Assessment of air quality after the implementation of compressed natural gas (CNG) as fuel in public transport in Delhi, India.

Environmental Monitoring and Assessment
Khaiwal RavindraRené Van Grieken

Abstract

Public transport in Delhi was amended by the Supreme Court of India to use Compressed Natural Gas (CNG) instead of diesel or petrol. After the implementation of CNG since April 2001, Delhi has the highest fraction of CNG-run public vehicles in the world and most of them were introduced within 20 months. In the present study, the concentrations of various criteria air pollutants (SPM, PM(10), CO, SO(2) and NO(x)) and organic pollutants such as benzene, toluene, xylene (BTX) and polycyclic aromatic hydrocarbons (PAHs) were assessed before and after the implementation of CNG. A decreasing trend was found for PAHs, SO(2) and CO concentrations, while the NO(x) level was increased in comparison to those before the implementation of CNG. Further, SPM, PM(10), and BTX concentrations showed no significant change after the implementation of CNG. However, the BTX concentration demonstrated a clear relation with the benzene content of gasoline. In addition to the impact of the introduction of CNG the daily variation in PAHs levels was also studied and the PAHs concentrations were observed to be relatively high between 10 pm to 6 am, which gives a proof of a relation with the limited day entry and movement of heavy vehicles in Delhi.

References

Aug 29, 2003·Environmental Monitoring and Assessment·Khaiwal RavindraC P Kaushik
Dec 22, 2004·Journal of Tropical Pediatrics·Umesh Kapil, Preeti Singh

❮ Previous
Next ❯

Citations

Nov 11, 2009·Environmental Monitoring and Assessment·Hueiwang Anna Jeng
Jan 1, 2011·Journal of Environmental Sciences (China)·Guangshui NaZiwei Yao
Jan 6, 2016·Environmental Science and Pollution Research International·Monika FabiańskaJan Konieczyński
Apr 1, 2009·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Sohail EjazChae Woong Lim
May 8, 2015·Journal of the Air & Waste Management Association·Saikat GhoshMugdha Nayak
May 14, 2016·The Science of the Total Environment·Wiebke WarnerTobias Licha
Apr 9, 2008·The Science of the Total Environment·Khaiwal RavindraRené Van Grieken
Aug 17, 2016·The Science of the Total Environment·Yang WangKe Du
Nov 3, 2009·Environment International·C KornartitKhaiwal Ravindra
Mar 5, 2017·Archives of Environmental Contamination and Toxicology·Ana C AmarilloHebe Carreras
Nov 30, 2016·The Science of the Total Environment·Shiyong Qiu, Nikhil Kaza
Feb 20, 2014·International Journal of Occupational Medicine and Environmental Health·Marija JevtićMilka Popović
Dec 7, 2019·Environmental Science and Pollution Research International·Amit KumarBalram Ambade
Feb 16, 2020·Environmental Science and Pollution Research International·Khaiwal RavindraRene Van Grieken
Sep 18, 2016·Environmental Science and Pollution Research International·Mihriban Yılmaz Civan, U Merve Kara
May 21, 2019·The Cochrane Database of Systematic Reviews·Jacob BurnsEva Rehfuess
May 8, 2018·Environmental Science and Pollution Research International·Anita Urszula LewandowskaLucyna Falkowska
Oct 19, 2017·Environmental Science and Pollution Research International·Nitin BhargavaKhaiwal Ravindra
Aug 2, 2020·The Science of the Total Environment·Anna ToblerAndré S H Prévôt
Jan 9, 2021·Environmental Science and Pollution Research International·Khaiwal RavindraSuman Mor
Sep 5, 2008·Environmental Science & Technology·Conor C O Reynolds, Milind Kandlikar
Feb 4, 2022·Inhalation Toxicology·Saurabh SonwaniP S Khillare

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.