Health & Environmental Research Online (HERO)


Print Feedback Export to File
2617641 
Book/Book Chapter 
Raman Spectroscopic Investigation Of Multicomponent Aerosols From The Environment Of SugarFactory 
Harpale, VM; Gosavi, RS 
2010 
Chemical Engineering Transactions 
22 
215-220 
WOS:000286970200035 
It is well understood fact that, the presence of aerosol can cause respiratory or cardiovascular diseases, enhacne the formation of cloud precipitation and affect the earth scattering and absorption of radiation. Because of the public health dangers, it is important to have accurate and sensitive analytical method for detection and chemical speciation of there particles. In this paper we will asses the laser Raman scattering and its application for the chemical identification of atmospheric aerosols collected from the environment of sugar factory in the month of march 2008 at the Rahuri in the state of Maharashtra(INDIA). In the application of Raman spectroscopic technique, a beam of monochromatic visible laser light is focused on the aerosol sample to obtain the Raman Spectra. This spectrum includes 25 independent Raman peaks representing 25 Raman frequencies which is represent various chemical Species present in the aerosol sample. As documented, all Raman peaks are found within Raman frequency range 521 cm(-1) to 3396 cm(-1). As illustrated in Spectra, (Not shown) three Raman peaks observed at 521 cm(-1), 572 cm(-1) and 760 cm(-1). show the presence of Aryl nitro compounds, however Raman peaks at 1015 cm(-1), 1066 cm(-1) and 1275 cm(-1) exhibit the occurrence of mono and di-sub compounds. Similarly, two peaks which are visible at 2367cm(-1), 2344cm(-1) are recognized as P-H str compounds. There are total nine Raman peaks ranging between 2514 cm(-1) to 3396 cm(-1) which are characterized as primary and secondary amides which seem to be the major compositioin of the aerosol samples. In addition to these, alkyl isocynate, Diesters are also found as trace elements which are the compounds of Amonia and Nitrogen. Thus, the aerosol samples constitute different types of elements which are far from being single component system. The technique developed in the present work has made it possible to identify the mixed salts which may be present in ambient aerosols, as a result of changing atmosphere conditions.