Issue 7, 2021

Preparation of functional magnetic porous organic polymer as sorbent for mercury speciation followed by HPLC-ICP-MS analysis

Abstract

A novel sulfur-containing functional core–shell magnetic porous organic polymer (Fe3O4@BD-TpMA-S-SH MOP) was synthesized as a magnetic solid-phase extraction (MSPE) sorbent for mercury speciation followed by high-performance liquid chromatography (HPLC)-inductively coupled plasma mass spectrometry (ICP-MS) detection. The prepared Fe3O4@BD-TpMA-S-SH MOP possessed rich active adsorption sites (S: 25 wt%), high magnetism (39.2 emu g−1) and high adsorption capacity (636, 656, 649 and 366 mg g−1 for Hg2+, methylmercury (MeHg+), ethylmercury (EtHg+) and phenylmercury (PhHg+), respectively). Under the optimal conditions, the limit of detection (LOD) of the developed MSPE-HPLC-ICP-MS method was 0.43, 0.55, 0.69 and 1.1 ng L−1 for Hg2+, MeHg+, EtHg+ and PhHg+, respectively, with a high enrichment factor (EF) in the range of 346–383-fold. The accuracy of the method was validated, and it was successfully applied for trace/ultratrace mercury speciation in environmental water and fish samples. The developed method has high sensitivity, low LOD, high EF, fast adsorption/desorption dynamics and good matrix resistance ability, showing great applicability in real sample analysis with complex sample matrices.

Graphical abstract: Preparation of functional magnetic porous organic polymer as sorbent for mercury speciation followed by HPLC-ICP-MS analysis

Supplementary files

Article information

Article type
Paper
Submitted
20 Jan 2021
Accepted
08 Jun 2021
First published
08 Jun 2021

J. Anal. At. Spectrom., 2021,36, 1568-1575

Preparation of functional magnetic porous organic polymer as sorbent for mercury speciation followed by HPLC-ICP-MS analysis

Y. He, M. He, B. Chen and B. Hu, J. Anal. At. Spectrom., 2021, 36, 1568 DOI: 10.1039/D1JA00019E

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