Isotope ratio monitoring

Merritt DA, KH Freeman, MP Ricci, SA Studley, JM Hayes (1995) Performance and optimization of a combustion interface for isotope ratio monitoring gas chromatography/mass spectrometry. Anal Chem 67 2461-2473. 

Evershed, R. P., Amot, K. I., Collister, J., Eglinton, G. and Charters, S. (1994) Application of isotope ratio monitoring gas chromatography mass spectrometry to the analysis of organic residues of archaeological origin. Analyst 119, 909 914. 

Hilkert, A. W., Douthitt, C. B., Schliiter, H. J. and Brand, W. A. (1999) Isotope ratio monitoring gas chromatography/mass spectrometry of D/H by high temperature conversion isotope ratio mass spectrometry. Rapid Communications in Mass Spectrometry 13, 1226 1230. 

Matthews, D. E. and Hayes, J. M. (1978) Isotope ratio monitoring gas chromatography mass spectrometry. Analytical Chemistry 50, 1465 1473. 

Abstract This paper reviews the principles and history of gas isotope ratio monitoring... 

Selected applications of isotope ratio monitoring technique in mass spectrometry to geochemistry, biology, medicine and other areas of science are described. It was shown that gas isotope ratio mass spectrometry has greatly increased our understanding of the biogeochemical cycles of C, N, S and H2O in natural and agricultural ecosystems. 

Brand, W.A. High precision isotope ratio monitoring in mass spectrometry. J. of Mass Spectrometery. 31,1996,225-235. 

Jones, A. M., Iacumin, P., and Young, E. D. (1999). High-resolution delta 0-18 analysis of tooth enamel phosphate by isotope ratio monitoring gas chromatography mass spectrometry and ultraviolet laser fluorination. Chemical Geology 153 241-248. 

Continuous Flow Isotope Ratio Monitoring Mass Spectrometers... 

Between the early 1950s, when the dual viscous-flow mass spectrometer was introduced by Nier and the mid 1980s only minor modifications have been made on the hardware of commercial mass spectrometers. Special efforts have been undertaken in the past years to reduce the sample size for isotope measurements. This has led to a modification of the classic dual inlet technique to the continuous-flow isotope ratio monitoring mass spectrometer in which the gas to be analyzed is a trace gas in a stream of carrier gas, which achieves viscous-flow conditions. Today, the majority of gas mass spectrometers are sold with the continuous flow system, instead of the dual inlet system. 

With the application of the newly developed continuous-flow isotope-ratio monitoring mass spectrometers, the required seawater sample volume for N2O dual isotope measurements have been drastically reduced and therefore facilitated the determination high resolution depth profiles of the N2O dual isotope signature (Brand, 1996 Yoshinari et al, 1997) Repeated measurements of depth profiles at... 

Yoshinari, T., Altabet, M. A., Naqvi, S. W. A., Codispoti, L., Jayakumar, A., Kuhland, M., and Devol, A. (1997). Nitrogen and oxygen isotopic composition of N2O from suboxic waters of the eastern tropical North Pacific and the Arabian Sea — Measurements by continuous-flow isotope-ratio monitoring. Mar. Chem. 56(3—4), 253—264. 

Merritt, D. A. and J. M. Hayes (1994) Factors controlling precision and accuracy in isotope-ratio-monitoring mass spectrometiy. Analyt Chem. 66, 2336-47. 

M. Krummen, A.W. Hilkert, D. Juchelka, A. Duhr, H.-J. Schliiter, R. Pesch (2004) A new concept for isotope ratio monitoring liquid chromatography/mass spectrometry. Rapid Comm. Mass Spec-trom. IS, 2260-2266. 

A.L. Sessions, T.W. Burgoyne, J.M. Hayes (2001) Correction of Hj contributions in hydrogen isotope ratio monitoring mass spectrometry. Anal. Chem. 22, 192-199... 

D.A. Merritt, J.M. Hayes (1994) Nitrogen isotope analyses by isotope-ratio-monitoring gas chro-matography/mass spectrometry. J. Am. Soc. Mass Spectrom. 387-397... 

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