Isotope dilution-gas chromatography/mass spectrometry (ID-GC/MS) and isotope dilution-liquid chromatography/tandem mass spectrometry (ID-LC/MS/MS) methods have been developed for an determination of triiodothyronine (T3) in serum and their potential as candidate reference methods investigated. In bo
Fast gas chromatography-full scan quadrupole mass spectrometry for the determination of allergens in fragrances
✍ Scribed by Luigi Mondello; Danilo Sciarrone; Alessandro Casilli; Peter Quinto Tranchida; Paola Dugo; Giovanni Dugo
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 662 KB
- Volume
- 30
- Category
- Article
- ISSN
- 1615-9306
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The Scientific Committee for Cosmetics and NonFood Products in the 7th Amendment to the European Cosmetics Directive established 26 fragrance components, widely used in cosmetic products, as being responsible for a series of contact allergies (Directive 2003/15/EC, Official Journal of the European Union, L66/26, 11.3.2003). The regulation foresees that any allergen, present in excess of 100 mg/kg in rinse‐off and of 10 mg/kg in leave‐on formulations, must be reported on the label of the product. The present research reports a fast GC‐full scan quadrupole mass spectrometric method (under 5 min) for the qualitative/quantitative analysis of allergens in perfumes. Reliable peak identification was achieved through a twin‐filtered MS library matching procedure, considering a minimum degree of spectral similarity (90%) and retention data (a linear retention index window was applied). Peak quantification was carried out by using a specific extracted ion. In case a suspected allergen fell within its retention time window but presented a low degree of spectral purity (< 90%), analyte determination was achieved by using three extracted ions (one quantifier and two qualifiers). The fast GC‐MS method was validated in terms of intraday retention time and peak area precision, LODs and LOQs, and method linearity. Finally, peak skewing was also evaluated and was within more than acceptable limits.
📜 SIMILAR VOLUMES
## Abstract Vardenafil (VDN) is one of the three commercially available phosphodiesterase type 5 inhibitors and it is mainly used in the treatment of erectile dysfunction. A sensitive and specific gas chromatography/mass spectrometry (GC/MS) method for the determination of VDN in blood has been dev
## Abstract Alcohol is the most frequently abused ‘addictive substance’ that causes serious social problems throughout the world; thus alcoholism is of particular interest in clinical and forensic medicine. Ethyl glucuronide (EtG) is a marker of recent alcohol consumption that detects alcohol use r
## Abstract This paper proposes a new analytical procedure based on the headspace solid‐phase microextraction (HS‐SPME) technique and gas chromatography‐selected ion monitoring‐mass spectrometry (GC‐SIM‐MS) for the determination of 16 phenols extracted from leather samples. The optimized conditions