室内激光打印机污染物的释放特性

发布时间：2018-01-15 23:09

本文关键词：室内激光打印机污染物的释放特性　出处：《环境与职业医学》2017年11期 　论文类型：期刊论文

【摘要】：[目的]对办公场所激光打印机工作所产生的颗粒物、臭氧、总挥发性有机物(TVOC)的空气污染水平和各类污染物随时间的衰减规律进行研究。[方法]使用纳米粒子粒径谱仪、超细粒子计数器、双紫外光臭氧检测仪、挥发性有机物检测仪对山东省某办公场所三个品牌的打印机工作时产生的颗粒物、臭氧、TVOC的水平以及颗粒物粒径分布进行检测。[结果]打印机工作时产生的颗粒物水平(34 783个/m~3)远远大于室内空气的本底值(6 843个/m~3),空气中的臭氧(0.38 mg/m~3)和TVOC(2.38 mg/m~3)水平的均值均超过了GB/T 18883—2002《室内空气质量标准》的限值(臭氧:0.16 mg/m~3;TVOC:0.60 mg/m~3)。打印机产生的颗粒物以超细颗粒物为主(粒径范围为10~238 nm),其中49 nm粒径以下颗粒占总颗粒数的比例超过了37%,116 nm粒径以下颗粒占总颗粒数的比例超过92%。打印工作结束后的2~3 min内,颗粒物、臭氧水平降低到接近环境本底的水平;TVOC衰减较慢,10 min后水平仍维持在较高水平(0.14~0.19 mg/m~3)。[结论]打印机产生的颗粒物以粒径116 nm为主。随着打印机工作量的增加,其产生的颗粒数、臭氧和TVOC水平增加。打印机产生的颗粒物和臭氧水平的衰减较快,TVOC的水平衰减相对较慢,对室内空气质量有长时间的不良影响。
[Abstract]:[Objective] to study the air pollution level of particulate matter, ozone and total volatile organic compounds (TVOC) produced by laser printer in office. [Methods] Particle size spectrometer, ultrafine particle counter, double ultraviolet ozone detector and volatile organic compounds detector were used to detect particulate matter produced by printers of three brands in an office in Shandong Province. The level of TVOC and particle size distribution were measured. [Results] the level of particulate matter produced by the printer was 34,783 / mm3), which was much higher than that of indoor air (6.843 / mm3). Ozone in the air 0. 38 mg / m ~ (3) and TVOC(2.38 mg / m ~ (3). The mean values of the levels exceeded the limit of GB/T 18883-2002 (ozone: 0.16 mg / mm3; TVOC:0.60 mg / m ~ (3). The particles produced by the printer were mainly ultrafine particles (the particle size range was 10 ~ 238nm). The proportion of particles below 49 nm in the total number of particles is more than 37%. The ratio of particle size below 116nm to the total number of particles was more than 92.The level of particulate matter and ozone decreased to the level of environmental background within 2 ~ 3 min after printing. After 10 min of TVOC decay, the level remained at a high level of 0.140.19 mg 路m ~ (-1) 路m ~ (3) 路m ~ (-1) 路m ~ (-1) ~ (-1). [Conclusion: the particle size of printer is 116nm and the number of particles produced by printer increases with the increase of printer workload. The decaying of particulate matter and ozone level produced by printer is faster than that of TVOC level, and the attenuation of TVOC level is relatively slow, which has a long-term adverse effect on indoor air quality.
【作者单位】：山东省疾病预防控制中心职业与环境卫生监测评价所;
【分类号】：R122
【正文快照】： 随着信息化、数字化时代的到来,打印机、复印机等办公设备广泛地应用于人们的工作和生活中,也逐渐成为室内空气污染的重要污染源之一,对人体造成潜在危害[1]。激光打印机采用电晕放电的原理,让硒鼓带电,吸附墨粉成像,在这个过程中,高压电荷电离空气中的氧气产生臭氧。墨粉定影

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