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Cheung Ching Ying. / Bibliography: leaf 126 / Thesis (M.Phil.)--Chinese University of Hong Kong

Lam Lik. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references (leaves 107-112). / Chapter Chapter 1. --- Introduction --- p.1 / Chapter 1.1. --- Chemistry of portland cement manufacture --- p.1 / Chapter 1.2. --- Classical methods of cement analysis --- p.7 / Chapter 1.3. --- Application of instrumental methods in cement analysis --- p.12 / Chapter 1.3.1. --- X - ray fluorescence spectrometry --- p.12 / Chapter 1.3.2. --- Atomic absorption spectrometry --- p.16 / Chapter 1.3.3. --- Other instrumental methods --- p.22 / Chapter 1.4. --- Treatment of data --- p.25 / Chapter 1.5. --- Dissolution techniques for AAS analysis --- p.28 / Chapter 1.5.1 --- Hydrofluoric acid decomposition --- p.28 / Chapter 1.5.2 --- Fusion --- p.30 / Chapter 1.6. --- Research objective --- p.34 / Chapter Chapter 2. --- Analysis of Cement and Raw Meal Samples --- p.35 / Chapter 2.1. --- Experimental --- p.36 / Chapter 2.1.1. --- Reagents --- p.35 / Chapter 2.1.2. --- Instrumental --- p.37 / Chapter 2.1.3. --- Procedure --- p.37 / Chapter 2.1.3.1. --- "Sample solutions for the determination of SiO2, A1203, Fe2O3, Ti02, Na20 and K20" --- p.37 / Chapter 2.1.3.2. --- Sample solutions for the determination of CaO and MgO --- p.38 / Chapter 2.1.3.3. --- "Standard solutions for the determination of SiO2, Al2O3， Fe203, TiO2, Na2O and K2O" --- p.33 / Chapter 2.1.3.4. --- Sample solutions for the determination of CaO and MgO --- p.41 / Chapter 2.1.3.5. --- X-ray briquettes --- p.42 / Chapter 2.2. --- Results and discussion --- p.43 / Chapter 2.2.1. --- The proposed fusion system --- p.43 / Chapter 2.2.2. --- Instrumental conditions --- p.47 / Chapter 2.2.3. --- Accuracy --- p.56 / Chapter 2.2.4. --- Interferences studies --- p.61 / Chapter 2.2.5. --- "Calibration graph, detection limits and precision" --- p.69 / Chapter 2.2.6 --- Real sample analysis --- p.80 / Chapter Chapter 3. --- Analysis of Siliceous Materials and Coal --- p.84 / Chapter 3.1. --- Experimental --- p.84 / Chapter 3.1.1. --- Reagents and instruments used --- p.84 / Chapter 3.1.2. --- Procedure --- p.85 / Chapter 3.1.2.1. --- "Sample solutions for the determination of SiO2, A1203, Fe2O3, Ti02, Na20 and K20" --- p.85 / Chapter 3.1.2.2. --- Sample solutions for the determination of CaO and MgO --- p.85 / Chapter 3.1.2.3. --- "Standard solutions for the determination of Si02, Al2O3, Fe2O3,TiO2, Na20 and K20 in siliceous material and coal" --- p.86 / Chapter 3.1.2.4. --- Standard solutions for the determination of CaO and MgO --- p.87 / Chapter 3.1.2.5. --- X - ray briquettes --- p.88 / Chapter 3.2. --- Results and discussion --- p.88 / Chapter 3.2.1. --- Fusion of siliceous materials --- p.88 / Chapter 3.2.2. --- Fusion of coal --- p.93 / Chapter 3.2.3. --- Accuracy and precision --- p.95 / Chapter 3.2.4. --- Real sample analysis --- p.99 / Chapter Chapter 4. --- Conclusion --- p.103 / Chapter 4.1. --- Comparison of XRF and AAS as analytical means in the cement industry --- p.103 / Chapter 4.2. --- The proposed fusion system --- p.105 / References --- p.107

Doppler-free saturation spectroscopy in an optically thick atomic vapor is used in an optical-feedback configuration for two semiconductor diode laser systems. One laser system consists of an unmodifed, commercially available diode laser. The other laser system consists of a diode laser initially stabilized by optical feedback from a diffraction grating. In both cases a portion of a 780-nm diode laser beam passes through a heated rubidium cell and is retroreflected back to the laser. The optical feedback causes the laser frequency to be stabilized to a hyperfine transition within the Rb D��� line. The linewidth of the laser is also reduced as a result of the optical feedback. / Graduation date: 1995

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

Thesis (Master)--İzmir Institute of Technology, İzmir, 2005 / Includes bibliographical references (leaves 35-37).

Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2016. / 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. The project focused on comparing the quality of chemical analysis results of boron produced by analysis techniques/ methods used at Koeberg Nuclear Power Station namely; Potentiometric Titration, Atomic Absorption Spectrophotometry (Flame) and UV-VIS Azomethine-H method. The methods were described, optimised, evaluated and compared in terms of uncertainty of measurement, accuracy, precision, analysis range, limitations, appropriateness and applicability for boron analysis in 2500 mg B/kg concentration range. For Potentiometric Titration method, the measurement uncertainty = 2500 ±16 mg B/kg, accuracy= 0.2%, precision= 0.08% the range of analysis= 5-800 mg B/kg. For Atomic Absorption Spectrophotometry (Flame) the measurement uncertainty= 2500 ±51 mg B/kg, accuracy= 0.12%, precision= 0.44% the range of analysis= 0 -500 mg B/kg. For UV-VIS Azomethine-H the measurement uncertainty= 2500 ±72 mg B/kg, accuracy= 0.08%, precision= 0.44% the range of analysis= 0 -10 mg B/kg. The INPOs 95% accuracy and precision criteria for boron is ± 1%. So these techniques could be used for boron analysis in PWR. Based on the evaluation and assessments mentioned above; the Potentiometric Titration was found to be the most preferred method for boron analysis for Pressurised Water Reactors followed by Atomic Absorption Spectrophotometry (Flame) that can be of good use in determining boron especially in waste samples and samples with complex matrices. The UV-VIS Azomethine-H methods can only be used when it is really necessary to determine very low levels of boron between 0- 10mg B/kg of which it was never required before. Since it is specifically the B-10 isotope that is responsible for the ability to control reactivity, the implementation of isotopic boron analysis (by Inductively Coupled Plasma – Mass Spectrometry) at KNPS is explained and the advantage of the programme is illustrated. Although the current state of instrumental capabilities is adequate for 10B isotope determination, further work of optimising the methodology for even better results is recommended.

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