A5043371751- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric Ozone and Climate
- Vehicle emissions and performance
- Energy and Environment Impacts
- Toxic Organic Pollutants Impact
- Atmospheric aerosols and clouds
- Atmospheric and Environmental Gas Dynamics
- Climate variability and models
- COVID-19 impact on air quality
- Thermochemical Biomass Conversion Processes
- Energy, Environment, and Transportation Policies
- Heavy metals in environment
- Ionosphere and magnetosphere dynamics
- Radioactivity and Radon Measurements
- Soil Carbon and Nitrogen Dynamics
- Advanced Chemical Sensor Technologies
- Solar and Space Plasma Dynamics
- Impact of Light on Environment and Health
- Oil, Gas, and Environmental Issues
- Mercury impact and mitigation studies
- Cancer Immunotherapy and Biomarkers
- Crop Yield and Soil Fertility
- Environmental and Industrial Safety
CSIR National Physical Laboratory of India
2016-2025
Council of Scientific and Industrial Research
2015-2024
Academy of Scientific and Innovative Research
2017-2024
Vivekananda Institute of Medical Sciences
2024
National Physical Laboratory
2003-2023
Indira Gandhi Delhi Technical University for Women
2022-2023
National Measurement Laboratory
2020
ICFAI University, Dehradun
2020
G.B. Pant Institute of Himalayan Environment and Development
2017
Bidhan Chandra Krishi Viswavidyalaya
2013
Air pollution impacts on human health are of serious concern in northern India, and over the Delhi National Capital Region (NCR) particular. The Kharif crop residue burning (CRB) is often blamed for degradation Delhi-NCR's seasonal air quality. However, concentration fine particulate matter (PM2.5) remained stable Delhi, while fire detection counts (FDCs) from satellites Punjab Haryana declined by 50% or more during 2015–2023. We measured PM2.5, carbon monoxide (CO) related parameters...
Abstract. Twenty-nine different fuel types used in residential dwellings northern India were collected from across Delhi (76 samples total). Emission factors of a wide range non-methane volatile organic compounds (NMVOCs) (192 total) measured during controlled burning experiments using dual-channel gas chromatography with flame ionisation detection (DC-GC-FID), two-dimensional (GC × GC-FID), proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS) and solid-phase extraction...
Abstract. Biomass burning emits significant quantities of intermediate-volatility and semi-volatile organic compounds (I/SVOCs) in a complex mixture, probably containing many thousands chemical species. These components are significantly more toxic have poorly understood chemistry compared to volatile routinely quantified ambient air; however, analysis I/SVOCs presents difficult analytical challenge. The gases particles emitted during the test combustion range domestic solid fuels collected...
Continuous measurements of surface O3 and its precursors (NO, NO2, CO, CH4 NMHCs) at an urban site Delhi, India during January 2012 to December 2013 are presented. In the present study, annual average mixing ratios O3, NO, NMHC were 30 ± 6 ppb, 24 15 4 1.5 0.4 ppm, 2.4 ppm 0.1 respectively. The maximum NO NO2 observed summer, whereas, minimum ambient monsoon seasons. have shown prominent diurnal variations all seasons observational Delhi. result reveals that was negatively correlated with...