Analysis of Semi-Volatile Aromatic Chlorinated Acids in Drinking Water by Liquid-Solid Extraction GC/MS

Abstract

An analytical procedure utilizing solid phase extraction with octadecylsilane bonded to silica (C₁₈) cartridges combined with gas chromatography/mass spectrometry (GC/MS) was developed to analyze semi-volatile chlorinated acids found in drinking water. A system has been designed which will enable the analysis of this class of compounds with minimum sample manipulation and detection limits in the low ng/L range. The overall accuracy and precision were comparable to other methods used for compliance purposes. Among the advantages of the developed methodology are its applicability for field sampling and at the same time, provides a simple and inexpensive mean for sample preservation.