FLOW-INJECTION DETERMINATION OF WATER IN ORGANIC-SOLVENTS BY NEAR-INFRARED SPECTROMETRY

被引：26

作者：

GARRIGUES, S ^{[1
]}

GALLIGNANI, M ^{[1
]}

DELAGUARDIA, M ^{[1
]}

机构：

[1] UNIV VALENCIA,DEPT ANALYT CHEM,50 DR MOLINER ST,E-46100 BURJASSOT,SPAIN

来源：

ANALYTICA CHIMICA ACTA | 1993年 / 281卷 / 02期

关键词：

FLOW INJECTION; INFRARED SPECTROMETRY; DICHLOROMETHANE; ISOBUTYL METHYL KETONE; ORGANIC SOLVENTS; WATERS;

D O I：

10.1016/0003-2670(93)85180-R

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A flow-injection (FI) procedure was developed for the direct determination Of Water in organic solvents by using the O-H stretch absorbance band of water in the near-infrared (NIR) region. Dichloromethane was employed as a test solvent to study the influence of the flow parameters (carrier flow and sample injection volume) and time interval on the sensitivity and repeatability of the FI-NIR measurements. The developed procedure permits the determination of water in dichloromethane and isobutyl methyl ketone samples with limits of detection of 0.01 and 0.005% (v/v), respectively. Real and spiked samples of solvents were analysed by FI-NIR and accurate results were found. The method is rapid, it does not require any pretreatment of samples and it is free from contamination of samples by atmospheric humidity .

引用

页码：259 / 264

页数：6

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