https://scholars.lib.ntu.edu.tw/handle/123456789/37485
標題: | 感應耦合電漿質譜術之建立與應用 (III): 青藏高原構造演化 | 作者: | 鍾孫霖 | 關鍵字: | 感應耦合電漿質譜術;微量元素分析;鋯石U-Pb 定年;青藏高原;ICP-MS;Trace element determinations;zircon U-Pb dating;Tibet | 公開日期: | 2004 | 出版社: | 臺北市:國立臺灣大學地質科學系暨研究所 | 摘要: | 本研究計畫設計為一個三年期專題計畫,但將分年申請研究經費且應用研究不同的內容。前 兩年已利用新購之 Agilent (原HP)7500s ICP-MS 設備,建立一種利用強酸密封溶解岩石樣 品、以美國地調所標準岩樣作參考標準、另加若干質量監控溶液作為內標,分析岩石中大約 四十種微量元素的方法。此一分析方法具有簡單、準確、同時測量多元素等優點,能夠快速 有效地分析大多數常見的岩石樣品。第三年以來主要開發本儀器與雷射系統之連結,應用於 微小標本之原位(in-situ)微量元素含量分析和鋯石U-Pb 定年,並配合申購MC-ICPMS ,應用於青藏高原構造演化等研究。 This project is proposed as a three-year project to develop the quadrupole ICP-MS, i.e., a new Agilent (originally HP) 7500s, has been installed in this department for potential applications in geosciences and environmental sciences. In the first year, the analytical procedures which would enable the ICP-MS to precisely and simultaneously determine about 40 trace elements in rock samples has been established. The procedures includes: (1) digestion of rock samples using distilled HF+HNO3 in screw-top teflon beakers in the clean room, (2) digestion of USGS and other rock standards through the same processes and then using them as calibration references, and (3) using certain internal standards during the measurements to monitor the sensitivity shift of the machine. Consequently, the ICP-MS method developed marks with: (1) simple sample preparation, (2) straightforward data reduction, and (3) high analytical precision, and thus can be applicable to trace element determinations of common rock samples. In the 3 rd year of this project, the quadrupole ICP-MS has been successfully linked with a NW 213 laser ablation system, which can be used for in-situ trace element analyses as well as zircon U-Pb dating. These methods are currently applied to study certain outstanding geologic problems in Southeast Asia such as the tectonomagmatic evolution of the Himalayas and Tibetan platea. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/11818 | 其他識別: | 912116M002024 | Rights: | 國立臺灣大學地質科學系暨研究所 |
顯示於: | 地質科學系 |
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912116M002024.pdf | 49.27 kB | Adobe PDF | 檢視/開啟 |
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