Friday, February 15, 2013

Human Dermal Exposure to Galaxolide from Personal Care Products.


Human Dermal Exposure to Galaxolide from Personal Care Products.


Feb 2013

Source

Laboratório de Engenharia de Processos, Ambiente e Energia, (LEPAE), Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal; Núcleo de Investigação em Farmácia, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Porto/Instituto Politécnico do Porto (ESTSP/IPP), Rua Valente Perfeito, 322, 4400-330, Vila Nova de Gaia, Portugal.

Abstract

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 90(th) 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 careproducts, 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), in order 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: a linearity range of 0.005-1.002 mg.kg(-1) sample, a limit of detection of 0.001 mg.kg(-1) 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 60 minutes, allowing a throughput of 4 samples.h(-1) . Galaxolide was detected in all of the seven analyzed products in concentrations ranging from 0.04 ± 0.01 mg.kg(-1) sample (toothpaste) to 280.78 ± 8.19 mg.kg(-1) sample (perfumed body cream), which may correspond to a significant estimated daily human dermal exposure of 904 μg.day(-1) . © 2013 Society of Cosmetic Scientists and the Société Française de Cosmétologie.

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vasista prasanth said...
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