Particles exposure detection and occupational health risk assessment of powder electrostatic spraying workshop
In order to explore the occupational exposure degree of particles in electrostatic spraying operation,two auto parts enterprises(A and R enterprises)were selected to detect the exposure level of particles in the workplace in real time,and the morphological analysis of particles was carried out.The deposition rate of particles in human respiratory tract was simulated and calculated,and the risk level was evaluated by using the control classification strategy of Stoffenmanager Nano model.The results show that the particles collected in the spraying workshop are mostly irregular crystals,which are mainly composed of carbon(C)and oxygen(O)elements,and contain a variety of metal elements,including aluminum(Al),nickel(Ni),zinc(Zn),etc.The individual average number concentration of A and R enterprises are 29 565 and 88 337 particles/cm3.The av-erage mass concentrations of PM1.0 in enterprises A,R and environmental background are 0.123,0.335 and 0.063 mg/m3,respectively.The mass concentrations of particles in enterprises are all higher than that in environmental background,and there are statistical difference.According to the evaluation of Stoffenmanager Nano model,the risk level of A and R enterprises are both the high-risk level.The research results can provide specific data support and methodological reference for particles exposure detection and occupational health risk assessment in the electrostatic spraying workplaces.
fine and ultrafine particleselectrostatic sprayingexposure monitoringrisk assessmentoccupational health
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NSTL
万方数据
