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Open Access | Published on October 23, 2023

Sensitive method for the simultaneous detection of ten azole contaminants in water samples by SPE-LC-MS/MS

Vasile Ion Iancu
Anda Gabriela Tenea
Florentina Laura Chiriac
Florinela Pirvu
Gabriel Serban
Victor Constantin Cojocaru
Gabriela Geanina Vasile
Abstract

A new analytical method was developed for the determination of azole contaminants from environmental samples (surface water, drinking water, wastewater) by solid phase extraction (SPE) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) quantification. The separation of the compounds was achieved using a Zorbax Eclipse XDB C18 chromatographic column (2.1 x 100 mm, 3.5 μm). The quantification limits varied in the range of 3.6 ng/L (ipconazole) to 8.4 ng/L (climbazole), for wastewater samples, 1.44 ng/L ÷ 3.36 ng/L for surface water samples, and 0.72 ng/L and 1.68 ng /L in drinking water, respectively. The values of the recovery percentage and the precision data obtained after applying the extraction procedure for all compounds indicated values in accordance with LC methods.

Keywords
azoles, SPE-LC-MS/MS, detection, environmental waters, validation