Compound‐specific stable carbon isotope ratios (δ 13 C values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1)
Abstract Compound‐specific isotope analysis using gas chromatography interfaced to isotope ratio mass spectrometry (GC/IRMS) was applied for the determination of δ 13 C values of the marine halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1). The δ 13 C value of a...
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crwiley:10.1002/rcm.2686 2024-06-02T07:57:46+00:00 Compound‐specific stable carbon isotope ratios (δ 13 C values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1) Vetter, Walter Gleixner, Gerd 2006 http://dx.doi.org/10.1002/rcm.2686 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frcm.2686 https://onlinelibrary.wiley.com/doi/full/10.1002/rcm.2686 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Rapid Communications in Mass Spectrometry volume 20, issue 20, page 3018-3022 ISSN 0951-4198 1097-0231 journal-article 2006 crwiley https://doi.org/10.1002/rcm.2686 2024-05-03T11:04:41Z Abstract Compound‐specific isotope analysis using gas chromatography interfaced to isotope ratio mass spectrometry (GC/IRMS) was applied for the determination of δ 13 C values of the marine halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1). The δ 13 C value of a lab‐made Q1 standard (−34.20 ± 0.27‰) was depleted in 13 C by more than 11‰ relative to the residues of Q1 in dolphin blubber from Australia and skua liver from Antarctica. This clarified that the synthesized Q1 was not the source for Q1 in the biota samples. However, two Australian marine mammals showed a large variation in the δ 13 C value, which, in our experience, was implausible. Since the GC/IRMS system was connected to a conventional ion trap mass spectrometer by a post‐column splitter, we were able to closely inspect the peak purity of Q1 in the respective samples. While the mass spectra of Q1 did not indicate any impurity, a fronting peak of PCB 101 was identified in one sample. This interference falsified the δ 13 C value of the respective sample. Once this sample was excluded, we found that the δ 13 C values of the remaining samples, i.e. liver of Antarctic brown skua (−21.47 ± 1.47‰) and blubber of Australian melon‐headed whale (−22.80 ± 0.33‰), were in the same order. The standard deviation for Q1 was larger in the skua samples than in the standard and the whale blubber sample. This was due to lower amounts of skua sample available. It remained unclear if the Q1 residues originate from the same producer and location. Copyright © 2006 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctic Antarctica Brown Skua Wiley Online Library Antarctic Rapid Communications in Mass Spectrometry 20 20 3018 3022 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Compound‐specific isotope analysis using gas chromatography interfaced to isotope ratio mass spectrometry (GC/IRMS) was applied for the determination of δ 13 C values of the marine halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1). The δ 13 C value of a lab‐made Q1 standard (−34.20 ± 0.27‰) was depleted in 13 C by more than 11‰ relative to the residues of Q1 in dolphin blubber from Australia and skua liver from Antarctica. This clarified that the synthesized Q1 was not the source for Q1 in the biota samples. However, two Australian marine mammals showed a large variation in the δ 13 C value, which, in our experience, was implausible. Since the GC/IRMS system was connected to a conventional ion trap mass spectrometer by a post‐column splitter, we were able to closely inspect the peak purity of Q1 in the respective samples. While the mass spectra of Q1 did not indicate any impurity, a fronting peak of PCB 101 was identified in one sample. This interference falsified the δ 13 C value of the respective sample. Once this sample was excluded, we found that the δ 13 C values of the remaining samples, i.e. liver of Antarctic brown skua (−21.47 ± 1.47‰) and blubber of Australian melon‐headed whale (−22.80 ± 0.33‰), were in the same order. The standard deviation for Q1 was larger in the skua samples than in the standard and the whale blubber sample. This was due to lower amounts of skua sample available. It remained unclear if the Q1 residues originate from the same producer and location. Copyright © 2006 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Vetter, Walter Gleixner, Gerd |
spellingShingle |
Vetter, Walter Gleixner, Gerd Compound‐specific stable carbon isotope ratios (δ 13 C values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1) |
author_facet |
Vetter, Walter Gleixner, Gerd |
author_sort |
Vetter, Walter |
title |
Compound‐specific stable carbon isotope ratios (δ 13 C values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1) |
title_short |
Compound‐specific stable carbon isotope ratios (δ 13 C values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1) |
title_full |
Compound‐specific stable carbon isotope ratios (δ 13 C values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1) |
title_fullStr |
Compound‐specific stable carbon isotope ratios (δ 13 C values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1) |
title_full_unstemmed |
Compound‐specific stable carbon isotope ratios (δ 13 C values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (Q1) |
title_sort |
compound‐specific stable carbon isotope ratios (δ 13 c values) of the halogenated natural product 2,3,3′,4,4′,5,5′‐heptachloro‐1′‐methyl‐1,2′‐bipyrrole (q1) |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1002/rcm.2686 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frcm.2686 https://onlinelibrary.wiley.com/doi/full/10.1002/rcm.2686 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Brown Skua |
genre_facet |
Antarc* Antarctic Antarctica Brown Skua |
op_source |
Rapid Communications in Mass Spectrometry volume 20, issue 20, page 3018-3022 ISSN 0951-4198 1097-0231 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rcm.2686 |
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Rapid Communications in Mass Spectrometry |
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20 |
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20 |
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3018 |
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3022 |
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1800740956136275968 |