Detection of elements in slimming tea product by using laser induced breakdown spectroscopy

Laser induced breakdown spectroscopy (LIBS) has been applied to determine the element content in slimming tea product. A Q-switched Nd:YAG laser operating at 1064 nm and generating 93.7 mJ per pulses was employed to excite the pellet sample and the fluorescence emission was analyzed via spectrum ana...

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Main Author:	Safie, Saleha
Format:	Thesis
Language:	English
Published:	2014
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/50790/1/SalehaSafieMFS2014.pdf
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spelling	my-utm-ep.507902020-07-12T05:46:47Z Detection of elements in slimming tea product by using laser induced breakdown spectroscopy 2014-08 Safie, Saleha QC Physics Laser induced breakdown spectroscopy (LIBS) has been applied to determine the element content in slimming tea product. A Q-switched Nd:YAG laser operating at 1064 nm and generating 93.7 mJ per pulses was employed to excite the pellet sample and the fluorescence emission was analyzed via spectrum analyzer. The induced spectral lines were compared with National Institute of Standards and Technology (NIST) database to identify the element. A commercial slimming tea was used as sample to be investigated whereas the natural tea leaves were used as control. The LIBS results showed that both slimming tea and natural tea leaves contain several elements including iron (Fe), sodium (Na), chromium (Cr), cobalt (Co), calcium (Ca), manganese (Mn), magnesium (Mg), silicon (Si), sulfur (S), titanium (Ti), nickel (Ni) and cesium (Cs). However, higher intensity of elements was found in slimming tea spectrum compared to natural tea leaves. The plasma temperatures calculated using Boltzmann plot were found to be 13588.95 K and 12319.50 K for slimming tea and tea leaves samples respectively whereas the electron density for slimming tea and tea leaves samples were 7.46 × 1016 cm-3 and 15.91 × 1016 cm-3, respectively. The plasma produced by this LIBS system was found to be in local thermodynamic equilibrium (LTE) condition after evaluating these plasma parameters. Quantitative analysis performed by using inductively coupled plasma mass spectroscopy (ICPMS) proved that the concentration of the elements is higher in slimming tea than in natural tea leaves. 2014-08 Thesis http://eprints.utm.my/id/eprint/50790/ http://eprints.utm.my/id/eprint/50790/1/SalehaSafieMFS2014.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:87904 masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Safie, Saleha Detection of elements in slimming tea product by using laser induced breakdown spectroscopy
description	Laser induced breakdown spectroscopy (LIBS) has been applied to determine the element content in slimming tea product. A Q-switched Nd:YAG laser operating at 1064 nm and generating 93.7 mJ per pulses was employed to excite the pellet sample and the fluorescence emission was analyzed via spectrum analyzer. The induced spectral lines were compared with National Institute of Standards and Technology (NIST) database to identify the element. A commercial slimming tea was used as sample to be investigated whereas the natural tea leaves were used as control. The LIBS results showed that both slimming tea and natural tea leaves contain several elements including iron (Fe), sodium (Na), chromium (Cr), cobalt (Co), calcium (Ca), manganese (Mn), magnesium (Mg), silicon (Si), sulfur (S), titanium (Ti), nickel (Ni) and cesium (Cs). However, higher intensity of elements was found in slimming tea spectrum compared to natural tea leaves. The plasma temperatures calculated using Boltzmann plot were found to be 13588.95 K and 12319.50 K for slimming tea and tea leaves samples respectively whereas the electron density for slimming tea and tea leaves samples were 7.46 × 1016 cm-3 and 15.91 × 1016 cm-3, respectively. The plasma produced by this LIBS system was found to be in local thermodynamic equilibrium (LTE) condition after evaluating these plasma parameters. Quantitative analysis performed by using inductively coupled plasma mass spectroscopy (ICPMS) proved that the concentration of the elements is higher in slimming tea than in natural tea leaves.
format	Thesis
qualification_level	Master's degree
author	Safie, Saleha
author_facet	Safie, Saleha
author_sort	Safie, Saleha
title	Detection of elements in slimming tea product by using laser induced breakdown spectroscopy
title_short	Detection of elements in slimming tea product by using laser induced breakdown spectroscopy
title_full	Detection of elements in slimming tea product by using laser induced breakdown spectroscopy
title_fullStr	Detection of elements in slimming tea product by using laser induced breakdown spectroscopy
title_full_unstemmed	Detection of elements in slimming tea product by using laser induced breakdown spectroscopy
title_sort	detection of elements in slimming tea product by using laser induced breakdown spectroscopy
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2014
url	http://eprints.utm.my/id/eprint/50790/1/SalehaSafieMFS2014.pdf
_version_	1747817535396380672

Detection of elements in slimming tea product by using laser induced breakdown spectroscopy

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