GAS-CHROMATOGRAPHIC DETERMINATION OF WATER AFTER REACTION WITH TRIETHYL ORTHOFORMATE

被引：15

作者：

CHEN, J

FRITZ, JS

机构：

[1] US DOE,AMES LAB,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011

来源：

ANALYTICAL CHEMISTRY | 1991年 / 63卷 / 18期

关键词：

D O I：

10.1021/ac00018a022

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The amount of water in analytical samples is determined by reaction with an ortho ester (such as triethyl orthoformate), followed by measurement of a product of the reaction by capillary-column GC. A low concentration of methanesulfonic acid is dissolved in the reagent to catalyze the reaction. Ortho esters are shown to react more completely with water than 2,2-dimethoxypropane, which was used in a previous method. A complete determination of water, including the chromatographic separation, requires only about 5 min. Various experimental parameters are investigated to optimize the method. The amount of water was determined in a large variety of liquid and solid samples.

引用

页码：2016 / 2020

页数：5

共 16 条

[1] ACETAL FORMATION FOR KETONES AND AROMATIC ALDEHYDES WITH METHANOL [J].