Inhalation exposure to nanosized aerosols of disinfectants for the application of continuous releasing sprayers and fogger
INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH(2024)
摘要
This study aimed to investigate the airborne exposure to aerosols according to the particle size distribution of three different spray types (nano-nozzled spray gun, low-temperature steam spray, and fogger) and compare the concentrations of inhaled aerosols between children and adults. Airborne aerosols released from three products were observed using size-segregated particle measurements, and particle concentrations deposited in the respiratory tracts of adults and children were estimated using multi-path particle dosimetry lung deposition models. All types of sprayers generated the most nanoparticles (similar to 100 nm). Due to their higher respiratory rate than adults, a larger number of particles <1.0 mu m deposited in the children's respiratory tracts was higher. The sequences of the total number of particles in the respiratory regions after spraying nano-nozzled spray gun and fogger were alveolar (AL)>tracheobronchial (TB)>head airway (HA) in adults and AL>HA>TB in children. Meanwhile, the trend of low-temperature steam spray was AL>TB>HA in adults and AL>TB>HA in children.
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关键词
Inhalation exposure,spray-type disinfectant,continuous release,droplet size
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