A fast and simple air-assisted liquid-liquid microextraction procedure for the simultaneous determination of bisphenols, parabens, benzophenones, triclosan, and triclocarban in human urine by liquid chromatography-tandem mass spectrometry

Author(s)

Rocha, Bruno Alves ^[1] ; Moraes de Oliveira, Anderson Rodrigo ^[2] ; Barbosa, Jr., Fernando ^[1]

Affiliation

^[1] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Lab Toxicol & Essencialidade Metais, BR-14049903 Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14049901 Ribeirao Preto, SP - Brazil

• Document type: Journal article
• Source: Talanta; v. 183, p. 94-101, JUN 1 2018.
• Web of Science Citations: 20

Abstract

The increasing awareness and public concern with hazard exposure to endocrine-disrupting chemicals calls for methods capable to handle numerous samples in short analysis time. In this present study, a novel method combining air-assisted liquid-liquid microextraction and liquid chromatography coupled to mass spectrometry was developed and validated for the extraction, preconcentration, and determination of 7 bisphenols (bisphenol A, bisphenol S, bisphenol AP, bisphenol P, bisphenol F, bisphenol AF, bisphenol Z), 7 parabens (methyl-, ethyl-, propyl-, butyl-, benzyl-paraben, methyl-protocatechuic acid, and ethyl-protocatechuic acid), 5 benzophenones (benzophenone-1, benzophenone-2, benzophenone-3, benzophenone-8, and 4-hydroxybenzophenone), and two antimicrobials (triclosan and triclocarban) in human urine samples. Type and volume of solvent, extraction time (cycles), pH sample, ionic strength, agitation, and needle dimensions were evaluated. The matrix-matched calibration curves of all analytes were linear with correlation coefficients higher than 0.99 in the range level of 1.0-20.0 ng(-1). The relative standard deviation, precision, at three concentrations (1.0, 10.0 and 20.0 ng mL(-1)) was lower than 15% with accuracy ranging from 90% to 114%. The biomonitoring capability of the new proposed method was confirmed with the analysis of 50 human urine samples randomly collected from Brazilian children. High urinary concentrations of several EDCs associated with usage of personal care products were found. (AU)

• FAPESP's process: 13/23710-3 - The use of Shpol'skii spectroscopy and LC-MS/MS for determination of bisphenol A and analogues in urine samples and exposure assessment in children living in the São Paulo State, Brazil
• Grantee: Bruno Alves Rocha
• Support Opportunities: Scholarships in Brazil - Post-Doctoral