The University of Southampton
University of Southampton Institutional Repository

Quantitative UHPSFC-MS analysis of elemental sulfur in mineral oil via derivatization with triphenylphosphine: Application to corrosive sulfur-related power transformer failure

Quantitative UHPSFC-MS analysis of elemental sulfur in mineral oil via derivatization with triphenylphosphine: Application to corrosive sulfur-related power transformer failure
Quantitative UHPSFC-MS analysis of elemental sulfur in mineral oil via derivatization with triphenylphosphine: Application to corrosive sulfur-related power transformer failure
An ultrahigh-performance supercritical fluid chromatography−mass spectrometry (UHPSFC-MS) method has been developed as a rapid and reliable analytical method for the detection and quantification of elemental sulfur in mineral transformer oil. The method described in this paper is based on the selective reaction of elemental sulfur with triphenylphosphine (TPP). The derivatization of the elemental sulfur requires minimal sample preparation and resulted in the formation of a single compound, namely triphenylphosphine sulfide (TPPS). This derivative is quantified from the complex oil composition using electrospray ionization-mass spectrometry (ESI-MS) in selected ion monitoring (SIM) mode, and the reported UHPSFC-MS method allows detection and quantification of the derivative at ppb levels. As sulfur contamination in mineral transformer oil has been linked to costly failures of oil/paper-based power transformers due to corrosion, the analytical approach is demonstrated through its application to mineral oil samples from in service and decommisioned power transformers. The method is ideal as a routine test or to confirm the presence of elemental sulfur in samples where corrosion has occurred.
0003-2654
Garcia, Sergio Barata
794abc3c-d43d-49ce-ae15-d622bcb3ca2f
Herniman, Julie
530b1a36-1386-4602-8df7-defa6eb3512b
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Pilgrim, James
21873b25-6799-4abe-bbc5-27f0a4453bc7
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilson, Gordon
fd02d259-a5b6-44ce-be29-47073c552c5b
Langley, G. John
7ac80d61-b91d-4261-ad17-255f94ea21ea
Brown, Richard C.D.
21ce697a-7c3a-480e-919f-429a3d8550f5
Garcia, Sergio Barata
794abc3c-d43d-49ce-ae15-d622bcb3ca2f
Herniman, Julie
530b1a36-1386-4602-8df7-defa6eb3512b
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Pilgrim, James
21873b25-6799-4abe-bbc5-27f0a4453bc7
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Wilson, Gordon
fd02d259-a5b6-44ce-be29-47073c552c5b
Langley, G. John
7ac80d61-b91d-4261-ad17-255f94ea21ea
Brown, Richard C.D.
21ce697a-7c3a-480e-919f-429a3d8550f5

Garcia, Sergio Barata, Herniman, Julie, Birkin, Peter R., Pilgrim, James, Lewin, Paul, Wilson, Gordon, Langley, G. John and Brown, Richard C.D. (2020) Quantitative UHPSFC-MS analysis of elemental sulfur in mineral oil via derivatization with triphenylphosphine: Application to corrosive sulfur-related power transformer failure. Analyst. (doi:10.1039/D0AN00602E). (In Press)

Record type: Article

Abstract

An ultrahigh-performance supercritical fluid chromatography−mass spectrometry (UHPSFC-MS) method has been developed as a rapid and reliable analytical method for the detection and quantification of elemental sulfur in mineral transformer oil. The method described in this paper is based on the selective reaction of elemental sulfur with triphenylphosphine (TPP). The derivatization of the elemental sulfur requires minimal sample preparation and resulted in the formation of a single compound, namely triphenylphosphine sulfide (TPPS). This derivative is quantified from the complex oil composition using electrospray ionization-mass spectrometry (ESI-MS) in selected ion monitoring (SIM) mode, and the reported UHPSFC-MS method allows detection and quantification of the derivative at ppb levels. As sulfur contamination in mineral transformer oil has been linked to costly failures of oil/paper-based power transformers due to corrosion, the analytical approach is demonstrated through its application to mineral oil samples from in service and decommisioned power transformers. The method is ideal as a routine test or to confirm the presence of elemental sulfur in samples where corrosion has occurred.

Text
D0AN00602E - Accepted Manuscript
Restricted to Repository staff only until 12 June 2021.
Request a copy
Text
Quantitative UHPSFC-MS analysis - Version of Record
Available under License Creative Commons Attribution.
Download (803kB)

More information

Accepted/In Press date: 12 June 2020

Identifiers

Local EPrints ID: 441832
URI: http://eprints.soton.ac.uk/id/eprint/441832
ISSN: 0003-2654
PURE UUID: d568d369-d5e5-4a4c-9856-02aa0b7b40b4
ORCID for Julie Herniman: ORCID iD orcid.org/0000-0003-4834-1093
ORCID for Peter R. Birkin: ORCID iD orcid.org/0000-0002-6656-4074
ORCID for G. John Langley: ORCID iD orcid.org/0000-0002-8323-7235
ORCID for Richard C.D. Brown: ORCID iD orcid.org/0000-0003-0156-7087

Catalogue record

Date deposited: 29 Jun 2020 16:33
Last modified: 30 Jun 2020 00:27

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×