TY  - THES
AU  - Živković, Sanja M.
PY  - 2019
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=7653
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:22808/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=23396873
UR  - https://nardus.mpn.gov.rs/handle/123456789/17524
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4387
AB  - Спектроскопија ласерски индуковане плазме (LIBS) је аналитичка техника која омогућава брзу, мултиелементалну анализу свих врста материјала, најчешће без потребе за претходном припремом узорака, у реалном времену и на лицу места. Ова савремена метода хемијске анализе у складу је са принципима зелене аналитичке хемије јер не захтева употребу агресивних и потенцијално токсичних хемикалија. Примарни циљ ове дисертације је испитивање аналитичких могућности оригиналног лабораторијског LIBS система за квалитативну и квантитативну анализу различитих чврстих узорака, као што су металне легуре, геолошки узорци и прашкасти биљни узорци. Развијени LIBS систем користи зрачење ТЕА CO2 ласера за индуковање плазме, а за анализу зрачења плазме временски-интеграљену просторно-разложену спектроскопију. У циљу проналажења оптималних услова за спектрохемијску примену ласером индуковане плазме, испитан је утицај енергије ласерског зрачења, састава и притиска околног гаса, начина фокусирања и других параметара на карактеристике и спектралну емисију плазме. Развијен је начин припреме синтетичких стандарда за квантитативну анализу узорака код којих не постоје адекватни сертификовани референтни материјали. Такође, испитана је могућност примене методе стандардног додатка комбиноване са методама нормализације за побољшање тачности одређивања концентрације аналита. Сви резултати добијени LIBS методом потврђени су применом стандардне ICP-OES технике. Учешћем у 2. интерлабораторијском међународном LIBS поређењу показано је да је систем на бази ТЕА CO2 ласера по аналитичким перформансама у потпуности упоредив а за поједине елементе чак и бољи у односу на комерцијалне LIBS уређаје.
AB  - Laser-induced breakdown spectroscopy (LIBS) is an analytical technique for fast, multi-element analysis of any kind of material, most often without preliminary preparation, in real time and on-site. This modern analytical method is in accordance with the principles of green analytical chemistry because it does not require the use of aggressive and potentially toxic chemicals. The main aim of this thesis is to investigate the analytical capability of originally developed TEA CO2 based LIBS system, for qualitative and quantitative analysis of various types of solid samples (metal alloys, geological samples and powdered plant materials). In LIBS system, TEA CO2 laser irradiation was used for plasma generation while time-integrated spatially resolved spectroscopy was applied for the analysis of plasma radiation. In order to find optimal conditions for spectrochemical applications of laser induced plasma, the influence of laser irradiation energy, compositions and pressure of the ambient gas, focusing, etc., on spectral emission and characteristics of plasma was examined. A method for the preparation of synthetic standards for the quantitative analysis of samples, for which there are no adequate certified reference materials, has been developed. Also, the applicability of the method of standard addition combined with normalization methods for improving the accuracy of determining the analyte concentration was tested. Results obtained with developed LIBS method were verified with the standard method, ICP-OES. The applied system based on TEA CO2 laser according to analytical performances is fully comparable and for some elements even better than commercial LIBS devices, which is verified by participation in the 2nd interlaboratory international LIBS comparison.
PB  - Универзитет у Београду, Хемијски факултет
T2  - Универзитет у Београду
T1  - Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака
UR  - https://hdl.handle.net/21.15107/rcub_nardus_17524
ER  - 

