title: Statistical modeling of O3, NOx, CO, PM2.5, VOCs and noise levels in commercial complex and associated health risk assessment in an academic institution.
abstract: Indoor Air Quality (IAQ) is considered to be of great concern due to its adverse impact on the human health nowadays. The presence of different air pollutants along with noise may aggravate the IAQ. The present study attempts to examine IAQ in terms of major criteria air pollutants (O3, NOx=NO+NO2, CO and PM2.5) along with total volatile organic compound (TVOC), individual VOC and noise pollution in indoor and outdoor environment of a Commercial Shopping Complex (CSC) in Delhi. Real time measurements have been carried out for O3, NOx, CO, PM2.5, TVOC and noise while thirteen individual VOCs have been estimated using NIOSH method was performed using Gas Chromatograph. The study also aimed to find out the relationship among VOCs, source estimation using Principal Component Analysis. The observed results for the targeted pollutants were also compared with international and national recommended permissible values. The mean values of O3, NOx, CO, PM2.5and TVOC are found to be 17.6/(15.0) ppb, 15.8/(14.1) ppb, 8.4/(1.9) ppm, 125.4/(74.6) μg/m3and 412.5/(226.5) μg/m3for indoor/(outdoor), respectively. Among the individual VOC, toluene was the most abundant followed by xylene-isomers and benzene. The noise pollution level in Indoor/outdoor were found to be 51.5/46.4dB which is below the guideline value (65dB) provided by the WHO. Most of the pollutants were found to have indoor sources. The different kinds of pollutants and noise may have synergistic effect and aggravate the health of the people working and visiting the CSC.
authors: Jawaharlal Nehru University, New Delhi, India. Electronic address: deepaksingh1947@gmail.com.
authors: Deepak
authors: D
authors: Singh
authors: Central University of Jammu, Jammu, India.
authors: Amit
authors: A
authors: Kumar
authors: Jawaharlal Nehru University, New Delhi, India.
authors: Krishan
authors: K
authors: Kumar
authors: Jawaharlal Nehru University, New Delhi, India.
authors: Bupender
authors: B
authors: Singh
authors: Indian Agricultural Research Institute, New Delhi, India.
authors: Usha
authors: U
authors: Mina
authors: University of Delhi, New Delhi, India.
authors: Braj Bihari
authors: BB
authors: Singh
authors: Jawaharlal Nehru University, New Delhi, India.
authors: Vinod Kumar
authors: VK
authors: Jain
mesh_terms: D016902:Air Pollution, Indoor / Q000032:analysis*; D001554:Benzene / Q000032:analysis; D002248:Carbon Monoxide / Q000032:analysis*; D006801:Humans; D007194:India; D015233:Models, Statistical; D009589:Nitrogen Oxides / Q000032:analysis; D009622:Noise; D010126:Ozone / Q000032:analysis*; D052638:Particulate Matter / Q000032:analysis; D025341:Principal Component Analysis; D018570:Risk Assessment; D014050:Toluene / Q000032:analysis; D014495:Universities; D055549:Volatile Organic Compounds / Q000032:analysis*; D014992:Xylenes / Q000032:analysis
chemical_list: D009589:Nitrogen Oxides; D052638:Particulate Matter; D055549:Volatile Organic Compounds; D014992:Xylenes; D014050:Toluene; D010126:Ozone; D002248:Carbon Monoxide; D001554:Benzene
keywords: Commercial Shopping Complex; Criteria air pollutants; Exposure assessment; Noise; Principal Component Analysis; VOCs