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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Investigation of graphite furnace capacitively coupled plasma atomic spectrometry for the determination of metals and silica in water andair particulate matter

張兆發, Cheung, Siu-fat, Eric. January 1999 (has links)
published_or_final_version / Chemistry / Master / Master of Philosophy
42

Characterization of Pb and selected trace elements in amazonitic K-feldspar

Sokolov, Maria, 1969- January 2006 (has links)
Amazonitic K-feldspar is characteristic of evolved granitic pegmatites of NYF (niobium-yttrium-fluorine) type, associated with A-type granite emplacement. In this work, I focus on four notable examples of such an association: (1) West Keivy, Kola Peninsula, Russia, (2) Saint-Ludger-de-Milot, Quebec, (3) Lac Sairs, Quebec, and (4) Morefield, Virginia. A fifth locality, the Broken Hill metamorphosed exhalative-type volcanogenic deposits in Australia, is an unusual type of amazonitic K-feldspar formed in an ore environment. A total of nineteen samples of amazonitic K-feldspar were characterized geochemically and mineralogically on the basis of X-ray diffraction, electron-microprobe and laser-ablation ICP-MS analyses. Lead, as an essential requirement for formation of the blue-green amazonitic color, has received particular attention. In every case, the analytical data show elevated amounts of Pb and rare alkalis, which strongly partition into the K-rich phase of the perthite intergrowth. Unusual micrometric grains, highly enriched in Pb, are found in cracks in the material from West Keivy. Some of the grains represent a new mineral species, a Pb-dominant feldspar. The presence of amazonitic K-feldspar in a granitic pegmatite is more than a curiosity. It can shed light on important petrogenetic issues such as metasomatic rejuvenation of crustal rocks prior to regional melting in a period of extension.
43

Development of inductively coupled plasma spectroscopic methods for the determination of metals in beluga (delphinapterus leucas) and pygmy sperm (kogia breviceps) whale liver samples/

Parlayan, Filiz. Eanes, Ritchie January 2005 (has links) (PDF)
Thesis (Master)--İzmir Institute of Technology, İzmir, 2005 / Keywords: ICP-OES, Chemometrics methods, internal standardization, matrix effects. Includes bibliographical references (leaves. 111-120).
44

Investigation of graphite furnace capacitively coupled plasma atomic spectrometry for the determination of metals and silica in water and air particulate matter /

Cheung, Siu-fat, Eric. January 1999 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2000. / Includes bibliographical references (leaf 153).
45

Ion-exchange sample probe for laser ablation-ICP-AES /

Yip, Hung-chiu. January 1998 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1998. / Includes bibliographical references (leaf 154).
46

Investigation of solution nebulization and laser ablation sample introduction techniques for inductively coupled plasma-atomic emission spectroscopy (ICP-AES) /

Leung, Pui-king. January 1996 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1996. / Includes bibliographical references (leaf 147).
47

Graphite furnace capacitively coupled plasma atomic emission spectrometry in the determination of trace metals in biological and environmental samples /

Tsang, Ling-kin, Simon. January 1998 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1998. / Includes bibliographical references.
48

Investigation of probe insertion effects on plasma excitation conditions in direct sample insertion-inductively coupled plasma atomic emission spectrometry /

Cheung, Wai-kwong, Andy, January 2005 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2005.
49

Aspects of the determination of the platinum group elements and arsenic by inductively coupled plasma mass spectrometry

Schmidt, Lilian Olga. January 2001 (has links)
Thesis (Ph.D. (Chemistry))--University of Pretoria, 2001. / Summaries in Afrikaans and English.
50

Development and application of chip-based and capillary-based capillary electrophoresis : inductively coupled plasma atomic emission spectroscopy and mass spectrometry /

Hui, Ying-ngai. January 2005 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2005.

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