| Autor: |
Brill, Jeffrey H., Narayanan, Bikshandarkoil A., McCormick, John P. |
| Zdroj: |
Applied Spectroscopy; December 1991, Vol. 45 Issue: 10 p1617-1620, 4p |
| Abstrakt: |
A highly selective, sensitive method for determination of carboxylic acids in water has been developed that is based on fluorine-selective gas chromatography (GC) detection of pentafluorobenzyl ester derivatives. The atmospheric-pressure helium microwave-induced plasma detector is well suited for fluorine-specific detection of these derivatives, which were well resolved by capillary GC and displayed a characteristic fragmentation behavior when examined by GC-mass selective detection. For demonstration purposes, a number of carboxylic acids, ranging from C1to C20, were examined and found to be derivatized with yields greater than 90%, and a sample of creek water was examined for its carboxylic acid content. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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