AbstractA simple, sensitive and rap

Abstract
A simple, sensitive and rapid ion-exclusion chromatographic method for the simultaneous separation of carbonic acid and short chain organic acids (formic acid, acetic acid, and propionic acid) has been developed. A weakly acidic cation exchange resin column TSKgel OApak-A was used for the separation; pure water, owing to its lower background conductance, was employed as eluent in order to obtain high detection sensitivity. A good separation of these weak acids was achieved in 16 min. The linear range of the peak area calibration curve for carbonic acid was from 3.0 mg/L to 500 mg/L. The conductivity detection limit calculated at S/N = 3 was 0.084 mg/L for carbonic acid. The method developed in this work was successfully applied to the determination of carbonic acid in several environmental water samples without any pretreatment.

Results (English) 3:

摘要
简单，对于碳酸和短链有机酸分离快速、灵敏的离子排斥色谱法（甲酸，乙酸，丙酸）已开发。一种弱酸性阳离子交换树脂柱TSKgel OApak-A用于分离；纯净水，由于它的低背景电导，作为洗脱剂，为了获得较高的检测灵敏度。一个好的弱酸分离取得16分钟碳酸的峰面积校正曲线的线性范围为3毫克/升500毫克/ L的电导率检测极限的S / N = 3为0.084毫克/升碳酸计算。方法在这项工作中成功地应用在一些环境水中碳酸测定无任何预处理。