@phdthesis{
author = "Živković, Sanja M.",
year = "2019",
abstract = "Спектроскопија ласерски индуковане плазме (LIBS) је аналитичка техника која омогућава брзу, мултиелементалну анализу свих врста материјала, најчешће без потребе за претходном припремом узорака, у реалном времену и на лицу места. Ова савремена метода хемијске анализе у складу је са принципима зелене аналитичке хемије јер не захтева употребу агресивних и потенцијално токсичних хемикалија. Примарни циљ ове дисертације је испитивање аналитичких могућности оригиналног лабораторијског LIBS система за квалитативну и квантитативну анализу различитих чврстих узорака, као што су металне легуре, геолошки узорци и прашкасти биљни узорци. Развијени LIBS систем користи зрачење ТЕА CO2 ласера за индуковање плазме, а за анализу зрачења плазме временски-интеграљену просторно-разложену спектроскопију. У циљу проналажења оптималних услова за спектрохемијску примену ласером индуковане плазме, испитан је утицај енергије ласерског зрачења, састава и притиска околног гаса, начина фокусирања и других параметара на карактеристике и спектралну емисију плазме. Развијен је начин припреме синтетичких стандарда за квантитативну анализу узорака код којих не постоје адекватни сертификовани референтни материјали. Такође, испитана је могућност примене методе стандардног додатка комбиноване са методама нормализације за побољшање тачности одређивања концентрације аналита. Сви резултати добијени LIBS методом потврђени су применом стандардне ICP-OES технике. Учешћем у 2. интерлабораторијском међународном LIBS поређењу показано је да је систем на бази ТЕА CO2 ласера по аналитичким перформансама у потпуности упоредив а за поједине елементе чак и бољи у односу на комерцијалне LIBS уређаје., Laser-induced breakdown spectroscopy (LIBS) is an analytical technique for fast, multi-element analysis of any kind of material, most often without preliminary preparation, in real time and on-site. This modern analytical method is in accordance with the principles of green analytical chemistry because it does not require the use of aggressive and potentially toxic chemicals. The main aim of this thesis is to investigate the analytical capability of originally developed TEA CO2 based LIBS system, for qualitative and quantitative analysis of various types of solid samples (metal alloys, geological samples and powdered plant materials). In LIBS system, TEA CO2 laser irradiation was used for plasma generation while time-integrated spatially resolved spectroscopy was applied for the analysis of plasma radiation. In order to find optimal conditions for spectrochemical applications of laser induced plasma, the influence of laser irradiation energy, compositions and pressure of the ambient gas, focusing, etc., on spectral emission and characteristics of plasma was examined. A method for the preparation of synthetic standards for the quantitative analysis of samples, for which there are no adequate certified reference materials, has been developed. Also, the applicability of the method of standard addition combined with normalization methods for improving the accuracy of determining the analyte concentration was tested. Results obtained with developed LIBS method were verified with the standard method, ICP-OES. The applied system based on TEA CO2 laser according to analytical performances is fully comparable and for some elements even better than commercial LIBS devices, which is verified by participation in the 2nd interlaboratory international LIBS comparison.",
publisher = "Универзитет у Београду, Хемијски факултет",
journal = "Универзитет у Београду",
title = "Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака",
url = "https://hdl.handle.net/21.15107/rcub_nardus_17524"
}

Živković, S. M.. (2019). Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака. in Универзитет у Београду
Универзитет у Београду, Хемијски факултет..
https://hdl.handle.net/21.15107/rcub_nardus_17524

Živković SM. Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака. in Универзитет у Београду. 2019;.
https://hdl.handle.net/21.15107/rcub_nardus_17524 .

Živković, Sanja M., "Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака" in Универзитет у Београду (2019),
https://hdl.handle.net/21.15107/rcub_nardus_17524 .

