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Publication

Human dermal exposure to galaxolide from personal care products

Title
Human dermal exposure to galaxolide from personal care products
Type
Article in International Scientific Journal
Year
2013
Authors
P. Correia
(Author)
FEUP
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A. Cruz
(Author)
Other
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L. Santos
(Author)
FEUP
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Journal
Vol. 35 No. 3
Pages: 299-309
ISSN: 0142-5463
Publisher: Wiley-Blackwell
Indexing
Scientific classification
FOS: Natural sciences > Chemical sciences
Other information
Authenticus ID: P-005-0EW
Abstract (EN): Synopsis Musks are synthetic fragrances applied on personal care and household products as fixatives, by retarding the release of other fragrances with higher volatility. Galaxolide is the most used polycyclic musk since the 90th decade, and it has been detected in several environmental and biological matrices, particularly in human tissues and fluids. For exposure assessment purposes, large-monitoring data need to be obtained and rapid but reliable analytical techniques are requested. The main objective of this study is to develop and validate a new and fast analytical methodology to quantify galaxolide in personal care products and to apply this method to real matrices like skin care products (creams and lotions), shower products (soap bar), hair care products (shampoo and hair conditioner) and oral care products (toothpaste), to evaluate the human dermal exposure risk. A dispersive solid-phase extraction is proposed, using QuEChERS methodology, followed by HPLC with fluorescence detection. Some extraction parameters were studied, like the ratio of sample/solvent amounts, the homogenization time, the salt addition effect and the used sorbents. The validation parameters of the developed method were the following: a linearity range of 0.0051.002mgkg1 sample, a limit of detection of 0.001mgkg1 sample, repeatability between 0.7% and 11.3% (variation coefficient of six standard injections), an intermediate precision of 2.5% (variation coefficient of six independent analysis of the same sample), mean recoveries ranging from 65% (soap bar) to 95% (body cream) and 3% of global uncertainty in most of the working range. The time of analysis, including the extraction steps, is 60min, allowing a throughput of 4samplesh1. Galaxolide was detected in all of the seven analysed products in concentrations ranging from 0.04 +/- 0.01mgkg1 sample (toothpaste) to 280.78 +/- 8.19mgkg1 sample (perfumed body cream), which may correspond to a significant estimated daily human dermal exposure of 904gday1. Resume Les muscs synthetiques sont des parfums appliques sur les produits de soin et les produits menagers comme fixateurs, qui retardent la liberation des autres parfums avec une volatilite plus elevee. Galaxolide est le plus utilise musc polycyclique depuis 20 ans, et il a ete detecte dans plusieurs matrices environnementales et biologiques, en particulier dans les tissus et les fluides humains. Aux fins d'evaluation d'exposition, de donnees de surveillance importantes doivent etre obtenues et des techniques analytiques rapides mais fiables sont donc demandes. L'objectif principal de cette etude est de developper et de valider une nouvelle methode analytique rapide et de quantifier le galaxolide dans les produits de soins, et d'appliquer cette methode pour les matrices reelles comme les produits de soins de la peau (cremes et lotions), les produits de douche (savon), produits de soins capillaires (shampoing et revitalisant capillaire) et les produits d'hygiene buccale (dentifrice), afin d'evaluer le risque d'exposition humaine par voie cutanee. Une extraction en phase solide dispersive est proposee, en utilisant une methodologie QuEChERS, suivie par HPLC avec detection par fluorescence. Certains parametres d'extraction ont ete etudies, comme le ratio des quantites d'echantillon/solvant, le temps d'homogeneisation, l'effet de sel d'addition et les adsorbants utilises. Les parametres de validation de la methode mise au point sont les suivants: une plage de linearite de 0.005 a 1.002 mg.kg1 d'echantillon, une limite de detection de 0,001 mg. kg1 de l'echantillon, la repetabilite entre 0,7 et 11,3% (coefficient de variation de six injections standard), une precision intermediaire de 2,5% (coefficient de variation de six analyses independantes de l'echantillon meme), recouvrements moyens allant de 65% (savon) a 95% (creme pour le corps), et 3 % d'incertitude globale dans la plupart des gammes de travail. Le temps d'analyse, comprenant les etapes d'extraction, est de 60 minutes, ce qui permet un debit de 4 samples.h1. Le galaxolide a ete detecte dans l'ensemble des sept produits analyses dans des concentrations allant de 0,04 +/- 0,01 mg.kg1 (dentifrice) a 280,78 +/- 8,19 mg.kg1 (creme parfumee pour le corps), ce qui peut representer une importante exposition cutanee quotidienne humaine de 904 g.jour1.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 11
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