| Title: | Quantitative determination of volatile organic compounds (VOC) in milk by multiple dynamic headspace extraction and GC-MS |
| Author(s): | Ciccioli P; Brancaleoni E; Frattoni M; Fedele V; Claps S; Signorelli F; |
| Address: | "Istituto di Metodologie Chimiche del CNR, Via Salaria km 29 300, CP 10, 00016 Monterotondo Scalo (RM), Italy. paolo.ciccioli@imc.cnr.it" |
| ISSN/ISBN: | 0003-4592 (Print) 0003-4592 (Linking) |
| Abstract: | A method for the accurate determination of volatile organic compounds (VOC) in milk samples has been developed and tested. It combines multiple dynamic headspace extraction with GC-MS. Absolute amounts of VOC in the liquid phase are obtained by determining the first order kinetic dependence of the stepwise extraction of the analytes and internal standards from the liquid matrix. Compounds released from milk were collected on a train of traps filled with different solid sorbents to cover all components having a number of carbon atoms ranging from 4 to 15. They were analysed by GC-MS after thermal desorption of VOC from the collecting traps. Quantification of VOC in milk was performed using deuterated compounds as internal standards. The method was used to follow seasonal variations of monoterpenes in goat milk and to detect the impact of air pollution on the quality of milk |
| Keywords: | Animals Environmental Pollutants/*analysis Gas Chromatography-Mass Spectrometry Goats Milk/*chemistry Organic Chemicals/analysis Sensitivity and Specificity Volatilization; |
| Notes: | "MedlineCiccioli, Paolo Brancaleoni, Enzo Frattoni, Massimiliano Fedele, Vincenzo Claps, Salvatore Signorelli, Federica eng Italy 2004/10/28 Ann Chim. 2004 Sep-Oct; 94(9-10):669-78. doi: 10.1002/adic.200490084" |
