Analysing heavy metals using laser induced breakdown spectroscopy technique

Analyzing heavy metals in polluted water using conventional method by chemical technique is difficult because sample preparation involves a lot of chemical. As an alternative to overcome the drawback, laser induced breakdown spectroscopy is introduced. The aims of this project is to analyze heavy me...

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Main Author:	Badruzzaman, Aishah
Format:	Thesis
Language:	English
Published:	2012
Subjects:	QH Natural history
Online Access:	http://eprints.utm.my/id/eprint/31873/1/AishahBadruzzamanMFS2012.pdf
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id	my-utm-ep.31873
record_format	uketd_dc
spelling	my-utm-ep.318732017-09-21T04:07:48Z Analysing heavy metals using laser induced breakdown spectroscopy technique 2012-11 Badruzzaman, Aishah QH Natural history Analyzing heavy metals in polluted water using conventional method by chemical technique is difficult because sample preparation involves a lot of chemical. As an alternative to overcome the drawback, laser induced breakdown spectroscopy is introduced. The aims of this project is to analyze heavy metals commonly found in sea water using a q-switched Nd:YAG laser. The laser was focused using two lenses, concave lens was used to diverge the beam and then bring to merge by camera lens with wide angle of 28 mm focal length. An optical breakdown occurred associated with plasma formation at the focal point. Heavy metal sample comprised of solid form and powder. The powder sample was deposited on glass slide by PVD technique. The heavy metal sample was located at the focal point in the air and exposed by laser in repetitive mode with frequency of 10 Hz. The plume plasma formation on the metal sample was visualized using CCD camera. The spectrum produced after laser-metal interactions were recorded via spectrum analyzer. The line spectra were manifested on the screen and analyzed by comparing to data base. Each line represents the element contained in the tested metal. The highest signal indicates the major element contains from the tested heavy metal. Finally, the analyzed heavy metals were summarized in a histogram for comparison purposes. 2012-11 Thesis http://eprints.utm.my/id/eprint/31873/ http://eprints.utm.my/id/eprint/31873/1/AishahBadruzzamanMFS2012.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QH Natural history
spellingShingle	QH Natural history Badruzzaman, Aishah Analysing heavy metals using laser induced breakdown spectroscopy technique
description	Analyzing heavy metals in polluted water using conventional method by chemical technique is difficult because sample preparation involves a lot of chemical. As an alternative to overcome the drawback, laser induced breakdown spectroscopy is introduced. The aims of this project is to analyze heavy metals commonly found in sea water using a q-switched Nd:YAG laser. The laser was focused using two lenses, concave lens was used to diverge the beam and then bring to merge by camera lens with wide angle of 28 mm focal length. An optical breakdown occurred associated with plasma formation at the focal point. Heavy metal sample comprised of solid form and powder. The powder sample was deposited on glass slide by PVD technique. The heavy metal sample was located at the focal point in the air and exposed by laser in repetitive mode with frequency of 10 Hz. The plume plasma formation on the metal sample was visualized using CCD camera. The spectrum produced after laser-metal interactions were recorded via spectrum analyzer. The line spectra were manifested on the screen and analyzed by comparing to data base. Each line represents the element contained in the tested metal. The highest signal indicates the major element contains from the tested heavy metal. Finally, the analyzed heavy metals were summarized in a histogram for comparison purposes.
format	Thesis
qualification_level	Master's degree
author	Badruzzaman, Aishah
author_facet	Badruzzaman, Aishah
author_sort	Badruzzaman, Aishah
title	Analysing heavy metals using laser induced breakdown spectroscopy technique
title_short	Analysing heavy metals using laser induced breakdown spectroscopy technique
title_full	Analysing heavy metals using laser induced breakdown spectroscopy technique
title_fullStr	Analysing heavy metals using laser induced breakdown spectroscopy technique
title_full_unstemmed	Analysing heavy metals using laser induced breakdown spectroscopy technique
title_sort	analysing heavy metals using laser induced breakdown spectroscopy technique
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2012
url	http://eprints.utm.my/id/eprint/31873/1/AishahBadruzzamanMFS2012.pdf
_version_	1747815866192363520

Analysing heavy metals using laser induced breakdown spectroscopy technique

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