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SPATIAL VARIABILITY OF HEAVY METAL CONCENTRATIONS IN RESPIRABLE SUSPENDED PARTICULATE MATTER IN AMBIENT AIR IN HYDERABAD CITY
Sagareswar, Gummineni1, Yayakumar, I.1, Hima Bindu, V.1, Mukunda Rao, P. V.1, Ramani2, and Anjaneyulu, Y.3; 1Centre for Environment, IST, J.N.T.University, Hyderabad, India. 2Joint Chief Environmental Scientist – APPCB, Hyderabad, India 3 Institute of Science and Technology, J.N.T University, Hyderabad, India

ABSTRACT

A consensus has been emerging among public health experts that air pollution, even at current ambient levels, aggravates respiratory and cardiovascular diseases and leads to penetrate mortality. Recent studies have also presented well-founded assumptions concerning the biological mechanisms involved and the groups of people that are probably more susceptible to PM. There are also reports of several acute damages caused especially due to the heavy metals present in TSP. Hence appropriate and accurate qualitative analytic technique should be employed to get the accurate value so that proper control measure can be devised. In order to trace the pollution sources and determine the extent of anthropogenic combustion, a fundamental study of physico-chemical characteristics of particulates and their mass size distribution of TSP is carried out in Hyderabad. Quantitative and qualitative analysis is employed for assessing TSP. Quantitative analysis is done in a series of steps. First of which is extraction method, in which the water soluble extracts like Cl-, SO42-,Mg, etc., and acid soluble extracts for Arsenic*, Selenium*, Zinc, Cadmium*, Lead*, Cobalt*, Nickel*, Iron, Boron, Manganese*, Chromium, Copper. The chemical components of acid soluble extracts are studied by Inductively Coupled plasma (ICP), which gives the quantity of each metal present.

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