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Determination of tributyltin in marine sediment and waters by pressurised solvent extraction and liquid chromatography-tandem mass spectrometry

journal contribution
posted on 2023-05-17, 21:52 authored by David NicholsDavid Nichols, Jordan, TB, Kerr, N
In this study tributyltin (TBT) was extracted from marine sediment matrix with the use of Pressurised solvent extraction (PSE), which uses high temperature and pressure conditions to increase extraction efficiency. The analyte was chromatographically resolved using an liquid chromatography tandem mass spectrometry (LC-MS/MS) system with a pentafluorophenyl (PFP) column and a methanol/aqueous formic acid mobile phase gradient, and was detected by MS/MS as product fragments after collisionally induced dissociation (CID) of the cationic parent molecule. This study represents the first application of PSE extraction combined with LC-MS/MS analysis for the determination of TBT in sediments. The method has been validated according to the International Organisation for Standardisation (ISO) 17025:2001 and affords automated extraction of sediment samples with high sensitivity analysis. The full method limit of detection was established as 1.25 ng Sn g-1 with an instrument detection limit of 0.01 ng Sn g-1. The chromatographic procedure may also be applied for the direct analysis of water matrices without the need for sample manipulation, and therefore represents a combined analytical approach for the monitoring of TBT contamination in marine or estuarine ecosystems.

History

Publication title

Analytical and Bioanalytical Chemistry

Volume

406

Issue

12

Pagination

2993-2998

ISSN

1618-2642

Department/School

School of Natural Sciences

Publisher

Springer-Verlag Heidelberg

Place of publication

Tiergartenstrasse 17, Heidelberg, Germany, D-69121

Rights statement

Copyright 2014 Springer-Verlag Berlin Heidelberg

Repository Status

  • Restricted

Socio-economic Objectives

Coastal and estuarine systems and management not elsewhere classified

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