Results 151 to 160 of about 116,875 (192)

Compound-specific isotope analysis for aerobic biodegradation of phthalate acid esters

Talanta, 2012
The degradation of three phthalic acid esters (PAEs) (dimethyl phthalate (DMP), diethyl phthalate (DEP) and di-n-butyl phthalate (DBP)) by natural microbial community under aerobic condition and their isotope fractionation were compared by using a laboratory microcosm system with natural marine sediment overlying with natural seawater.
Xuewei, Peng, Xianguo, Li
openaire   +2 more sources

Compound-Specific Isotope Analysis as a Tool To Characterize Biodegradation of Ethylbenzene

Environmental Science & Technology, 2014
This study applied one- and two-dimensional compound-specific isotope analysis (CSIA) for the elements carbon and hydrogen to assess different means of microbial ethylbenzene activation. Cultures incubated under nitrate-reducing conditions showed significant carbon and highly pronounced hydrogen isotope fractionation of comparable magnitudes, leading ...
Dorer, C., Vogt, C., Kleinsteuber, S., Stams, A.J.M., Richnow, H.H.   +4 more
openaire   +3 more sources

Compound-Specific Isotope Analysis across the Frasnian-Famennian Boundary

Mineralogical Magazine, 1998
The Frasnian-Famelmian extinction events represents one of the big five mass extinction events during the Phanerozoic with the decline of the Devonian stromatoporoid-coral reef ecosystem representing one of the most prominent crises in reef history. Inorganic carbon isotope investigations of FrasnianFamennian boundary sections show two +3%o excursions ...
openaire   +1 more source

Utility of Compound‐Specific Isotope Analysis for Vapor Intrusion Investigations

Groundwater Monitoring & Remediation, 2016
Abstract Different types of data can be collected to evaluate whether or not vapor intrusion is a concern at sites impacted with volatile organic compound ( VOC ) contamination in the subsurface.
Lila Beckley, Thomas McHugh, Paul Philp
openaire   +1 more source

Compound specific isotope analysis in hydrogeology

Journal of Hydrology, 2022
Elizabeth Phillips, Bridget A. Bergquist, Michelle M.G. Chartrand, Weibin Chen, Elizabeth A. Edwards, Martin Elsner, Tetyana Gilevska, Sarah Hirschorn, Axel Horst, Georges Lacrampe-Couloume, Silvia A. Mancini, Jennifer McKelvie, Penny L. Morrill, Ann Sullivan Ojeda, Gregory F. Slater, Brent E. Sleep, Joan De Vera, Oliver Warr, Elodie Passeport   +18 more
openaire   +1 more source

Source apportionment of polychlorinated biphenyls using compound specific isotope analysis

Organic Geochemistry, 2003
Abstract Reported here are results of the compound specific carbon isotopic analysis (CSIA) of individual PCB congeners. This investigation was designed to determine the suitability of CSIA on this class of compounds in natural materials. Samples of duck tissue, duck liver, duck egg and grass carp were collected from the Housatonic River ...
Peter J. Yanik, Thomas H. O'Donnell, Stephen A. Macko, Yaorong Qian, Mahlon C. Kennicutt   +4 more
openaire   +1 more source

Compound Specific Isotopic Analysis (CSIA) of landfill leachate DOC components

Chemical Geology, 2005
In an attempt to better characterize the biogeochemical evolution of dissolved organic carbon (DOC) in landfill leachates, and to interpret the origin of DOC in groundwater, we have developed a new analytical technique for the compound specific isotope (13C) analysis (CSIA) of DOC.
Hossein Mohammadzadeh, Ian Clark, Mark Marschner, Gilles St-Jean   +3 more
openaire   +1 more source

Current challenges in compound-specific stable isotope analysis of environmental organic contaminants

Analytical and Bioanalytical Chemistry, 2012
Compound-specific stable-isotope analysis (CSIA) has greatly facilitated assessment of sources and transformation processes of organic pollutants. Multielement isotope analysis is one of the most promising applications of CSIA because it even enables distinction of different transformation pathways.
Elsner, Martin, Jochmann, Maik, Hofstetter, Thomas B., Hunkeler, Daniel, Bernstein, Anat, Schmidt, Torsten Claus, Schimmelmann, Arndt   +6 more
openaire   +3 more sources

Protocol for using compound‐specific isotope analysis in environmental forensics

Remediation Journal, 2019
AbstractForensic arguments must be demonstrably objective. A protocol is proposed to supply a framework to achieve this when using data from compound specific isotope analysis (CSIA) in developing forensic arguments about volatile organic carbon (VOC) contamination in groundwater.
openaire   +1 more source

COMPOUND-SPECIFIC ISOTOPIC ANALYSIS:

2022
openaire   +1 more source