a Department of Environmental Science and Engineering , Indian Institute of Technology (Indian School of Mines) , Dhanbad , India.
b Department of Environmental Science and Engineering , Marwadi Education Foundation's Group of Institutions , Rajkot (GTU) , India.
Int J Environ Health Res. 2018 Aug;28(4):419-431. doi: 10.1080/09603123.2018.1481498. Epub 2018 Jun 11.
Present study reports the characterization results of settled dust particles in different indoor micro-environments of an academic institution in India. Field emission scanning electron microscope analysis of indoor dust revealed the presence of mineral particles, fly ash, and soot particles of different morphologies. Energy-dispersive X-ray spectroscopy analysis of indoor dust indicated that crystal particles are comprised of elements such as C, O, Na, Mg, Al, Si, S, Cl, K, Ca, Fe, and Ti. These elements accounted for more than 99% of the samples. The average content of O (42.7%) and C (18.9%) in the dust particles was found to be higher than their natural abundances. The concentrations of PM, PM, and PM were observed in the range of 88-58, 37-33, 23-29 µg/m, respectively. Except temperature, other parameters such as volatile organic carbon, carbon dioxide concentration, and relative humidity were found to be within comfort limits of American Society of Heating, Refrigerating, and Air-Conditioning Engineers.
ASHRAE: American Society of Heating, Refrigerating, and Air-Conditioning Engineers; CO: carbon dioxide; COPD: chronic obstructive pulmonary disease; EDX: energy-dispersive X-ray; FESEM: field emission scanning electron microscope; FTIR: Fourier transform infrared spectroscopy; IAP: indoor air pollution; IAQ: indoor air quality; HAP: household air pollution; OAP: outdoor air pollution; PM: particulate matter; VOC: volatile organic carbon; WHO: World Health Organization.
本研究报告了印度一学术机构不同室内微环境中沉降尘颗粒的特征化结果。室内灰尘的场发射扫描电子显微镜分析显示存在矿物颗粒、飞灰和不同形态的烟尘颗粒。室内灰尘的能谱分析表明晶体颗粒由 C、O、Na、Mg、Al、Si、S、Cl、K、Ca、Fe 和 Ti 等元素组成。这些元素占样品的 99%以上。发现灰尘颗粒中 O（42.7%）和 C（18.9%）的平均含量高于其自然丰度。PM、PM 和 PM 的浓度分别在 88-58、37-33 和 23-29μg/m 范围内。除温度外，挥发性有机碳、二氧化碳浓度和相对湿度等其他参数均在美国采暖、制冷与空调工程师学会舒适限值内。
ASHRAE：美国采暖、制冷与空调工程师学会；CO：二氧化碳；COPD：慢性阻塞性肺疾病；EDX：能谱分析；FESEM：场发射扫描电子显微镜；FTIR：傅里叶变换红外光谱；IAP：室内空气污染；IAQ：室内空气质量；HAP：家庭空气污染；OAP：室外空气污染；PM：颗粒物；VOC：挥发性有机碳；WHO：世界卫生组织。