TY  - JOUR
AU  - Živković, Sanja
AU  - Momčilović, Miloš
AU  - Staicu, Angela
AU  - Mutić, Jelena
AU  - Trtica, Milan
AU  - Savovic, Jelena
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2413
AB  - The aim of this study was to develop a simple laser induced breakdown spectroscopy (LIBS) method for quantitative elemental analysis of powdered biological materials based on laboratory prepared calibration samples. The analysis was done using ungated single pulse LIBS in ambient air at atmospheric pressure. Transversely-Excited Atmospheric pressure (TEA) CO2 laser was used as an energy source for plasma generation on samples. The material used for the analysis was a blue-green alga Spirulina, widely used in food and pharmaceutical industries and also in a few biotechnological applications. To demonstrate the analytical potential of this particular LIBS system the obtained spectra were compared to the spectra obtained using a commercial LIBS system based on pulsed Nd:YAG laser. A single sample of known concentration was used to estimate detection limits for Ba, Ca, Fe, Mg, Mn, Si and Sr and compare detection power of these two LIES systems. TEA CO2 laser based LIES was also applied for quantitative analysis of the elements in powder Spirulina samples. Analytical curves for Ba, Fe, Mg, Mn and Sr were constructed using laboratory produced matrix-matched calibration samples. Inductively coupled plasma optical emission spectroscopy (ICP-OES) was used as the reference technique for elemental quantification, and reasonably well agreement between ICP and LIBS data was obtained. Results confirm that, in respect to its sensitivity and precision, TEA CO2 laser based LIBS can be successfully applied for quantitative analysis of macro and micro-elements in algal samples. The fact that nearly all classes of materials can be prepared as powders implies that the proposed method could be easily extended to a quantitative analysis of different kinds of materials, organic, biological or inorganic. (C) 2017 Elsevier B.V. All rights reserved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Spectrochimica Acta. Part B: Atomic Spectroscopy
T1  - Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation
VL  - 128
SP  - 22
EP  - 29
DO  - 10.1016/j.sab.2016.12.009
ER  - 

@article{
author = "Živković, Sanja and Momčilović, Miloš and Staicu, Angela and Mutić, Jelena and Trtica, Milan and Savovic, Jelena",
year = "2017",
abstract = "The aim of this study was to develop a simple laser induced breakdown spectroscopy (LIBS) method for quantitative elemental analysis of powdered biological materials based on laboratory prepared calibration samples. The analysis was done using ungated single pulse LIBS in ambient air at atmospheric pressure. Transversely-Excited Atmospheric pressure (TEA) CO2 laser was used as an energy source for plasma generation on samples. The material used for the analysis was a blue-green alga Spirulina, widely used in food and pharmaceutical industries and also in a few biotechnological applications. To demonstrate the analytical potential of this particular LIBS system the obtained spectra were compared to the spectra obtained using a commercial LIBS system based on pulsed Nd:YAG laser. A single sample of known concentration was used to estimate detection limits for Ba, Ca, Fe, Mg, Mn, Si and Sr and compare detection power of these two LIES systems. TEA CO2 laser based LIES was also applied for quantitative analysis of the elements in powder Spirulina samples. Analytical curves for Ba, Fe, Mg, Mn and Sr were constructed using laboratory produced matrix-matched calibration samples. Inductively coupled plasma optical emission spectroscopy (ICP-OES) was used as the reference technique for elemental quantification, and reasonably well agreement between ICP and LIBS data was obtained. Results confirm that, in respect to its sensitivity and precision, TEA CO2 laser based LIBS can be successfully applied for quantitative analysis of macro and micro-elements in algal samples. The fact that nearly all classes of materials can be prepared as powders implies that the proposed method could be easily extended to a quantitative analysis of different kinds of materials, organic, biological or inorganic. (C) 2017 Elsevier B.V. All rights reserved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Spectrochimica Acta. Part B: Atomic Spectroscopy",
title = "Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation",
volume = "128",
pages = "22-29",
doi = "10.1016/j.sab.2016.12.009"
}

Živković, S., Momčilović, M., Staicu, A., Mutić, J., Trtica, M.,& Savovic, J.. (2017). Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation. in Spectrochimica Acta. Part B: Atomic Spectroscopy
Pergamon-Elsevier Science Ltd, Oxford., 128, 22-29.
https://doi.org/10.1016/j.sab.2016.12.009

Živković S, Momčilović M, Staicu A, Mutić J, Trtica M, Savovic J. Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation. in Spectrochimica Acta. Part B: Atomic Spectroscopy. 2017;128:22-29.
doi:10.1016/j.sab.2016.12.009 .

Živković, Sanja, Momčilović, Miloš, Staicu, Angela, Mutić, Jelena, Trtica, Milan, Savovic, Jelena, "Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation" in Spectrochimica Acta. Part B: Atomic Spectroscopy, 128 (2017):22-29,
https://doi.org/10.1016/j.sab.2016.12.009 . .

