离测定茶叶中微量草酸根和硫酸根的方法。样品水浸泡，酸化液。上ＳｈｉｍＰａｒｓｋＩＣ－Ａ＿２柱分离，用２．０ｍｍｏｌ·Ｌ￣（－１）Ｈ－２Ｃ＿８Ｏ＿４／１．９ｍｍｏｌ·Ｌ￣（－１）Ｔｒｉ淋洗液洗脱，电导检测器检测，检测灵敏度为１．６Ｓ／ｃｍ，最低检出限０．０５μｇ／ｍＬ；线性范围Ｌ；相对标准偏差１．０６％；平均回收车９８．７２％９７．８８／。该法简便、快速、准确、灵敏、选择性好。
method for the separation and determi-nation of trace Oxalate and Suuate in tea wasinvestigated by single- column ion chromatog-raphy,TheSamplewas5oakedin water theSolution was acidified and Separated on aC01umm ofshimParskIC+A。,Asolution of 2.0rnmol·L￣(-1)H_2C_8H_4O_4 /1. 9mmol(L￣(-1)tris wasusedas theduant.andtheduate was moni-tored by coductjvity. The detection limitS forand are 0. 15μg/mL and 0.05μg/mL respectively. The linear raTiges forand are 1～1. 0×10￣μmg /and 1～4.7 ×10￣3μg/mL respectively.The relativestandard deviations are l 03%for and1.06%for The average recoveries forand are 98.72%and 97. 88%respectively,This method has the advantages ofsimplicity、rapidity、Sensitivity and better se-lectivity.
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第4期76-79,共4页
Chinese Journal of Analysis Laboratory
关键词
离子色谱
草酸
硫酸根
茶叶
Ion chromatography
oxalic acid
sulfate:tea
