4.7 Article

A multi-residue method for determining twenty-four endocrine disrupting chemicals in vegetables and fruits using ultrasound-assisted solid-liquid extraction and continuous solid-phase extraction

期刊

CHEMOSPHERE
卷 263, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.128158

关键词

Ultrasound-assisted extraction; Continuous SPE; GC-MS; Endocrine disrupting chemicals; Vegetables and fruits

资金

  1. Consejeria de Economia, Conocimiento, Empresas y Universidad (Junta de Andalucia, Spain) - Fondo Europeo de Desarrollo Regional (FEDER, European Union) funds [P18-RT-1211]

向作者/读者索取更多资源

An analytical approach using ultrasound-assisted extraction, continuous solid-phase extraction, and GC-MS detection was developed for simultaneous determination of 24 endocrine disrupting chemicals in vegetable and fruit samples. Most samples were found to contain multiple analytes.
In this work, we developed an analytical approach using an ultrasound-assisted extraction (UAE) followed by continuous solid-phase extraction (SPE) and gas chromatography-mass spectrometry (GC-MS) detection in order to determine simultaneously 24 endocrine disrupting chemicals such as alkylphenols, organophosphorus pesticides, parabens, phenylphenols, triclosan and bisphenol A in vegetable and fruit samples. Different variables influencing UAE and SPE performance were optimized in order to maximize removal of the sample matrix and preconcentration of the analytes. The optimized extraction and GC-MS quantitation conditions provided acceptable sensitivity, selectivity, accuracy and precision. Limits of detection spanned the range 0.6-25 ng kg(-1), recoveries were near-quantitative and relative standard deviations ranged from 4.5 to 7.6%. The proposed method was used to analyse 11 vegetable samples and 7 fruit samples purchased at various Spanish and Moroccan supermarkets. Most samples contained more than three of the analytes, at levels between 5.8 and 580 ng kg(-1). (C) 2020 Elsevier Ltd. All rights reserved.

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