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Dynamic headspace analysis: Optimization of titration by experimental design
Author(s) -
Talou Thierry,
Rigal Luc,
Gaset Antoine
Publication year - 2005
Publication title -
journal of chemometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.47
H-Index - 92
eISSN - 1099-128X
pISSN - 0886-9383
DOI - 10.1002/cem.1180030519
Subject(s) - titration , tenax , reproducibility , chromatography , adsorption , desorption , chemistry , trap (plumbing) , truffle , analytical chemistry (journal) , gas chromatography , environmental science , botany , organic chemistry , biology , environmental engineering
The dynamic headspace titration of the volatile constituents of the black truffle (Tuber Melanosporum) is planned to be carried out with the new gas chromatographic DCI using Tenax trapping. In this paper the necessary optimization of the experimental factors which influence the desorption of the volatiles from the sample and the adsorption on the trap is carried out by experimental design. The study of the isoresponse curves makes it possible to determine the optimum conditions for a rapid titration of highest sensitivity and reproducibility, avoiding water trapping.