Abstract: A combination of Resonance lonization Spectroscopy and Time-of-Flight Mass Spectroscopy (RIS-TOFMS) is the newest and most sensitive method in modern ultra-trace detection. This paper first presents a short account ef the basic principles of RIS-TOFMS and its current applications. Then the application of RIS-TOFMS to geological prospecting of underground concealed ores of precious metals is discussed in detail, followed by a description of the progress of our laboratory work.
From the achievement and development of our work in recent years, we believe its prospect of practical development is bright. It will
(1) Develop new instrument and equipment f or prospecting and surveying underground concealed ores of rare and noble metals and rare-earth metals;
(2) Develop effective ship-born instrument and equipment for prospecting undersea mineral deposits;
(3) Develop into a high-tech research method in materials science (including super-conduction), thin film science, environmental science, biology, medicine, etc.