Parmi les articles sur les risques chimiques repérés dernièrement, deux qui se préoccupent des expositions à des produits en combinaison et deux sur la qualité de l’air.
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Taking Multiple Exposure Into Account Can Improve Assessment of Chemical Risks.
During work, operators may be exposed to several chemicals simultaneously. Most exposure assessment approaches only determine exposure levels for each substance individually. However, such individual-substance approaches may not correctly estimate the toxicity of « cocktails » of chemicals, as the toxicity of a cocktail may differ from the toxicity of substances on their own. This study presents an approach that can better take into account multiple exposure when assessing chemical risks. Almost 30000 work situations, monitored between 2005 and 2014 and recorded in two French databases, were analysed using MiXie software. The algorithms employed in MiXie can identify toxicological classes associated with several substances, based on the additivity of the selected effects of each substance. The results of our retrospective analysis show that MiXie was able to identify almost 20% more potentially hazardous situations than identified using a single-substance approach. It therefore appears essential to review the ways in which multiple exposure is taken into account during risk assessment.
Source : Clerc, F., Bertrand, N. J. H., & La Rocca, B. (2017). Annals of Work Exposures and Health, 62(1), 53‑61.
Respiratory Symptoms in Hospital Cleaning Staff Exposed to a Product Containing Hydrogen Peroxide, Peracetic Acid, and Acetic Acid.
Cleaning and disinfecting products consisting of a mixture of hydrogen peroxide (HP), peracetic acid (PAA), and acetic acid (AA) are widely used as sporicidal agents. HP and PAA are strong oxidants and their mixture is a recognized asthmagen. However, few exposure assessment studies to date have measured HP, PAA, and AA in a health care setting. In 2015, we performed a health and exposure assessment at a hospital where a new sporicidal product, consisting of HP, PAA, and AA was introduced 16 months prior. Our results suggest that exposure to a product containing HP, PAA, and AA contributed to eye and respiratory symptoms reported by hospital cleaning staff at low levels of measured exposure.
Source : Hawley, B., Casey, M., Virji, M. A., Cummings, K. J., Johnson, A., & Cox-Ganser, J. (2017). Annals of Work Exposures and Health, 62(1), 28‑40.
C’est la faute au CO2.
Si on s’endort pendant les réunions ou si les enfants sont somnolents pendant l’école, c’est la faute au CO2. Cet article aborde le CO2, ses effets sur l’humain, ses propriétés, les sources naturelles et industrielles, la technologie pour la détection et la mesure et conclut sur quelques recommendations.
Source : Rousseau, C. (2017, décembre). Travail et Santé, Guide source en SST 2018. Consulté à l’adresse http://travailetsante.net/wp-content/uploads/2017/12/TS05-TRAVAIL-ET-SANTE-GUIDE-SOURCE-2018.pdf#page=26
Phthalate and non-phthalate plasticizers in indoor dust from childcare facilities, salons, and homes across the USA.
The quality of indoor environment has received considerable attention owing to the declining outdoor human activities and the associated public health issues. The prolonged exposure of children in childcare facilities or the occupational exposure of adults to indoor environmental triggers can be a culprit of the pathophysiology of several commonly observed idiopathic syndromes. This study reveals, for the first time, a more elevated (∼3 folds) occupational intake of phthalate and non-phthalate plasticizers through the indoor dust at salons (214 and 285 ng/kg-bw/day, respectively) than at homes in the USA.
Source : Subedi, B., Sullivan, K. D., & Dhungana, B. (2017). Environmental Pollution, 230, 701‑708.