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Molecules 2014, 19(1), 1212-1222; doi:10.3390/molecules19011212

Simultaneous Determination of 24 Antidepressant Drugs and Their Metabolites in Wastewater by Ultra-High Performance Liquid Chromatography–Tandem Mass Spectrometry

1
College of Resources and Environment, Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
2
National Institute of Metrology, Beijing 100013, China
3
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
*
Authors to whom correspondence should be addressed.
Received: 7 November 2013 / Revised: 14 January 2014 / Accepted: 15 January 2014 / Published: 20 January 2014
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Abstract

Antidepressants are a new kind of pollutants being increasingly found in wastewater. In this study, a fast and sensitive ultra-high performance liquid chromatography-tandem mass spectrometry method was developed and validated for the analysis of 24 antidepressant drugs and six of their metabolites in wastewater. This is the first time that the antidepressant residues in wastewater of Beijing (China) were systematically reported. A solid-phase extraction process was performed with 3 M cation disk, followed by ultra-high performance liquid chromatography–tandem mass spectrometry measurements. The chromatographic separation and mass parameters were optimized in order to achieve suitable retention time and good resolution for analytes. All compounds were satisfactorily determined in one single injection within 20 min. The limit of quantification (LOQ), linearity, and extraction recovery were validated. The LOQ for analytes were ranged from 0.02 to 0.51 ng/mL. The determination coefficients were more than 0.99 within the tested concentration range (0.1–25 ng/mL), and the recovery rate for each target compound was ranged from 81.2% to 118% at 1 ng/mL. This new developed method was successfully applied to analysis the samples collected from Beijing municipal wastewater treatment plants. At least ten target antidepressants were found in all samples and the highest mean concentration of desmethylvenlafaxin was up to 415.6 ng/L. View Full-Text
Keywords: pharmaceuticals; antidepressants drug; solid phase extraction; wastewater treatment plants pharmaceuticals; antidepressants drug; solid phase extraction; wastewater treatment plants
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Sheng, L.-H.; Chen, H.-R.; Huo, Y.-B.; Wang, J.; Zhang, Y.; Yang, M.; Zhang, H.-X. Simultaneous Determination of 24 Antidepressant Drugs and Their Metabolites in Wastewater by Ultra-High Performance Liquid Chromatography–Tandem Mass Spectrometry. Molecules 2014, 19, 1212-1222.

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