Determination of halonitromethanes and haloacetamides: an evaluation of sample preservation and analyte stability in drinking water

Journal of Chromatography. a
Deborah LiewJeffrey W A Charrois

Abstract

Simultaneous quantitation of 6 halonitromethanes (HNMs) and 5 haloacetamides (HAAms) was achieved with a simplified liquid-liquid extraction (LLE) method, followed by gas chromatography-mass spectrometry. Stability tests showed that brominated tri-HNMs immediately degraded in the presence of ascorbic acid, sodium sulphite and sodium borohydride, and also reduced in samples treated with ammonium chloride, or with no preservation. Both ammonium chloride and ascorbic acid were suitable for the preservation of HAAms. Ammonium chloride was most suitable for preserving both HNMs and HAAms, although it is recommended that samples be analysed as soon as possible after collection. While groundwater samples exhibited a greater analytical bias compared to other waters, the good recoveries (>90%) of most analytes in tap water suggest that the method is very appropriate for determining these analytes in treated drinking waters. Application of the method to water from three drinking water treatment plants in Western Australia indicating N-DBP formation did occur, with increased detections after chlorination. The method is recommended for low-cost, rapid screening of both HNMs and HAAms in drinking water.

References

Mar 23, 2011·Journal of Chromatography. a·I MontesinosM Gallego

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Citations

Jan 12, 2016·Environmental Science & Technology·Daniel L McCurryWilliam A Mitch
Dec 20, 2014·Journal of Chromatographic Science·Tae Hwan KimSun Dong Yoo
Aug 16, 2016·Environmental Monitoring and Assessment·Deborah LiewCynthia A Joll
Jun 8, 2013·Environmental Science. Processes & Impacts·Huanhuan DingMin Yang
Aug 9, 2019·Environmental Science and Pollution Research International·Rhys A A CarterCynthia A Joll
Oct 15, 2021·Environmental Science and Pollution Research International·Yuye LuoMeiqi Zhao

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