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| AN OUTLINE OF SELENIUM RESOURCES AND ITS EXPLOITATION AND UTILIZATION |
| FENG Cai-xia1,2, LIU Jia-jun1, LIU Shen1,2, LI Zhi-ming1,2, LI En-dong1,2 |
1. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;
2. The Graduate School, Chinese Academy of Sciences, Beijing 100039, China |
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Abstract Selenium is a rare and scattered element.There is few content in any kinds of geochemical samples.The element is difficult to form independent minerals of itself,but scattered in other minerals and media.In early years,people know only the plisonous nature of selenium and its chemical compounds.Until 1950s,selenium was recognized to be an essential element for animal and man.It has drawn attention of researchers from different fields in medical science,earth science,agriculture and biology.At present,selenium is widely used in glass making,metallurgy,electronics industry,national defense,chemical industry,medical science and agriculture.
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Received: 17 May 2002
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2002, Vol. 11 
