【摘要】 目的研究0.5%过氧乙酸室内消毒时在空气中的浓度变化。方法选取体积约为20m3的房间,分别在密闭、通风2种状态下用500ml0.5%的过氧乙酸消毒剂对该房间室内空气进行喷洒消毒,喷洒消毒剂后立即应用KC-6D型大气采样器进行采样,每个样品采样时间10～15min,每次连续采集7个样品,2种状态分别反复进行3次实验,并通过离子色谱仪分析环境样品。结果密闭状态下室内空气中过氧乙酸浓度开始时为6.24mg/m3,95min时测得室内过氧乙酸浓度为20.72mg/m3;密闭消毒30min后再进行通风,该状态下浓度开始时为6.92mg/m3,30min时测得室内过氧乙酸浓度为6.25mg/m3,通风60min测得最终过氧乙酸浓度为3.36mg/m3。结论密闭、通风两种状态下,以0.5%过氧乙酸消毒剂进行室内空气消毒时,其在空气中浓度变化分别呈现上升和下降趋势。更多还原

【Abstract】 Objective To observe the concentration change of 0.5% peracetic acid used as disinfectant in the indoor air. Methods KC-6D gas-sampler and ion chromatograph were employed and sampling interval time was 10-15 min, 7 samples were collected each time in both of the condition of closed and ventilated, the same experiment was repeated for 3 times. Results As the time went on, the concentration change of 0.5% peracetic acid in the indoor air increased from 6.24 mg/m3 to 20.72 mg/m3 in the condition of closed and decreased in the condition of ventilated from 6.92 mg/m3 to 3.36 mg/m3. Conclusion In a closed room of 20 m3, using 500 ml 0.5% peracetic acid, after 30 minutes of disinfection followed by 60 minutes of ventilation, the concentration of peracetic acid will be about 3.36 mg/m3 in the air of the room.更多还原