Publication Details

Reference Category Journals
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Title (Primary) On-line δ18O measurement of organic and inorganic substances
Author Kornexl, B.E.; Gehre, M.; Höfling, R.; Werner, R.A.;
Journal Rapid Communications in Mass Spectrometry
Year 1999
Department ISOBIO; ANA; HDG;
Volume 13
Language englisch;
Abstract A method for the automated sample conversion and on-line oxygen isotope ratio (δ18O) determination for organic and inorganic substances is presented. The samples are pyrolytically decomposed at 1400 °C in the presence of nickelized graphite. With the system presented organic as well as inorganic samples such as nitrates, sulphates and phosphates of 50–100 µg O can be analyzed for their δ18O values with a standard deviation usually better than 0.5‰. Additionally, carbon isotope ratios of organic substances and nitrogen isotope ratios of inorganic nitrogenous compounds are available in the same sample run. Data for international and some inter-laboratory reference materials are presented to show the accuracy and reliability of the method. The effect of some additives on the CO yield was checked for substances which do not pyrolyze completely.
ID 8130
Persistent UFZ Identifier
Kornexl, B.E., Gehre, M., Höfling, R., Werner, R.A. (1999):
On-line δ18O measurement of organic and inorganic substances
Rapid Commun. Mass Spectrom. 13 , 1685 - 1693