Sulfur isotope composition of individual compounds in immature organic-rich rocks and possible geochemical implications

Shawar, Lubna; Said–Ahmad, Ward; Ellis, Geoffrey S.; Amrani, Alon

doi:10.1016/j.gca.2020.01.034

Cited by 19 publications

(11 citation statements)

References 125 publications

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“…1 Benzothiophene, a sulfur-containing bicyclic compound, is obtained mainly from coal tar, 2,3 but is also present in coffee beans 4 and immature organic-rich sedimentary rocks. 5 In China alone, the annual coal tar production is about 25 million tons, which corresponds to about 70 thousand tons of benzothiophene. 6 In addition, benzothiophene can be synthesized by the reaction between styrene and hydrogen sulphide or between benzene and thiophene.…”

Section: Introductionmentioning

confidence: 99%

A facile approach for the preparation of poly(benzothiophene-alt-maleic anhydride) microspheres by self-stabilized precipitation polymerization

Chang

Liang

et al. 2022

Polym. Chem.

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Section: Introductionmentioning

confidence: 99%

A facile approach for the preparation of poly(benzothiophene-alt-maleic anhydride) microspheres by self-stabilized precipitation polymerization

Chang

Liang

et al. 2022

Polym. Chem.

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“…Tuttle (1991), then Werne et al (2003) explained this relative enrichment by a delayed sulfurization of organic matter relative to the formation of pyrite, but this simple view likely overlooks the fact that different organic molecules may react with reduced species at different rates depending on the context (e.g. Amrani, 2014, Raven et al, 2016a, Raven et al, 2016b, Shawar et al, 2020. Thus, our understanding of the biogeochemical S cycle still remains incomplete and could clearly benefit from S org multi-isotope analyses, but only few dedicated studies have been performed so far (e.g.…”

Section: Introductionmentioning

confidence: 99%

Quantitative and specific recovery of natural organic and mineral sulfur for (multi-)isotope analysis

Jovovic

Grossi

Adam

et al. 2020

Organic Geochemistry

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Deciphering the role of sulfur in biogeochemical cycles strongly relies on its stable isotope composition, which ultimately depends on the ability to quantitatively recover different sulfur species from geological samples. For decades most studies have been restricted to the 34 S/ 32 S composition of bulk samples, using simple methods based on the analysis of SO 2 released by sample combustion combined to mass spectrometry. The wet chemistry procedures required to selectively extract specific sulfur species were generally avoided due to their tediousness and inefficiency for some complex matrices, especially when targeting organic sulfur. With the recent advent of multi-isotope studies (investigating the minor sulfur stable isotopes 33 S and 36 S) which rely either on the analysis of sulfur as SF 6 , or on the use of secondary ion or multi-collector inductively coupled plasma mass spectrometry, wet chemistry-based preparation procedures were brought back to the stage with a renewed interest in developing procedures better adapted to the investigation of specific sulfur species.Here we propose a new stepwise chemical procedure for the quantitative recovery and multiisotope analysis of organic sulfur from both solvent soluble (total lipid extract) and insoluble (kerogen) fractions, based on a wet oxidation by sodium hypochlorite. This procedure also allows the multi-isotope analysis of inorganic sulfur species (elemental sulfur, sulfates and sulfides) in the same sample. Its application to different well-known petroleum source rocks and to an oil demonstrates its relevance for disentangling the interactions between the different sulfur pools and for shedding new light on the sulfur biogeochemical cycle.

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“…The range of bulk δ 34 S values for petroleum is −8‰ to 32‰ . Significant variance in the δ 34 S values of compound-specific organosulfur in ancient and immature organic-rich rocks reaches 28‰ and 36‰, respectively . The average δ 34 S values of 12 C 34 S OSs in urban aerosols here are slightly lower than that of the compound-specific organosulfurs in other environmental samples.…”

Section: Results and Discussionmentioning

confidence: 67%

“…48 Significant variance in the δ 34 S values of compoundspecific organosulfur in ancient and immature organic-rich rocks reaches 28‰ and 36‰, respectively. 49 The average δ 34 S values of 12 C 34 S OSs in urban aerosols here are slightly lower than that of the compound-specific organosulfurs in other environmental samples. Greenwood et al 24 have shown that thermal maturation of organosulfurs gradually transforms them into aromatics with a 34 S enrichment trend.…”

Section: ■ Materials and Methodsmentioning

confidence: 78%

Deciphering ¹³C and ³⁴S Isotopes of Organosulfates in Urban Aerosols by FT-ICR Mass Spectrometry

Xie

Dai

et al. 2022

Environ. Sci. Technol. Lett.

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Organosulfates (OSs) are some of the important components of secondary organic aerosols in ambient air. However, little is known about the stable carbon and sulfur isotopic compositions of OSs. Here, we identified the isotopic pair 12 C n / 13 C 12 C n−1 and 32 S n / 34 S 32 S n−1 formulas in urban aerosols using ultra-highresolution Fourier transform ion cyclotron resonance mass spectrometry. Family series of 694−1649 13 C 32 S OSs and 40−144 12 C 34 S OSs with completely coherent carbon chains were detected, accounting for 37−52% and 2.2−4.5%, respectively, of the observed 12 C 32 S OSs. OSs with detected isotopic peaks have relatively high levels of saturation and high volatilities, especially those containing 34 S isotopes with H/C > 1.5. Moreover, the δ 13 C and δ 34 S values of OSs were estimated with mean values ranging from −22‰ to −0.87‰ and from −1‰ to 26‰, respectively. Notably, unsaturated OSs might be more enriched with 34 S than aliphatic ones. Furthermore, all detected 12 C 34 S OSs are in the low-O/C corridor with a low carbon oxidation state, which are mostly volatile and low-volatile organic compounds with high volatility, implying that they are generated by gasphase oxidation. These findings represent a first step toward identifying the individual molecules of 13 C and 34 S isotopic OSs in atmospheric aerosols.

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Sulfur isotope composition of individual compounds in immature organic-rich rocks and possible geochemical implications

Cited by 19 publications

References 125 publications

A facile approach for the preparation of poly(benzothiophene-alt-maleic anhydride) microspheres by self-stabilized precipitation polymerization

A facile approach for the preparation of poly(benzothiophene-alt-maleic anhydride) microspheres by self-stabilized precipitation polymerization

Quantitative and specific recovery of natural organic and mineral sulfur for (multi-)isotope analysis

Deciphering ¹³C and ³⁴S Isotopes of Organosulfates in Urban Aerosols by FT-ICR Mass Spectrometry

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Sulfur isotope composition of individual compounds in immature organic-rich rocks and possible geochemical implications

Cited by 19 publications

References 125 publications

A facile approach for the preparation of poly(benzothiophene-alt-maleic anhydride) microspheres by self-stabilized precipitation polymerization

A facile approach for the preparation of poly(benzothiophene-alt-maleic anhydride) microspheres by self-stabilized precipitation polymerization

Quantitative and specific recovery of natural organic and mineral sulfur for (multi-)isotope analysis

Deciphering 13C and 34S Isotopes of Organosulfates in Urban Aerosols by FT-ICR Mass Spectrometry

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Deciphering ¹³C and ³⁴S Isotopes of Organosulfates in Urban Aerosols by FT-ICR Mass Spectrometry