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Dissertations / Theses on the topic 'Furnace atomic absorption spectroscopy'

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Published: 4 June 2021

Last updated: 30 January 2023

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1

De, Jager Lionel Louis. "Permanent modifiers for electrothermal atomization atomic absorption spectometry." Diss., Access to E-Thesis, 2000. http://upetd.up.ac.za/thesis/available/etd-11162006-161158/.

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2

Williams, Robert Hamilton. "Trace metals analysis using continuum source simultaneous multielement graphite furnace atomic absorption spectroscopy." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/284168.

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A novel instrument for simultaneous multielement graphite furnace atomic absorption is described. This instrument employs a continuum light source and an echelle-charge injection device array detector system to achieve both simultaneous analysis of multiple wavelengths and true simultaneous background correction. The charge injection device detector also allows continuous wavelength coverage from 400-190 nm. Multichannel GFAAS analysis improves not only analytical speed but enables the use of elements resistant to matrix effects to assist in the identification of matrix effects in other elemen

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3

Zayas-Cruz, Jorge I. "Studies on the atomization mechanism of selenium in graphite furnace atomic absorption spectrometry /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu148758688918748.

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4

Bir, David J. "The development of a radio frequency plasma within a graphite furnace." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834507.

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Graphite Furnace Atomic Absorption Spectroscopy (GFAA) and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) are two primary means of analyzing metals at the elemental level. Both techniques are widely accepted as tools for basic research. Each technique is performed differently and has its own distinct advantages as well as disadvantages. The choice of which technique to employ is determined by the needs of the analysis and the limitations of the instrumental technique.The idea to merge the two techniques was originallydeveloped by the research group of Dr. Michael W. Blades o

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5

Sombers, Leslie A. "Determination of Trace Levels of Lead in Whole Blood by Graphite Furnace Atomic Absorption Spectroscopy." W&M ScholarWorks, 1998. https://scholarworks.wm.edu/etd/1539626166.

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6

Marchand, Bruno Carleton University Dissertation Chemistry. "Studies on matrix interferences and mechanisms of atomization of chromium in graphite furnace atomic absorption spectroscopy." Ottawa, 1987.

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7

曾令建 and Ling-kin Simon Tsang. "Graphite furnace capacitively coupled plasma atomic emission spectrometry in the determination of trace metals in biological andenvironmental samples." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31220009.

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8

Chen, Xi 1970. "Quasi-stable slurries for the determination of trace elements by graphite furnace atomic absorption spectrometry." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33386.

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High-pressure homogenization using a new flat valve homogenizer in combination with enzymatic digestion with a crude protease was investigated as a means of releasing Se compounds from zoological and botanical matrices prior to slurry introduction GF-AAS. Timed trials with four zoological certified reference materials (CRMs), three botanical reference materials (RMs), and a food crop indicated that Se release was quantitative after homogenization or became quantitative within 1 h of digestion at 60°C.<br>The same technique was employed on five animal feed samples.<br>A new model of homogenizer

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9

Tsang, Ling-kin Simon. "Graphite furnace capacitively coupled plasma atomic emission spectrometry in the determination of trace metals in biological and environmental samples /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19737403.

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10

Stollar, Sarah. "A chemical investigation of the 18 day creation of lead oil /." Norton, MA : Wheaton College, 2008. http://hdl.handle.net/10090/5528.

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11

余東民 and Tung-man Yu. "Graphite furnace: capacitively coupled plasma- atomic spectrometry and inductively coupled plasma - massspectrometry for the determination of silica and trace metals in water." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B29911643.

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12

Ehsan, Sadia. "High pressure homogenization of wood pulp samples prior to slurry introduction for the determination of Cu, Mn and Fe by graphite furnace atomic absorption spectrometry." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31225.

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The scope of these studies was two-fold: to evaluate high pressure homogenized slurries as a rapid means of screening wood pulps for their Cu, Mn and Fe content and to evaluate the high pressure homogenization in combination with chelating agents or enzymatic digestion for the liberation/extraction of metal ions from this matrix.<br>Cu, Mn and Fe were determined successfully in pulp samples using high-pressure homogenization prior to slurry introduction-GF-AAS. The analysis time of the method from sample acquisition to determination was of the order of a few minutes per sample.<br>Different ce

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13

Duffield, Roger John. "Direct atomisation furnace atomic absorption." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236310.

