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| Rapid Determination of Silver, Tin, Boron,Molybdenum and Lead in Geochemical Samples by AC Arc Direct-Reading Spectrometry |
| Received:June 02, 2013 Revised:July 02, 2013 |
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| DOI：doi:10.3969/j.issn.2095-1035.2013.04.003 |
| KeyWord:AC arc；direct-reading spectrometry；silver；tin；boron；molybdenum；Lead |
| Author | Institution |
| ZHANG Wenhua |
北京瑞利分析仪器公司，北京 |
| WANG Yandong |
北京瑞利分析仪器公司，北京 |
| WU Dongmei |
北京瑞利分析仪器公司，北京 |
| ZHAO Yanqiu |
北京瑞利分析仪器公司，北京 |
| FU Guoyu |
北京瑞利分析仪器公司，北京 |
| CHANG Wei |
北京瑞利分析仪器公司，北京 |
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| Abstract: |
| We employed the AC arc direct-reading spectrometer which was originally invented in China to determine silver, tin, boron, molybdenum and lead in geochemical samples. The spectrometer consists of the AC arc excitation source, concave grating spectroscope, photomultiplier tube (PMT) receiver, intelligent measurement and control system for fast data acquisition and processing. Using this instrument, the photographic plate and the related cumbersome procedures such as photo development and spectrum interpretation that need to be used in the traditional one-meter or two-meters grating spectrographs can be replaced. Under optimized conditions, we quickly determine the concentration of silver, tin, boron, molybdenum and lead in geochemical powder sample by the AC arc direct-reading spectrometer. The detection limit(DL) for silver, tin, boron, molybdenum and lead is 0.012, 0.74, 1.65, 0.20, 1.30 μg/g, respectively. The precision and accuracy of the instrument fully meets the requirements of related industry standards. The measured results agree well with that of ICP-MS and ICP-AES. |
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