High-Speed Analysis of 9 HaloaceticAcids in Tap WaterUsing Triple Quadrupole LC/MS/MS

User Benefits

- Analysis is possible in only 15 minutes thanks to simple sample preparation requiring only dechlorination. - In addition to 3 items listed in drinking water quality standards, simultaneous analysis of 6 bromine-containing haloacetic acids is also possible. - Analysis with higher sensitivity is possible at concentrations at or below 1/10 of the standard value and 1/2 of the target value.

Introduction

Haloacetic acids (HAAs) in tap water are widely known as disinfection byproducts formed by chlorination in the water purification process. At present, Japan’s Drinking Water Quality Standards list 3 HAAs (monochloroacetic acid, dichloroacetic acid, trichloroacetic acid) under items subject to Drinking Water Quality Standards, and 6 (bromochloroacetic acid, bromodichloroacetic acid, dibromochloroacetic acid, monobromoacetic acid, dibromoacetic acid, tribromoacetic acid) as Items for Further Study. These substances are measured and considered in water quality management. The solvent-extraction GC/MS method and the LC/MS method, which enables direct measurement, are provided as inspection methods for the 3 drinking water quality standard items. However, the LC/MS method is now widely used with the aim of improving analysis efficiency, as sample preparation is simple. An example of measurement of the 9 HAAs was introduced in Application News No. C89. This article introduces results in which a satisfactory validity evaluation was obtained under high-speed analysis conditions with an analysis time of 15 min.

December 10, 2020 GMT