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14

Wu, Shaole Carleton University Dissertation Chemistry. "A theoretical and experimental study of platform furnace and probe furnace in graphite furnace atomic absorption spectrometry." Ottawa, 1986.

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15

Simpson, Emma. "Attosecond transient absorption spectroscopy in atomic species." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/44970.

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When high intensity laser light is focused into a gaseous target, high energy photons can be produced through the strongly nonlinear effect of high order harmonic generation. For a 30 fs, 800 nm or 1400 nm wavelength laser pulse, the result is a train of attosecond pulses produced at odd harmonic frequencies of the driving laser field, spanning energy ranges into the 100s eV. These attosecond pulses can access timescales characteristic to the movement of electrons in atoms, and by exploiting their properties as an ultrafast probe, electron dynamics in evolving atomic systems can be observed. T

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16

Conkey, Donald B. "On-Chip Atomic Spectroscopy." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1746.pdf.

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17

Cathum, Shamil J. (Shamil Jawad) Carleton University Dissertation Chemistry. "Studies on atomization of elements in graphite furnace atomic absorption spectrometry." Ottawa, 1991.

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18

BORGES, RENATO MARÇULLO. "DETERMINATION OF SN IN HUMAN MILK BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=14735@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>O estanho é um metal de ocorrência natural que é extraído do minério de cassiterita na forma de SnO2. É lançado na natureza através de fontes naturais e antrópicas e ocorre na natureza tanto na forma inorgânica, quanto orgânica. Quanto menor a cadeia orgânica associada ao metal, maior a toxicidade do composto. Compostos orgânicos podem penetrar na membrana celular e interromper a fosforilação oxidativa e danificar as mitocôndrias. Podem ser ainda genotóxicos e imunotóxicos. O leite humano é a principal fonte de alimentação e nutrição para r

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19

O'Grady, C. E. "Fundamental research into aerosols for analytical atomic absorption spectroscopy." Thesis, University of Aberdeen, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377568.

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The material presented in this thesis falls into three main sections: 1) The measurement of nebulizer suction and its applications. Three methods of measurement of nebulizer suction were evaluated. The potential and limitations of each method was assessed. The most reliable and generally applicable method was measurement with a mercury manometer via a T-piece during aspiration, but after correction for suction drops along all the nebulizer capillaries and across connections. The measurement of suction was then applied to practical problems in AAS, i.e. the lack of dependence of signal on sampl

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20

Hutton, Jonathan Craig Carleton University Dissertation Chemistry. "Some theoretical and experimental studies in atomic absorption spectrometry." Ottawa, 1992.

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21

French, Holly. "Trace metal analysis of street drugs by atomic absorption spectroscopy." Thesis, University of Kent, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.591083.

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The aim of the study was to ascertain the capabilities of the graphite furnace atomic absorption spectroscopy (OF AAS) system to discriminate between the two separate ecstasy batches according to the differing concentrations of trace metals. Previous studies have utilised rcp techniques such as rCP-AES and rCP-MS to determine trace metal concentrations in ecstasy tablets with particular interest in potential synthesis marker metals such as Pt, B and Hg. Five metals: Cu, Ba, Ni, Cr and Ph were quantified with good repeatability and reproducibility. The selection of elements comprises of metals

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22

Dowds, Eileen. "Automated Data Acquisition for Analysis of Fly Ash by Graphite Furnace Atomic Absorption Spectrophotometry." W&M ScholarWorks, 1989. https://scholarworks.wm.edu/etd/1539625520.

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23

Thompson, Alexander W. J. "Multimode absorption spectroscopy of CO and CO₂ gas mixtures." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:ebcb2031-1165-414e-88d8-69465bdaf291.

