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Research Article

Development and application of a sustainable approach for the determination of 95 pharmaceutical substances and metabolites in urban wastewater by means of ultra-high-performance liquid-chromatography-tandem mass spectrometry

, , , , , & show all
Received 22 Dec 2023, Accepted 18 Feb 2024, Published online: 26 Feb 2024
 

ABSTRACT

In the last few years, the interest in pharmaceutical drugs and their metabolites as environmental pollutants is gaining growing importance. Regular monitoring and timely actions are decisive to implement appropriate water resource management strategies and to evaluate the efficiency of traditional or innovative wastewater treatment plants (WWTPs). This study describes the development and validation of an analytical procedure using 10 mL sample volume followed by direct-injection in ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) for the simultaneous determination of 95 pharmaceutical drugs and 10 of their main metabolites in wastewater. Adequate sensitivity was recorded for all target analytes, with limits of detection below 5 ng/L for 60 out of 95 analytes and recoveries exceeding 80% for all the analytes under study. A total of 42 target analytes were detected in almost all sites, and limited differences were observed among several pharmaceutical drug arrays found at different sampling sites. In addition, an abatement yield higher than 50% was observed for only 12 of the 42 detected substances. The procedure, which combined direct injection and small sample volume collection, showed great potential and efficiency for the high-performance determination of pharmaceutical drugs in wastewater.

Acknowledgments

EA, MM, MV and AS acknowledge support from the Project CH4.0 under the MUR programme “Dipartimenti di Eccellenza 2023–2027” (CUP: D13C22003520001).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Supplementary material

Supplemental data for this article can be accessed online at https://doi.org/10.1080/03067319.2024.2322098

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