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Materials with known 2H, 13C,15N and 18O isotopic composition
Unit Size: 1 ml
NBS 22 mineral oil was prepared by S. Silverman, Chevron Oil Company, La Habra, California [1]. The material served for several decades as reference material for organic carbon bearing substances. The carbon isotopic composition of this material was re-assessed with changes in recommended δ13C value and improvement in its value uncertainty [2,3].
| Analyte | Value | Unit | SD | R/I/C |
|---|---|---|---|---|
| δ13C | -30.031 | ‰VPDB | 0.043 | C |
| δ2H | -120 | ‰VSMOW | 1 | C |
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
References:
SILVERMAN, S.R., "Investigations of petroleum origin and evolution mechanisms by carbon isotope studies", Isotopic and Cosmic Chemistry (CRAIG, H., MILLER, S.L., WASSERBURG, G.J., Eds.), North Holland, (1964) 92-102.
QI, H., COPLEN, T.B., GEILMANN, H., BRAND, W.A., BÖHLKE, J.K., Two new organic reference materials for δ13C and δ15N measurements and a new value for the δ13C of NBS 22 oil, Rapid Commun. Mass Spectrom. 17 (2004) 2483-2487.
COPLEN, T.B., BRAND, W.A., GEHRE, M., GRÖNING M., MEIJER, H.A.J., TOMAN, B., VERKOUTEREN, R.M., New Guidelines for 13C Measurements, Anal. Chem. 78 7 (2006) 2439-2441.