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The development of multimode absorption spectroscopy (MUMAS) for multi-species detec- tion and its potential for process control or environmental monitoring is reported. The simultaneous detection of CO and CO2 is demonstrated in a proof-of-principle experiment for applications in industrially relevant gas species monitoring. The technique of MUMAS is extended to the near infrared in order to detect these and other industrially relevant species. A laser was designed and constructed to emit a multimode spectrum in the region of 1.57um to take advantage of the spectral overlap of the second vibr

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24

Lei, Tian. "Selenium speciation by high performance liquid chromatography -atomic absorption spectrometry." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55507.

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Selenium has been shown to have multiple biochemical effects ranging from nutrient deficiency at low levels to toxicity at high levels. This duality of concern has led to a demand for increased numbers of highly accurate and precise determinations of selenium in biological materials. A convenient procedure was developed for determining selenoamino acids by HPLC-THG-AAS, based on the derivatization of these analytes with Sanger's reagent. Selenomethionine, selenocystine and selenocysteine (after blocking the free selenol group with phenylmercurio cation) were converted to their N-2,4-dinitrophe

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25

Gilchrist, Glen Fraser Richard Carleton University Dissertation Chemistry. "Studies on atom formation and loss processes of some elements in graphite furnace atomic absorption spectrometry." Ottawa, 1990.

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26

Chan, Mau Hing. "Photothermal deflection spectroscopy of novel electronic materials." HKBU Institutional Repository, 1996. http://repository.hkbu.edu.hk/etd_ra/66.

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27

Liang, Dong Cuan. "Development and characterization of atmospheric pressure radio frequency capacitively coupled plasmas for analytical spectroscopy." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30590.

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An atmospheric pressure radio frequency capacitively coupled plasma (CCP) has been developed and characterized for applications in atomic emission spectrometry (AES), atomic absorption spectrometry (AAS) and gas chromatography (GC). The CCP torch was initially designed as an atom reservoir for carrying out elemental analysis using atomic absorption. Functionally, the device consists of two parts, the CCP discharge tube and the tantalum strip electrothermal vaporization sample introduction system. The torch design provides for very effective energy transfer from the power supply to the plasma

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28

Erdem, Arzu Eroğlu Ahmet E. "Use Of Different Gold Amalgamation Techniques In Mercury Determination By Cold Vapor Atomic Absorption Spectrometry/." [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/master/kimya/T000354.pdf.

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Thesis (Master)--İzmir Institute of Technology, İzmir, 2005.<br>Keywords: Mercury, atomic absorption spectrometry, gold, amalgamation, cold vapor. Includes bibliographical references (leaves 48-51).

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29

Yersel, Müşerref Eroğlu Ahmet E. thesis advisor. "Separation of trace antimony and arsenic prior to hydride generation atomic absortion spectrometric determination/." [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/master/kimya/T000392.pdf.

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30

Fries, Michael N. "The Validation of LeadCare © II Portable Blood Lead Analyzer through Graphite Furnace Absorption Spectroscopy (GFAAS)." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439305875.

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31

Haraldsen, Lana Celeste. "Direct determination of cadmium and beryllium in coal and fly ash slurries using graphite furnace atomic absorption spectrometry." Master's thesis, University of Cape Town, 1990. http://hdl.handle.net/11427/17285.

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Bibliography: pages 119-126.<br>Graphite Furnace Atomic Absorption Spectrometry (GFAAS) was used for the determination of cadmium and beryllium in coal and fly ash slurries. Sample preparation involved grinding the sample to a fine powder and slurrying it in a suitable solvent. Stable slurries were maintained by magnetic stirring during sampling. Pyrolytically coated graphite tubes were used for cadmium determinations, while beryllium was determined with platform atomisation. Ammonium dihydrogen orthophosphate and magnesium nitrate matrix modifiers were used for cadmium and beryllium determina

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32

Al-Maawali, Sabah (Sabah Mohamed Amer) Carleton University Dissertation Chemistry. "Studies on electrothermal atomization in graphite furnace atomic absorption spectrometry and electrothermal vaporization inductively coupled plasma mass spectrometry." Ottawa, 1991.

