Journal of chromatography. A 2013-02-01

Interferences in the direct quantification of bisphenol S in paper by means of thermochemolysis.

Valentina Becerra, Jürgen Odermatt

Index: J. Chromatogr. A. 1275 , 70-7, (2013)

Full Text: HTML

Abstract

This article analyses the interferences in the quantification of traces of bisphenol S in paper by applying the direct analytical method "analytical pyrolysis gas chromatography mass spectrometry" (Py-GC/MS) in conjunction with on-line derivatisation with tetramethylammonium hydroxide (TMAH). As the analytes are simultaneously analysed with the matrix, the interferences derive from the matrix. The investigated interferences are found in the analysis of paper samples, which include bisphenol S derivative compounds. As the free bisphenol S is the hydrolysis product of the bisphenol S derivative compounds, the detected amount of bisphenol S in the sample may be overestimated. It is found that the formation of free bisphenol S from the bisphenol S derivative compounds is enhanced in the presence of tetramethylammonium hydroxide (TMAH) under pyrolytic conditions. In order to avoid the formation of bisphenol S trimethylsulphonium hydroxide (TMSH) is introduced. Different parameters are optimised in the development of the quantification method with TMSH. The quantification method based on TMSH thermochemolysis has been validated in terms of reproducibility and accuracy.Copyright © 2012 Elsevier B.V. All rights reserved.

Related Compounds

Structure Name/CAS No. Articles
Tetramethylammonium hydroxide Structure Tetramethylammonium hydroxide
CAS:75-59-2
Tetramethyl ammonium chloride Structure Tetramethyl ammonium chloride
CAS:75-57-0
Tetramethylammonium bromide Structure Tetramethylammonium bromide
CAS:64-20-0
Trimethylsulfonium iodide Structure Trimethylsulfonium iodide
CAS:2181-42-2
Tetramethylammonium Hydroxide Pentahydrate Structure Tetramethylammonium Hydroxide Pentahydrate
CAS:10424-65-4
Tetramethylammonium Sulfate Structure Tetramethylammonium Sulfate
CAS:14190-16-0
4,4'-Sulfonyldiphenol Structure 4,4'-Sulfonyldiphenol
CAS:80-09-1
N,N,N-Trimethylmethanaminium fluoride Structure N,N,N-Trimethylmethanaminium fluoride
CAS:373-68-2