| Title: | "Determination of volatile organic contaminants in bulk oils (edible, injectable, and other internal medicinal) by purge-and-trap gas chromatography/mass spectrometry" |
| Address: | "U.S. Food and Drug Administration, Southeast Regional Laboratory, Atlanta, GA 30309" |
| ISSN/ISBN: | 1060-3271 (Print) 1060-3271 (Linking) |
| Abstract: | Purge-and-trap gas chromatography/mass spectrometry is evaluated for the quantitation of part-per-billion levels of volatile organic contaminants in bulk vegetable oils. Results using 2 purge techniques (direct purging of the heated oil and purging after dispersing the oil on an aluminum oxide powder) and 2 quantitative methods (standard curve and deuterium-labeled internal standard addition) are reported. Twenty volatile compounds and 8 vegetable oils were investigated. Recovery data and estimated detection limits for each compound are reported for each purge technique. Generally acceptable recoveries (70-130% for more than 90% of the analyte spikes) and acceptable detection levels (approximately 4-10 ppb) were obtained for all compounds using either the external standard curve or the deuterium-isotope-labeled internal standard. The use of a dispersant (such as alumina) for sample purging resulted in poor recoveries of the highly volatile contaminants |
| Keywords: | Aluminum Oxide Deuterium *Food Contamination Gas Chromatography-Mass Spectrometry/*methods/statistics & numerical data Hot Temperature Hydrocarbons/*analysis Plant Oils/*chemistry Volatilization; |
| Notes: | "MedlineThompson, D W eng England 1994/05/01 J AOAC Int. 1994 May-Jun; 77(3):647-54" |