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33

Tasana, Nomalanga Gloria. "Optimisation and evaluation of boron analysis for pressurized Water reactor plants." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2328.

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Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2016.<br>Boron concentration analysis is an important and critical analysis performed by the Analytical Chemistry Laboratory at Koeberg Nuclear Power Station (KNPS), because boron controls reactivity and the concentration determination is a Technical Specification Parameter (safety parameter). Hence accurate, precise results for boron concentration produced by laboratories and on-line analysers are important because of their operational implications associated with reactivity control and also for nuclear safety. T

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34

Haider, Nazre. "The collisional behaviour of atomic carbon and germanium investigated by time-resolved resonance absorption spectroscopy." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308254.

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35

Marshall, P. "Kinetic studies of sodium atoms at elevated temperatures by time-resolved atomic resonance absorption spectroscopy." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355262.

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36

Northern, Jonathen Henry. "Multi-species detection using Infrared Multi-mode Absorption Spectroscopy." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:10f3bd62-4c81-4eaf-854d-1f388af73be9.

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This thesis reports work extending the scope of a recently developed gas sensing technique, multi-mode absorption spectroscopy (MUMAS). The ability of MUMAS to simultaneously detect multiple species from a mixture is demonstrated for the first time. The technique is subsequently extended to mid-infrared wavelengths, realising large gains in sensitivity. A solid-state, multi-mode laser has been developed to provide a high-performance comb source for use with MUMAS. This in-house constructed, diode-pumped, Er/Yb:glass laser operates on 10 longitudinal modes, separated by 18 GHz and centred close

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37

Fellows, Craig Stephen. "Aluminium analysis in clinical samples by graphite furnace atomic absorption spectrometry and some fundamental studies of plasma source mass spectrometry." Thesis, University of Southampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296427.

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38

Wu, Shun. "Direct fiber laser frequency comb stabilization via single tooth saturated absorption spectroscopy in hollow-core fiber." Diss., Kansas State University, 2014. http://hdl.handle.net/2097/18373.

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Doctor of Philosophy<br>Department of Physics<br>Kristan L. Corwin<br>Portable frequency references are crucial for many practical on-site applications, for example, the Global Position System (GPS) navigation, optical communications, and remote sensing. Fiber laser optical frequency combs are a strong candidate for portable reference systems. However, the conventional way of locking the comb repetition rate, frep, to an RF reference leads to large multiplied RF instabilities in the optical frequency domain. By stabilizing a comb directly to an optical reference, the comb stability can potenti

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39

Sealy, I. P. "A kinetic study of lead atoms at elevated temperatures by time-resolved atomic resonance absorption spectroscopy." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383938.

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40

Basu, Subhash Chandra. "Reactions of Si and Ge atoms with unsaturated organic molecules by time-resolved atomic resonance absorption spectroscopy." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293497.

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41

André, Johansson. "A photodegradation study of conjugated polymers for organic solar cells by absorption spectroscopy and atomic force microscopy." Thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84049.

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The effect of light exposure in ambient air on thin films made from an electron acceptor polymer poly{[N,N'-bis(2-octyldodecyl)naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5'-(2,2'-bithiophene)} (N2200), an electron donor polymer Poly[[2,3-bis(3-octyloxyphenyl)-5,8-quinoxalinediyl]-2,5-thiophenediyl] (TQ1) and their blends, has been studied using UV-vis spectroscopy and Atomic Force Microscopy (AFM). For solutions of TQ1, N2200 and blends, the linearity of the Beer-Lambert law for absorption spectroscopy has been verified. The measured UV-vis spectra show that TQ1 thin films are more

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42

Liao, Chen-Ting, and Arvinder Sandhu. "XUV Transient Absorption Spectroscopy: Probing Laser-Perturbed Dipole Polarization in Single Atom, Macroscopic, and Molecular Regimes." MDPI AG, 2017. http://hdl.handle.net/10150/624358.

