臭氧空气净化器对甲醛、苯净化效果的实验研究

Experimental Study on Efficiency of Ozone Air Cleaner for Purifying Formaldehyde and Benzene in Indoor Air

目的研究某型臭氧空气净化器的两种机型对模拟现场空气中甲醛、苯的净化效率 ,了解其净化效果。方法采用模拟现场加入人工喷洒受试物质的方法 ,使用甲醛、苯试剂在试验室内分别按0 4mg/m3进行喷洒 ,再经密闭0 5h自然挥发及平衡后 ,在开机0 5h、1h、2h以个体采样器分别使用酚试剂吸收液及活性炭管采样分析。结果该臭氧型空气净化器在温度12 4℃～14 8℃、湿度36 3℃～48 2℃的范围内 ,小片型开机0 5h、1h、2h对模拟现场内苯的有效净化率分别为9 24 %、44 42 %、55 99 % ;对甲醛的有效净化率分别为3 19 %、6 79 %、10 41 %。双片型开机0 5h、1h、2h对苯的有效净化率分别为58 81 %、62 74 %72 00 % ;对甲醛的有效净化率分别为6 57 %、7 53 %、11 20 %。结论该型空气净化器对室内空气中有害气体苯、甲醛有一定的净化作用。由于甲醛、苯可吸附在墙面 。

Objective To strdy the purifying efficiency of two types of a certain brand of ozone air cleaner to decontaminate gases of formaldehyde and benzene in simulated rooms air.Methods Formaldehyde and benzene were sprayed in the space of simulated tested rooms according to the concentration of 0.4mg/m3 respectively:then the tested rooms were airtightened for 0.5 h till the end of natural volatilization and the concentrations of tested chemicals in room air becoming stable.The air sampling was carried out by personal samplers with hydroxybenzene absorbents and active carbon sampling tube at the 30th minute,1st hour and 2nd hour after the running of two types of air cleaners.Results The temperatures and relative humidities of the simulated tested rooms were 12.4℃～14.8℃ and 36.3%℃～48.2℃ respectively.At the 30th minute,1st hour and 2nd hour after the starting of air purifying cleaner,the purifying efficiencies of air cleaner with single-slice pottery were 9.24%,44.42%and 55.99% for benzene, and 3.19%,6.79%,10.41% for formaldehyde respectively,the purifying efficiencies of air cleaner with double-slice pottery were 58.81%,62.74% and 72.99% for benzene,and 6.57%,7.53%,11.20% for fomaldehyde respectively.Conclusicn These two types of air cleaners presented a certain purifying efficiencies to hazardous gases such as benzene and formaldehyde in indoor air.The air cleaner need run continuously to maintain the prifying efficiencies dew to the continual release of partial hazardous gases of formaldehyde and benzene in indoor air adsorpted on wall surface.