Spatial and Temporal
variations of Organic Chemical compounds in Ambient Air from Ahmedabad City, Gujarat,
India
Bhakhar Himalay, Kumar Rita N., Shah Shwetal and Kumar Nirmal J.I.
Res. J. Chem. Environ; Vol. 27(9); 28-38;
doi: https://doi.org/10.25303/2709rjce028038; (2023)
Abstract
Organic contaminants linked to atmospheric particulate matter have been a major
source of worry across the world since the last decade. The ambient air samples
were collected from three sites in Ahmedabad city for spatial and temporal variation
using a High-Volume Air Sampler (HVAS) to examine the morphology and elemental composition
of fine and ultrafine particles by using a Scanning electron microscope (SEM) and
an energy dispersive X-ray system (EDAX) from PM2.5. The Si, C, O, Cl, Na, Al, K,
Ca and Mg were found to be quite abundant in the EDAX spectra. Transition elements
such as Ti, Zn, Cu, S and Fe were registered, indicating the influence of industry
in liberating the abundance of fine and ultrafine particles.
In addition, the organic chemical compounds were screened by using GC–MS. A total
of 230 organic chemicals were detected, including 187 aliphatic and 43 aromatic
chemical compounds at three different locations. Results show that aliphatic and
aromatic hydrocarbon compounds were found maximum in the urban area followed by
industrial and rural areas.
