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Title (Primary) Development and validation of an universal interface for compound-specific stable isotope analysis of chlorine (37Cl/35Cl) by GC-high-temperature conversion (HTC)-MS/IRMS
Author Renpenning, J.; Hitzfeld, K.L.; Gilevska, T.; Nijenhuis, I.; Gehre, M.; Richnow, H.-H.;
Journal Analytical Chemistry
Year 2015
Department ISOBIO;
Volume 87
Issue 5
Language englisch;
POF III (all) T41;
Supplements https://pubs.acs.org/doi/suppl/10.1021/ac504232u/suppl_file/ac504232u_si_001.pdf
UFZ wide themes RU3;
Abstract

A universal application of compound-specific isotope analysis of chlorine was thus far limited by the availability of suitable analysis techniques. In this study, gas chromatography in combination with a high-temperature conversion interface (GC-HTC), converting organic chlorine in the presence of H2 to gaseous HCl, was coupled to a dual-detection system, combining an ion trap mass spectrometer (MS) and isotope-ratio mass spectrometer (IRMS). The combination of the MS/IRMS detection enabled a detailed characterization, optimization, and online monitoring of the high-temperature conversion process via ion trap MS as well as a simultaneous chlorine isotope analysis by the IRMS. Using GC-HTC-MS/IRMS, chlorine isotope analysis at optimized conversion conditions resulted in very accurate isotope values (δ37ClSMOC) for measured reference material with known isotope composition, including chlorinated ethylene, chloromethane, hexachlorocyclohexane, and trichloroacetic acids methyl ester. Respective detection limits were determined to be <15 nmol Cl on column with achieved precision of <0.3‰.

ID 16056
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=16056
Renpenning, J., Hitzfeld, K.L., Gilevska, T., Nijenhuis, I., Gehre, M., Richnow, H.-H. (2015):
Development and validation of an universal interface for compound-specific stable isotope analysis of chlorine (37Cl/35Cl) by GC-high-temperature conversion (HTC)-MS/IRMS
Anal. Chem. 87 (5), 2832 - 2839