Sodium 4-styrenesulfonate functionalized nanofibers mat as 96-well plate solid–phase extraction adsorbent for quantitative determination of multiple β-agonists residues in pork samples release_jxlvgfuznngxpa3wxe7y6uwm6e [as of editgroup_6w6cjkbvg5hslcqat564ksdqbq]

by Jiankun Cao, Sihui Liang, Hao Zhang, Qian Xu, Wenliang Ji

Published in Food Chemistry by Elsevier BV.

2020   Volume 335, p127631

Abstract

In this work, sodium 4-styrenesulfonate functionalized polyacrylonitrile nanofibers mat (SS/PAN NFM) was firstly prepared and applied as 96-well plate solid-phase extraction adsorbent for quantitative determination of seven β-agonists residues in pork samples. The functional modification endowed the SS/PAN NFM with superior adsorption performance for target β-agonists. The adsorption process is spontaneous (ΔG < 0), the initial adsorption rate can reach 6.03-9.09 mg/g/min and the maximum adsorption capacity is calculated to be 48.3 mg/g at 298 K. Moreover, SS/PAN NFM can be reused for 12 times without degradation in adsorption capability. Combined with UPLC-MS/MS, the limits of detection can reach 0.006-0.24 μg/kg, the recoveries ranged from 87.2% to 111% and the relative standard deviations of intra-day and inter-day precisions were in the scope of 1.75%-11.6% and 5.08%-13.5%, respectively. The obtained results fully demonstrated the practicability of this method in preventing the hazard of β-agonists residues.
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Type  article-journal
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Date   2020-07-25
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