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Fast trace determination of nine odorant and estrogenic chloro- and bromo-phenolic compounds in real water samples through automated solid-phase extraction coupled with liquid chromatography tandem mass spectrometry

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Abstract

A fast and reliable method was developed for simultaneous trace determination of nine odorous and estrogenic chloro- and bromo-phenolic compounds (CPs and BPs) in water samples using solid-phase extraction (SPE) coupled with liquid chromatography tandem mass spectrometry (LC-MS/MS). For sample preparation, the extraction efficiencies of two widely applied cartridges Oasis HLB and Sep-Pak C18 were compared, and the Oasis HLB cartridge showed much better extraction performance; pH of water sample also plays important role on extraction, and pH = 2–3 was found to be most appropriate. For separation of the target compounds, small addition of ammonium hydroxide can obviously improve the detection sensitivity, and the optimized addition concentration was determined as 0.2%. The developed efficient method was validated and showed excellent linearity (R 2 > 0.995), low limit of detection (LOD, 1.9–6.2 ng/L), and good recovery efficiencies of 57–95% in surface and tap water with low relative standard deviation (RSD, 1.3–17.4%). The developed method was finally applied to one tap and one surface water samples and most of these nine targets were detected, but all of them were below their odor thresholds, and their estrogen equivalent (EEQ) were also very low.

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Funding

This work was financially supported by the Program for National Natural Science Foundation of China (No. 21577040; No. 21107025; U1501234; No. 41330639) and special funds for public welfare research and capacity building in Guangdong Province (No. 2015A020215003); Science and Technology Program of Guangzhou, China (No.201510010162), as well as the funding for network platform construction on odorous compounds in water (No. YGSYBMKY17-N11).

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Correspondence to Ze-hua Liu.

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Responsible editor: Ester Heath

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Yuan, Sf., Liu, Zh., Lian, Hx. et al. Fast trace determination of nine odorant and estrogenic chloro- and bromo-phenolic compounds in real water samples through automated solid-phase extraction coupled with liquid chromatography tandem mass spectrometry. Environ Sci Pollut Res 25, 3813–3822 (2018). https://doi.org/10.1007/s11356-017-0816-2

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  • DOI: https://doi.org/10.1007/s11356-017-0816-2

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  1. Ze-hua Liu