Amino-functionalized graphene oxide/neutral alumina nanocomposite based solid-phase extraction coupled with ion chromatography-mass spectrometry for the determination of trace haloacetic acids in drinking water

2017 ◽  
Vol 9 (16) ◽  
pp. 2425-2432 ◽  
Author(s):  
Zhixiong Zhong ◽  
Gongke Li ◽  
Yijuan Shao ◽  
Binghui Zhu ◽  
Zhe Liu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Drinking Water ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Haloacetic Acids ◽  
Phase Extraction ◽  
Functionalized Graphene ◽  
Neutral Alumina ◽  
Functionalized Graphene Oxide

An efficient solid-phase extraction strategy was developed for the extraction and enrichment of ten haloacetic acids from drinking water.

scholarly journals Ultratrace-level determination of N-Nitrosodimethylamine, N-Nitrosodiethylamine, and N-Nitrosomorpholine in waters by solid-phase extraction followed by liquid chromatography-tandem mass spectrometry

2014 ◽  
Vol 12 (9) ◽  
pp. 928-936 ◽  
Author(s):  
Yassine Kadmi ◽  
Lidia Favier ◽  
Isabelle Soutrel ◽  
Marguerite Lemasle ◽  
Dominique Wolbert
Keyword(s):  
Mass Spectrometry ◽  
Drinking Water ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Solid Phase Extraction ◽  
Analytical Method ◽  
Solid Phase ◽  
Tandem Mass ◽  
Phase Extraction

AbstractN-nitrosamines are a new class of emerging nitrogenous drinking water disinfection by-products. These compounds are probably carcinogenic which could seriously affect the safety of drinking water consumers. The aim of this study is to develop a simple, fast, and specific analytical method for the routine determination of low part per trillion levels of N-nitrosamines in waters. An ultra high pressure liquid chromatography coupled with tandem mass spectrometry (UHPLC/MS/MS) method was developed for the qualitative and quantitative analysis of N-nitrosamines in waters. N-nitrosamines were extracted, purified and concentrated from water samples in one step using a solid-phase extraction (SPE). The compounds were detected in multiple reaction monitoring via electrospray ionisation source with positive ionisation mode. To achieve symmetrical peak shapes and a short chromatographic analysis time, the mobile phase consisting of acetonitrile, water and formic acid (60:40:0.1, v/v/v) was used in the experiment. Chromatographic separation of N-nitrosamines was done in less than two minutes. All calibration curves had good linearity (r2≥ 0.9989). The intra- and inter-day precision of the assay ranged from 0.59% to 3.11% and accuracy ranged from 99.66% to 104.1%. The mean recoveries of N-nitrosamines in spiked water were 98%-101%. The reproducability was acceptable with relative standard deviations of less than 3.53%. The proposed method yielded detection limits very low which ranges from 0.04 to 0.16 ng L−1. Finally, the developed analytical method was successfully applied to the analysis of N-nitrosamines in natural water sample

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