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The ConsExpo spray model - Modelling and experimental validation of the inhalation exposure of consumers to aerosols from spray cans and trigger sprays

Het spuitmodel in ConsExpo

Synopsis

The National Institute for Public Health and the Environment (RIVM) has commissioned research on the exposure characteristics of propellant sprays and trigger sprays. The results have been used to improve the ConsExpo spray model. This model calculates the human exposure that arises following the use of propellant sprays and trigger sprays. ConsExpo is a computer program that is used internationally to assess the exposure of consumers to substances in consumer products. The program includes several models that simulate the exposure and uptake of substances through the skin, mouth and by inhalation. The validation of models based on experimental research is essential to improve the reliability of the exposure assessment. To validate the spray model, RIVM commissioned the research institute TNO to conduct experiments on sprays. The research was funded by the Dutch Food and Consumer Product Safety Authority (VWA). Several characteristics of spray products determine the level of exposure. The most important of these are the mass generation rate of the emitted product, and the size of the generated particles. In the research, these characteristics were determined for 23 spray cans and trigger sprays. Subsequently, the exposure of 9 of these products was simulated during use. To this end, the sprays were used in a sealed room, and over a certain period of time the air concentrations and particle sizes were monitored at different positions in the room.
 

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