Issue 48, 2020

Application of a new adhesive elastomeric coating and hydrophilic–lipophilic-balanced sorbent for modified stir-bar sorptive extraction

Abstract

A new polyurethane adhesive was evaluated to fix a hydrophilic–lipophilic-balanced sorbent and to produce modified stir-bars. It presented high mechanical and chemical resistance, indicating that it is an adequate adhesive. The homemade bars were employed to determine bisphenol A, diclofenac, ibuprofen and triclosan in aqueous medium. Satisfactory figures of merit were observed, with LOD between 0.06 and 0.30 ng mL−1 and enrichment factors between 133 and 195 times, using an extraction time of 2 h. The stir-bars were employed to determine the four analytes in water samples, presenting recovery results from 53 to 135% and RSD between 0.7 and 20%. In general, the results observed here indicated that the adhesive is an appropriate alternative material to fix HLB particles, and could probably be applied to other sorbents.

Graphical abstract: Application of a new adhesive elastomeric coating and hydrophilic–lipophilic-balanced sorbent for modified stir-bar sorptive extraction

Article information

Article type
Paper
Submitted
21 Mha 2020
Accepted
30 Nhl 2020
First published
31 Nhl 2020

Anal. Methods, 2020,12, 5815-5822

Application of a new adhesive elastomeric coating and hydrophilic–lipophilic-balanced sorbent for modified stir-bar sorptive extraction

N. A. Teixeira, D. M. S. Miyazaki, M. T. Grassi, S. F. Zawadzki and G. Abate, Anal. Methods, 2020, 12, 5815 DOI: 10.1039/D0AY01594F

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