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We employ an extreme ultraviolet (XUV) pulse to impulsively excite dipole polarization in atoms or molecules, which corresponds to coherently prepared superposition of excited states. A delayed near infrared (NIR) pulse then perturbs the fast evolving polarization, and the resultant absorbance change is monitored in dilute helium, dense helium, and sulfur hexafluoride (SF6) molecules. We observe and quantify the time-dependence of various transient phenomena in helium atoms, including laser-induced phase (LIP), time-varying (AC) Stark shift, quantum path interference, and laser-induced continu

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43

Franklin, Dean E. "A novel approach to determine arsenic contamination in the environment /." Online version of thesis, 2007. http://hdl.handle.net/1850/5341.

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44

PACHECO, LUCIANA FERNANDES. "CO-SITE DIGITAL MICROSCOPY AND ATOMIC ABSORPTION SPECTROSCOPY IN THE ANALYSIS OF THE CHELATING EFFECT ON HUMAN DENTINE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=12984@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>A partir dos anos 70 constatou-se a formação de uma massa aderida às paredes do canal radicular, após a instrumentação, que foi denominada smear layer. Esta camada é composta de material orgânico e inorgânico, tecido pulpar e bactérias, e contribui para obliterar os túbulos dentinários. A remoção desta camada melhora a adaptação entre o material obturador e as paredes dentinárias, elimina bactérias, limpa e alarga os túbulos. Essa remoção é realizada por soluções quelantes, mas a substância e o tempo ideais permanecem desconhecidos. Os quel

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45

Deeyamulla, Mahendra Priyantha. "Kinetic studies of ground state carbon atoms by time-resolved atomic resonance absorption spectroscopy in the vacuum ultraviolet." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614983.

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46

Barrett, N. T. "Glancing angle X-ray absorption spectroscopy to investigate changes in the local atomic structure around uranium in leached glasses." Thesis, University of Strathclyde, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382385.

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47

Knabe, Kevin. "Using saturated absorption spectroscopy on acetylene-filled hollow-core fibers for absolute frequency measurements." Diss., Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4126.

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48

Kuznetsova, Yelena Anatolyevna. "Atomic and nuclear interference phenomena and their applications." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2428.

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In this work, interference and coherence phenomena, appearing in atomic and molecular ensembles interacting with coherent light sources, as electromagnetically induced transparency (EIT), coherent population trapping (CPT), and slow group velocity of light are investigated. The goal of the project is to make the steps towards various applications of these phenomena, first, by studying them in solid media (which are the most advantageous for applications), second, by suggesting some novel applications such as CPT-based plasma diagnostics, and realization of new types of solid-state lasers (base

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49

Banda, Maria Fenzile. "Suppression of matrix interferences in electrothermal atomic absorption spectrometry using a fast-heated ballast atomiser." Thesis, 2008. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000349.

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Thesis (MTech. degree in Chemistry)--Tshwane University of Technology, 2008.<br>This work is aimed at experimental verification of the theory about the advantages of the two-step sample vapour release in a fast-heated ballast furnace. The term “ballast” was introduced earlier in electrothermal atomic absorption spectrometry, as an alternative to a platform to describe a compact body of refractive material loosely located on the bottom of a tube furnace atomiser. The thermal behaviour of the ballast furnace is similar to that of the platform, but without restriction created by the platform area

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50

"Direct determination of lead in airborne particulate matter by graphite furnace atomic absorption spectrometry." 1997. http://library.cuhk.edu.hk/record=b5895739.

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by Lai Yuen Kwan.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1997.<br>Includes bibliographical references (leaves 41-45).<br>Abstract --- p.i<br>Acknowledgement --- p.ii<br>Contents --- p.iii<br>List of Figures --- p.vi<br>List of Tables --- p.vii<br>Chapter 1. --- INTRODUCTION<br>Chapter 1.1 --- Air Pollution in Hong Kong --- p.1<br>Chapter 1.2 --- Lead in Air and its Harmful Effects on Human --- p.3<br>Chapter 1.3 --- Sampling of Air Particulates --- p.6<br>Chapter 1.3.1 --- Principles of filter sampling --- p.6<br>Chapter 1.3.2 --- Filter media for air sampling --- p.7<

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