测定饮用水中低微克每升浓度的短链脂肪酸、含氧酸和羟基酸。

Determination of short-chain aliphatic, oxo- and hydroxy-acids in drinking water at low microgram per liter concentrations.

作者信息

Peldszus S, Huck P M, Andrews S A

机构信息

Department of Civil Engineering, University of Waterloo, Ontario, Canada.

出版信息

J Chromatogr A. 1996 Feb 2;723(1):27-34. doi: 10.1016/0021-9673(95)00838-1.

DOI:10.1016/0021-9673(95)00838-1

PMID:8819819

Abstract

A fast and reliable ion chromatography method has been developed and applied to study the formation and consumption of organic acid ozonation by-products in a drinking water treatment plant. Water samples are injected directly into the ion chromatograph using a large sample loop (740 mu l) without any sample preparation step other than possibly filtration. Organic and inorganic anions are determined by separation on a high-capacity anion-exchange column followed by conductivity detection. The average recovery for the organic acids investigated (beta-hydroxybutyric, acetic, glycolic, butyric, formic, alpha-ketobutyric and pyruvic acid) ranged from 96 to 105%, and their method detection limits ranged from 1 to 5 mu g/l. When applied to samples taken from a drinking water treatment plant, the method proved to be reliable.

摘要

已开发出一种快速可靠的离子色谱法，并应用于研究饮用水处理厂中有机酸臭氧化副产物的形成和消耗情况。水样使用大进样环（740 μl）直接注入离子色谱仪，除了可能的过滤外无需任何样品制备步骤。有机和无机阴离子通过在高容量阴离子交换柱上分离，然后进行电导检测来测定。所研究的有机酸（β-羟基丁酸、乙酸、乙醇酸、丁酸、甲酸、α-酮丁酸和丙酮酸）的平均回收率在96%至105%之间，其方法检测限在1至5 μg/l之间。当应用于取自饮用水处理厂的样品时，该方法被证明是可靠的。