高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (10): 1544.

• 研究简报 • 上一篇    下一篇

催化激光热透镜光谱法测定南阳恐龙蛋化石中痕量铱

阎宏涛, 杨胜科   

  1. 西北大学化学系, 西安, 710069
  • 收稿日期:1995-10-30 出版日期:1996-10-24 发布日期:1996-10-24
  • 通讯作者: 阎宏涛,男,44岁,博士,教授,博士生导师.
  • 作者简介:阎宏涛,男,44岁,博士,教授,博士生导师.
  • 基金资助:

    国家教育委员会优秀年轻教师基金

Studies on the Determination of Trace Iridium in Fossil of Dinosaurian Eggs with Catalytic LTLS

YAN Hong-Tao, YANG Sheng-Ke   

  1. Department of Chemistry, Northwest University, Xi'an, 710069
  • Received:1995-10-30 Online:1996-10-24 Published:1996-10-24

关键词: 恐龙蛋化石, 热透镜光谱法, 催化反应, 痕量铱的测定

Abstract: A new method for the determination of trace iridium in fossil of dinosaurian eggs with catalytic laser thermal lensing spectrometry is presented in this paper.The method is based on the kinetic reaction in which trace iridium catalyzes the decomposition of hydrogen peroxide in basic condition and on the determination of the magneson Ⅱfading speed.The detection limit is 5.2×10-12 g/mLfor iridium.The linear range of the calibration curve is 0.2~35 ng/mLof iridium and correlation coeffcient is 0.9974.The method has been applied to the determination of the trace iridium in fossil of dinosaurian eggs in Nanyang region,China.

Key words: Fossil of dinosaurian eggs, Thermal lensing spectrometry, Catalytic reaction, Detemination of trace iridium

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