Chemical identification of semi-urban aerosols by laser raman spectroscopyView Crossref metadata(active tab) <div id="edit-xml" class="form-item form-type-item"> <?xml version="1.0"?> <doi_batch version="4.4.1" xmlns="http://www.crossref.org/schema/4.4.1" xmlns:jats="http://www.ncbi.nlm.nih.gov/JATS1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.crossref.org/schema/4.4.1 http://www.crossref.org/schemas/crossref4.4.1.xsd"><head><doi_batch_id>000689</doi_batch_id><timestamp>1713460580</timestamp><depositor><depositor_name>University of the Aegean</depositor_name><email_address>uoa@university.com</email_address></depositor><registrant>Global NEST Journal</registrant></head><body><journal><journal_metadata><full_title>Global NEST Journal</full_title><full_title>Global NEST: the international Journal</full_title><issn media_type="print">1790-7632</issn><issn media_type="electronic">2241-777X</issn></journal_metadata><journal_issue><titles><title>Issue 3</title></titles><publication_date><month>11</month><year>2024</year></publication_date><journal_volume><volume>8</volume></journal_volume><issue>3</issue></journal_issue><journal_article><titles><title>Chemical identification of semi-urban aerosols by laser raman spectroscopy</title></titles><abstract xmlns="http://www.ncbi.nlm.nih.gov/JATS1"><p>Atmospheric aerosols play an important role in local, regional meteorology, visibility, air pollution, haze formation and energy balance of radiation. These processes influence the climate directly or indirectly. Therefore, for increasing importance of aerosols in understanding the various environmental processes and public health; it is necessary to have accurate physical and chemical identification of these aerosols. The Raman scattering has only recently been demonstrated as potential analytical method for chemical identification of aerosol particles [1], [2]. This technique is used for the chemical identification of aerosol at Ahmednagar (INDIA). Various spectroscopic techniques have been applied for the identification of the matter, while most of these techniques can be adopted as a routine analytical procedures for bulk samples. They may not be practical for aerosol samples at all. Each of these techniques has its advantages and disadvantages. For in situ identification of aerosol particles, however, Raman scattering is currently the most promising technique. It has small scattering cross-section but large number of advantages. We have explored the use of Raman Spectroscopy for the identification of aerosol particles of urban, rural, and industrial areas. The aerosol samples are collected on pure quartz filters with high volume aerosol sampler and Raman spectra is obtained using Raman spectrometer. It uses double monochromator with diffraction grating having 1800 grooves/mm and diode laser (532nm wavelength) with 25mW Power. The spectra of aerosol samples are collected in the perpendicular direction to the incident laser beam from the surface of filter containing aerosols. Thus, the various aerosol samples have been investigated for their chemical speciation. The Raman spectra for atmospheric aerosols appears in the region 607cm-1 to 937cm-1. The peaks at 607cm-1and 647cm-1 [3] correspond to Ammonium sulphate and Ammonium bicarbonates present in environmental aerosols respectively. In addition to this the Raman shifts at 847cm-1and 937cm-1are equivalent to potassium bisulphate and potassium chlorate. These are the major chemical species present in the semi-urban environment of Ahmednagar city. This region is dominated by low rainfall; dry weather and having relative humidity around 40%. The region is surrounded by the agriculture land producing sugarcane as a major agriculture crop. Hence, the aerosol chemical identification of this region would be an additional contribution to the data on aerosols. </p></abstract><publication_date><month>04</month><day>29</day><year>2013</year></publication_date><pages><first_page>260</first_page><last_page>264</last_page></pages><publisher_item><identifier id_type="pii">355</identifier></publisher_item><doi_data><doi>10.30955/gnj.000355</doi><timestamp>1713460580</timestamp><resource>https://journal.gnest.org/publication/355</resource></doi_data></journal_article></journal></body></doi_batch> </div>
