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Goel, Vikas
- Effect of Reduced Traffic Density on Characteristics of Particulate Matter Over Delhi
Abstract Views :201 |
PDF Views:86
Authors
Vikas Goel
1,
Sumit Kumar Mishra
1,
Ajit Ahlawat
1,
Chhemendra Sharma
1,
N. Vijayan
1,
S. R. Radhakrishnan
1,
A. P. Dimri
2,
R. K. Kotnala
1
Affiliations
1 Environmental Sciences and Biomedical Metrology Division, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi - 110 012, IN
2 School of Environmental Sciences, Jawaharlal Nehru University, New Delhi - 110 067, IN
1 Environmental Sciences and Biomedical Metrology Division, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi - 110 012, IN
2 School of Environmental Sciences, Jawaharlal Nehru University, New Delhi - 110 067, IN
Source
Current Science, Vol 115, No 2 (2018), Pagination: 315-319Abstract
Road rationing policy, implemented in Delhi from 1 to 15 January 2016, reduced the traffic density. This particular event serves an opportunity to study the effect of reduced traffic density over particulate matter (PM) characteristics. The mean PM2.5 and black carbon (BC) mass concentration before, during and after the event were observed as 163.51 μg/m3 and 14.01 μg/ m3, 186.98 μg/ m3 and 19.87 μg/m3, 197.45 μg/m3 and 17.79 μg/m3 respectively. During the first week (1–7 January 2016), high PM2.5 mass concentration was observed while in the second week (8–15 January 2016), the concentration was relatively low. The concentration of elements like P, Cu, As and Pb was observed to be minimum during the event.Keywords
Black Carbon, Elemental Composition, PM2.5.Full Text
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- TiO2 nanoparticle-encapsulated polyacrylonitrile nanofibres as transparent air filters for indoor air quality
Abstract Views :159 |
PDF Views:75
Authors
Vikas Goel
1,
Sumit Kumar Mishra
2,
Ashish Gupta
3,
Jai S. Tawale
3,
Sanjay R. Dhakate
2,
Puneet Misra
4
Affiliations
1 CSIR-National Physical Laboratory, New Delhi 110 012, India; Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad 201 002, India; School of Interdisciplinary Research, Indian Institute of Technology Delhi, New Delhi 110 016, India, IN
2 CSIR-National Physical Laboratory, New Delhi 110 012, India; Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad 201 002, India, IN
3 CSIR-National Physical Laboratory, New Delhi 110 012, India, IN
4 All India Institute of Medical Sciences, New Delhi 110 029, India, IN
1 CSIR-National Physical Laboratory, New Delhi 110 012, India; Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad 201 002, India; School of Interdisciplinary Research, Indian Institute of Technology Delhi, New Delhi 110 016, India, IN
2 CSIR-National Physical Laboratory, New Delhi 110 012, India; Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad 201 002, India, IN
3 CSIR-National Physical Laboratory, New Delhi 110 012, India, IN
4 All India Institute of Medical Sciences, New Delhi 110 029, India, IN
Source
Current Science, Vol 123, No 12 (2022), Pagination: 1486-1492Abstract
Rapid industrialization and urbanization have increased air pollution, which poses a serious threat to human life. In megacities, the number of patients suffering from cardiovascular and respiratory diseases have increased rapidly. Face mask can be used for protection from outdoor air pollution, but indoor air quality can only be maintained through expensive, energy-inefficient air filtration devices. In the present study, nanofibrous polyacrylonitrile (PAN) filters encapsulated with titanium dioxide (TiO2) nanoparticles were developed using the electrospinning technique. The filters are porous and nearly transparent and therefore do not resist sunlight and airflow. Field testing of the PAN : TiO2 filters was done against the real aerosol particles and laboratory testing was done against ammonium sulphate particles. The field test results showed efficiency of about ~81% against total suspended aerosol particles (TSPM) and ~75% against laboratory generated particles. The TiO2 nanoparticles have been reported to kill the influenza virus and may help minimize an individual’s exposure to many harmful microbes due to their antimicrobial propertiesKeywords
Air pollution, antimicrobial properties, electro-spinning technique, nanofibrous filters, nanoparticles.Full Text
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