Gas-Chromatographic Determination of Volatile Fatty Acids in Aqueous Samples by Direct Injection.
نویسندگان
چکیده
منابع مشابه
Quantitative gas-chromatographic determination of short-chain fatty acids in aqueous samples.
We report the use of SP-1200 (Supelco Inc.) for quantitative gas-chromatographic determination of shortchain fatty acids (C2-C5) in stool water. The ratio of peak areas for these acids to that for 2-methylvaleric acid (internal standard) is linear for each acid from 60 to 1800 mg/liter. Lactic acid, occasionally present in stool in abnormally high amounts, is not detectable as the free acid on ...
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A simple, reproducible, and rapid gas chromatographic method for short-chain fatty acid determination in human feces was developed. It involves direct injection of fecal supernatants into the gas chromatograph, without any pretreatment. Contamination of the gas chromatographic column with nonvolatile fecal material was prevented by the use of a glass liner in the injector. This liner, which act...
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serum fatty acids on 30 healthy lranian women were detemined by a gas chromatographic method. oleic and stearic acids were used as standards. the mean values were myristic acid 5. 7% , palmitic acid 43% , palmitoleic acid 5.3% , stearic acid 8% , oleic acid 21. 3% and linleic acid 16.4% of total fatty acid serum contents.
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The volatile fatty acid profiles were determined by a simple gas chromatographic method in 375 microbiologically positive and negative blood cultures. Aerobic bacteria yielded profiles with low content of acids, some of which were chromatographically negative. Anaerobic bacteria produced more acids and more distinctive profiles. The method makes it possible to confirm the microbiological findin...
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ژورنال
عنوان ژورنال: Journal of Environmental Chemistry
سال: 1992
ISSN: 1882-5818,0917-2408
DOI: 10.5985/jec.2.211