ABSTRACT
The performances of the GC-MS determination of suspected allergens in fragrance concentrates have been investigated. The limit of quantification was experimentally determined (10 mg/L), and the variability was investigated for three different data treatment strategies: (1) two columns and three quantification ions; (2) two columns and one quantification ion; and (3) one column and three quantification ions. The first strategy best minimizes the risk of determination bias due to coelutions. This risk was evaluated by calculating the probability of coeluting a suspected allergen with perfume constituents exhibiting ions in common. For hydroxycitronellal, when using a two-column strategy, this may statistically occur more than once every 36 analyses for one ion or once every 144 analyses for three ions in common.
Subject(s)
Allergens/analysis , Gas Chromatography-Mass Spectrometry/methods , Perfume/chemistry , Quality Control , Reproducibility of Results , Skin Irritancy Tests , VolatilizationABSTRACT
Having a haptic virtual environment for tele-echography will enable the medical expert with faster adaptation and especially facilitated immersion in what we could call a "virtual echographic examination cabinet". The innovation of this haptic control is to preserve medical expert proprioception and gesture feelings, which provide the users with indications that are synchronized with the echographic images. In this paper, we will focus on the telegesture module: we will detail several issues and solutions related to this particular problem of tele-robotic scan examination.