21634-71-9Relevant academic research and scientific papers
Selective Determination of Pentafluorobenzyl Ester Derivatives of Carboxylic Acids by GC Using Microwave Plasma and Mass Selective Detection
Brill, Jeffrey H.,Narayanan, Bikshandarkoil A.,McCormick, John P.
, p. 1617 - 1620 (2007/10/03)
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 C1 to C20, were examined and found to be derivatized with yields greather than 90 percent, and a sample of creek water was examined for its carboxylic acid content. - Index Headings: Microwave-induced plasma detector; Fluorine; Carboxylic acids; Pentafluorobenzyl esters
