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Simultaneous quantitative analysis of Ni, VO, Cu, Zn and Mn geoporphyrins by liquid chromatography-high resolution multistage mass spectrometry: Method development and validation
Authors
Baker
Baker
+79 more
Baker
Barwise
Biesaga
Bonnett
Bonnett
Bonnett
Boreham
Boreham
Boreham
Boreham
Boreham
Boreham
Boreham
Boreham
Boucher
Buchler
Buchler
Buchler
Buchler
Cho
Chris J. Boreham
Davis
Dennis
Eckardt
Ekstrom
Filby
Fleischer
Gibbison
Greenwood
Grice
Grice
Grice
Grice
Hoard
Jaraula
John Walshe
Junium
Junium
Kashiyama
Keely
Keely
Keely
Kliti Grice
Kump
Liu
Lorenz Schwark
Martijn Woltering
Mawson
McKenna
McKenna
Nabbefeld
Ocampo
Ocampo
Ocampo
Palmer
Piomelli
Putman
Qian
Qian
Quirke
Riley
Rodgers
Rosell-Melé
Rosell-Melé
Schwark
Spikes
Summons
Sundararaman
Sundararaman
Sundararaman
Svenja Tulipani
Thomas
Totterdell
Treibs
Tulipani
van Staden
Verne-Mismer
Xu
Zerner
Publication date
1 January 2016
Publisher
'Elsevier BV'
Doi
Cite
Abstract
© 2016 Elsevier B.V. A method is described for the identification and quantification of Cu, Ni, VO, Zn and Mn metalloporphyrins in geological samples using a high performance liquid chromatography (HPLC) system coupled to a high resolution Thermo Orbitrap XL mass spectrometer (MS). The linear correlation of the detector response to the compound concentrations in Cu, Ni, VO, Zn and Mn porphyrin standards (R2 values between 0.9975 and 0.9994), verified the suitability of the methodology for the quantification of these compounds. Furthermore, the method was validated by the analysis of complex porphyrin distributions in geological sample isolates from the Australian Toolebuc Formation and Bight Basin. By using the high resolution of the Orbitrap MS detector it was not only possible to reproduce the porphyrin distributions reported from previous analyses of the same isolates, but also to identify and resolve a range of additional compounds such as an iso-butyl C34 VO porphyrin indicative of palaeoenvironmental photic zone euxinia and several Cu and Zn porphyrins. The methodology described here provides a new high resolution tool for routine analysis of complex metalloporphyrin distributions in geological sample extracts, enabling the simultaneous quantitative analysis of Cu, Ni, VO, Zn and Mn porphyrins without the need of prior de-metalation or further fractionation of the porphyrin extract. The high resolution of the Orbitrap MS combined with the ability to perform multistage mass spectrometry leads to a significant improvement in compound detection and identification, which shows a high potential in the analysis of low abundance porphyrins, such as high-molecular-weight porphyrins with extended alkyl side-chains
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info:doi/10.1016%2Fj.chemgeo.2...
Last time updated on 01/11/2020
espace@Curtin
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Last time updated on 18/04/2019