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Online clean‐up of volatile compounds in complex matrices for GC‐MS quantification: testing with fragranced consumer products
Author(s) -
Debonneville Christian,
Chaintreau Alain
Publication year - 2014
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.3198
Subject(s) - chemistry , chromatography , polydimethylsiloxane , calibration curve , analyte , gas chromatography–mass spectrometry , sample preparation , triclosan , vaporization , analytical chemistry (journal) , mass spectrometry , detection limit , organic chemistry , medicine , pathology
The quantification of volatile compounds in cosmetic products or raw materials remains problematic because of the complexity of the matrices. Two approaches were investigated on the basis of a full vaporization of analytes from a sample deposited on a cylinder of polydimethylsiloxane (PDMS) foam: (1) an internal standardization using the same calibration curve for all samples, which gives rise to unexplained peak magnifications that biases the determinations, and (2) a standard addition protocol. The latter was tested for the analysis of suspected allergens and allowed the quantification of all compounds except farnesol and Lyral®. A decision tree was proposed to ascertain peak identity and the validity of the regression curve. Using this strategy in the range of 50–100 mg/l, 91% of all individual results (except farnesol and Lyral®) in all matrices fell within a tolerance interval of ±25%. In addition, the use of disposable PDMS cylinders allowed 400 injections without polluting the injector or the column. Copyright © 2014 John Wiley & Sons, Ltd.