Detection and study of adsorbable organic halogens in disinfection by-products of drinking water

Abstract

Abstract: Objective To establish a method for determining the levels of adsorbable organic chlorine（AOCl）,adsorbable organic bromine（AOBr）,and adsorbable organic iodine（AOI） in disinfection by-products of drinking water. Methods The organic substances in water were adsorbed by acti-vated carbon,then converted into hydrogen halides through high-temperature pyrolysis and dissolved in water,followed by the determination of AOCl using ion chromatography（IC）,AOBr and AOI by inductively coupled plasma-mass spectrometry（ICP-MS）. Results The linear ranges for AOCl,AOBr and AOI in drinking water were 10-100,0.1-30.0,and 0.01-5.00 μg/L,respectively,with linear correlation coefficients（r）>0.99.Detection limits were established at 2.5 μg/L for AOCl,0.02 μg/L for AOBr,and 0.002 μg/L for AOI,with quantitation limits correspondingly set at 8.14,0.08,and 0.007 μg/L.The spiked recovery rates were 87%-110%,79%-105%,and 92%-109%,respectively. Conclusion This method has operational simplicity,low detection limits,exceptional precision,and superior recovery performance,andis suitable for both qualitative and quantitative analysis of AOCl,AOBr and AOI in disinfection by-products of drinking water.

Key words: Drinking water, Disinfection by-products, Adsorbable organic halogens

CLC Number:

R123.1

XI Ye, HU Yan, XIANG Jiangying, ZHANG Ye, ZHAO Yijing, ZHAN Ming. Detection and study of adsorbable organic halogens in disinfection by-products of drinking water. [J]OCCUPATION AND HEALTH, 2025, 41(14): 1896-1901.

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