TY  - JOUR
AU  - Živković, Sanja
AU  - Savovic, J.
AU  - Trtica, M.
AU  - Mutić, Jelena
AU  - Momčilović, Miloš
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2412
AB  - The applicability of nanosecond infrared Transversely Excited Atmospheric (TEA) CO2 laser induced plasma for spectrochemical analysis of aluminum alloys was investigated. The plasma was generated by focusing a pulsed TEA CO2 laser that emits at 10.6 mu m on the Al target in ambient air at atmospheric pressure. The temporal profile of the laser pulse is composed of a 100 ns peak followed by a slowly decaying tail of about 2 mu s. The output pulse energy was approximately 160 mJ, thus the peak output power was estimated to be around 1.6 MW. Time-Integrated Space-Resolved Laser Induced Breakdown Spectroscopy (TISR-LIBS) was employed to obtain the emission spectra. The maximum intensity of emission, with sharp and well resolved spectral lines that were almost free of the background continuum, was obtained from plasma region 2 mm from the target surface. Linear calibration curves for Mg, Cr, Cu and Fe were obtained using aluminum alloy spectrochemical standards. The limits of detection for the investigated elements were in the 2-73 ppm range. Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) was used as a reference technique to estimate the accuracy of LIBS determination by use of control samples with known compositions. Comparison of the obtained results with those available in the literature confirms that LIBS system based on TEA CO2 laser, in combination with TISR spectral measurements, can be successfully applied to qualitative and quantitative determinations of minor elements in aluminum based alloys. (C) 2017 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser
VL  - 700
SP  - 175
EP  - 184
DO  - 10.1016/j.jallcom.2017.01.060
ER  - 

@article{
author = "Živković, Sanja and Savovic, J. and Trtica, M. and Mutić, Jelena and Momčilović, Miloš",
year = "2017",
abstract = "The applicability of nanosecond infrared Transversely Excited Atmospheric (TEA) CO2 laser induced plasma for spectrochemical analysis of aluminum alloys was investigated. The plasma was generated by focusing a pulsed TEA CO2 laser that emits at 10.6 mu m on the Al target in ambient air at atmospheric pressure. The temporal profile of the laser pulse is composed of a 100 ns peak followed by a slowly decaying tail of about 2 mu s. The output pulse energy was approximately 160 mJ, thus the peak output power was estimated to be around 1.6 MW. Time-Integrated Space-Resolved Laser Induced Breakdown Spectroscopy (TISR-LIBS) was employed to obtain the emission spectra. The maximum intensity of emission, with sharp and well resolved spectral lines that were almost free of the background continuum, was obtained from plasma region 2 mm from the target surface. Linear calibration curves for Mg, Cr, Cu and Fe were obtained using aluminum alloy spectrochemical standards. The limits of detection for the investigated elements were in the 2-73 ppm range. Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) was used as a reference technique to estimate the accuracy of LIBS determination by use of control samples with known compositions. Comparison of the obtained results with those available in the literature confirms that LIBS system based on TEA CO2 laser, in combination with TISR spectral measurements, can be successfully applied to qualitative and quantitative determinations of minor elements in aluminum based alloys. (C) 2017 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser",
volume = "700",
pages = "175-184",
doi = "10.1016/j.jallcom.2017.01.060"
}

Živković, S., Savovic, J., Trtica, M., Mutić, J.,& Momčilović, M.. (2017). Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 700, 175-184.
https://doi.org/10.1016/j.jallcom.2017.01.060

Živković S, Savovic J, Trtica M, Mutić J, Momčilović M. Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser. in Journal of Alloys and Compounds. 2017;700:175-184.
doi:10.1016/j.jallcom.2017.01.060 .

Živković, Sanja, Savovic, J., Trtica, M., Mutić, Jelena, Momčilović, Miloš, "Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser" in Journal of Alloys and Compounds, 700 (2017):175-184,
https://doi.org/10.1016/j.jallcom.2017.01.060 . .