Rapid column chromatography separation of alkylnaphthalenes from aromatic components in sedimentary organic matter for compound specific stable isotope analysis

Jiang, AiZhu; Zhou, Peiyu; Sun, Yuting; Xie, Lijuan

doi:10.1016/j.orggeochem.2013.04.007

Cited by 18 publications

(6 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To further reduce the complexity of the aromatic hydrocarbon fraction in order to conduct CSIA, aliquots were subject to sub-fractionation using alumina (fully activated) column chromatography based on procedures described by Jiang et al (2013) to produce subfractions of mainly monodi, tri and ≥ tetra-cyclic aromatic hydrocarbons and heterocyclic structures.…”

Section: Isolation Of Maltene and Asphaltene Fractionsmentioning

confidence: 99%

Multi-spectroscopic and elemental characterization of southern Australian asphaltites

Scarlett

Holman

Georgiev

et al. 2019

Organic Geochemistry

View full text Add to dashboard Cite

Section: Isolation Of Maltene and Asphaltene Fractionsmentioning

confidence: 99%

Multi-spectroscopic and elemental characterization of southern Australian asphaltites

Scarlett

Holman

Georgiev

et al. 2019

Organic Geochemistry

View full text Add to dashboard Cite

“…Separation of Aliphatic Hopanes, Benzohopanes, Secohopanes, and Sulfidic Hopanes. The details of the separation methods of aliphatic hopanes, benzohopanes, secohopanes, and sulfidic hopanes were described by Cheng et al, 74 Jiang et al, 75 Wang et al, 76 and Wu et al, 77 respectively. The methods were introduced briefly in the following.…”

Section: Samples and Methodsmentioning

confidence: 99%

Origin and Geochemical Implications of Hopanoids in Saline Lacustrine Crude Oils from Huanghekou East Sag and Laizhouwan Northeastern Sag, Bohai Bay Basin

et al. 2021

View full text Add to dashboard Cite

A suite of low-mature crude oils (five high-sulfur oils and six low-sulfur oils) from the Huanghekou and the Laizhouwan Sags, Bohai Bay Basin, are analyzed to investigate the fate of the hopanoids. Abundant hopanes, such as secohopanes, 25-norhopanes, benzohopanes, aromatized secohopanes, and sulfide hopanes, are identified, and their carbon isotope compositions are determined. Varying 13C isotope values of C31 hopane (−38.7–34.0‰) and C29‑30 hopanes (−38.5–31.5‰) suggest different bacterial sources of these compounds. The presence of 25-norhopanes with enriched heavy carbon isotopes in severely biodegraded oils suggests that they are microbially mediated products. The detection of the isotopically depleted C29 and C30 D-ring-8,14-secohopanes (−45.6–41.2‰) indicates that secohopanes are from methane-oxidizing bacteria (methanotrophs). The presence of isorenieratane, lower aryl isoprenoid ratios, and a good correlation between the sulfur content and the gammacerane index indicate the presence of green sulfur bacteria (Chlorobiaceae) under photic zone euxinic conditions. Water column stratification results in good preservation of the organic matter, and it is in favor of diversity of aquatic microorganisms. The ratios of C35/C34 sulfide hopane, C35 sulfide hopane-2/C35 sulfide hopane-1, and C35/C34 benzohopane are influenced by the reducing environments in this region. In addition, the D-ring monoaromatized 8,14-secohopanoid/(D-ring monoaromatized 8,14-secohopanoid + benzohopanes) and C31–C35 secomoretanes/secohopanes are affected by the maturity. We hypothesize that the reducing environments and thermal effects are important markers for the hopanoid transformation, including the incorporation of inorganic sulfur in substituting functional groups, cyclizing, aromatizing, and opening ring C of the hopanoids.

show abstract

“…Column chromatography of the bitumen fraction on silica gel yielded aliphatic, aromatic and polar fractions. To further con- centrate OSCs, aromatic fractions were fractionated over aluminium oxide (Type 507C neutral; Fluka); using solutions of nhexane:DCM (99:01 v/v), n-hexane:DCM (90:10 v/v) and DCM in a refined procedure outlined by Jiang et al (2013) -the OSCs exclusively eluted in the third sub-fraction. Remnant carbonates were removed from the kerogen fraction by treatment with concentrated HCl at $60°C (24 h).…”

Section: Methodsmentioning

confidence: 99%

δ34S character of organosulfur compounds in kerogen and bitumen fractions of sedimentary rocks

Grotheer

Greenwood

McCulloch

et al. 2017

Organic Geochemistry

View full text Add to dashboard Cite

show abstract

Rapid column chromatography separation of alkylnaphthalenes from aromatic components in sedimentary organic matter for compound specific stable isotope analysis

Cited by 18 publications

References 33 publications

Multi-spectroscopic and elemental characterization of southern Australian asphaltites

Multi-spectroscopic and elemental characterization of southern Australian asphaltites

Origin and Geochemical Implications of Hopanoids in Saline Lacustrine Crude Oils from Huanghekou East Sag and Laizhouwan Northeastern Sag, Bohai Bay Basin

δ34S character of organosulfur compounds in kerogen and bitumen fractions of sedimentary rocks

Contact Info

Product

Resources

About