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由于对室内典型燃烧物质如燃香、蚊香、吸烟等所释放的颗粒物PM_(1.0)和PM_(2.5)污染特征的研究还很缺乏,故定量燃香、蚊香、香烟燃烧释放PM_(1.0)的散发特征有重要意义。首先在温度为23℃、相对湿度为40%的环境舱中对九种典型物质(3种燃香、3种香烟和3种蚊香)燃烧释放的颗粒物的逐时浓度采用TSI 8533便携式颗粒物仪分别进行了实时监测,然后利用质量平衡方程确定了不同物质燃烧产生PM_(1.0)的散发速率和散发因子,最后研究了舱内湿度和换气次数对PM_(1.0)散发特征量的影响。结果表明:1)九种燃烧物质释放的颗粒物主要以细微颗粒物PM_(1.0)为主,其中8种物质释放的PM_(1.0)在PM_(2.5)中的比例占到了99%以上。2)燃香、蚊香、香烟颗粒物PM_(1.0)的排放因子分别在9.274~33.384 mg/g、2.392~4.158 mg/g及11.026~16.585 mg/g之间。3)湿度升高,燃烧物释放的PM_(1.0)的排放速率与排放因子都会随之降低。换气次数增加,PM_(1.0)的排放速率增加,但排放因子几乎不变。结果可为深入研究典型物质燃烧释放PM_(1.0)的特征及污染控制提供基础数据。
Due to the lack of research on the pollution characteristics of particulate PM_ (1.0) and PM_ (2.5) released by indoor typical combustion materials such as incense, mosquito coils and smoking, the combustion of PM_ (1.0) Dissemination features are important. First, the hourly concentration of particulates released from combustion of nine typical substances (three kinds of burning incense, three kinds of cigarettes and three kinds of mosquito coils) in an environmental chamber at a temperature of 23 ° C and a relative humidity of 40% was measured by using a TSI 8533 portable particulate analyzer Then the mass balance equation was used to determine the emission rate and emission factor of PM 1.0 generated by combustion of different materials. Finally, the effect of humidity and the number of ventilation on PM 1 emission characteristic was studied. The results show that: 1) The PMs released by the nine kinds of combustion materials are mainly PM1 (1.0), and the PM1 (1.0) released by the eight materials accounts for more than 99% of the PM2.5. 2) The emission factor of PM_ (1.0) of the burning incense, mosquito-repellent incense and cigarette were 9.274 ~ 33.384 mg / g, 2.392 ~ 4.158 mg / g and 11.026 ~ 16.585 mg / g, respectively. 3) When the humidity is increased, the emission rate and emission factor of PM_ (1.0) released by the combustion products will decrease. Ventilation frequency increased, PM_ (1.0) emission rate increased, but the emission factor is almost unchanged. The results can provide basic data for in-depth study on the characteristics of PM 1.0 released by typical combustion and pollution control.