Carboxylated mesoporous carbon hollow spheres for the efficient solid-phase microextraction of aromatic amines

Shixiang Chen; Zejun Yu; Wenmin Zhang; Hui Chen; Qingqing Ding; Jinhua Xu; Qidong Yu; Lan Zhang

doi:10.1039/d3an00376k

Carboxylated mesoporous carbon hollow spheres for the efficient solid-phase microextraction of aromatic amines

Analyst. 2023 May 30;148(11):2527-2535. doi: 10.1039/d3an00376k.

Authors

Shixiang Chen¹, Zejun Yu¹, Wenmin Zhang², Hui Chen¹, Qingqing Ding¹, Jinhua Xu¹, Qidong Yu¹, Lan Zhang¹

Affiliations

¹ Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China. zlan@fzu.edu.cn.
² Department of Chemical and Biological Technology, Minjiang Teachers College, Fuzhou, Fujian, 350108, China.

PMID: 37140019
DOI: 10.1039/d3an00376k

Abstract

An efficient and stable fiber coating is of great importance for solid-phase microextraction (SPME). In this study, carboxylated mesoporous carbon hollow spheres (MCHS-COOH) were developed as an efficient SPME coating of polar aromatic amines (AAs) for the first time. The MCHS-COOH coating material with high specific surface area (1182.32 m² g^-1), large pore size (10.14 nm), and rich oxygen-containing groups was fabricated via a facile H₂O₂ post-treatment. The as-prepared MCHS-COOH-coated fiber exhibited fast adsorption rate and excellent extraction properties, mainly due to its π-π interactions, hollow structure, and abundant affinity sites (carboxyl groups). Subsequently, coupled with gas chromatography-tandem mass spectrometry (GC-MS/MS), a sensitive method with low limits of detection (0.08-2.0 ng L^-1), a wide linear range (0.3-500.0 ng L^-1), and good repeatability (2.0-8.8%, n = 6) was developed for the analysis of AAs. The developed method was validated against three river water samples, with satisfactory relative recoveries being obtained. The above results demonstrated that the prepared MCHS-COOH-coated fiber exhibited good adsorption capacity, suggesting a promising application to monitor trace polar compounds in real environment.