Application of inductively coupled plasma mass spectrometry for total metal determination in silicon-containing solid samples using the microwave-assisted nitric acid–hydrofluoric acid–hydrogen peroxide–boric acid digestion system

1996 ◽  
Vol 11 (4) ◽  
pp. 287-296 ◽  
Author(s):  
Shaole Wu ◽  
Yu-Hui Zhao ◽  
Xinbang Feng ◽  
Adolph Wittmeier
2010 ◽  
Vol 93 (1) ◽  
pp. 323-326 ◽  
Author(s):  
Ni Zhang ◽  
Zhiying Ding ◽  
Hao Li ◽  
Xin Wang ◽  
Xiaodong Shao

Abstract A practical and nontarnishing method for the determination of trace nickel (Ni) in hydrogenated cottonseed oil by inductively coupled plasma/mass spectrometry (ICP/MS) was developed. In order to avoid tarnishing in the pretreatment of samples, the technology of pressurized PTFE vessel acid digestion was applied. The temperature and acid content in the digestion were optimized. The results showed that hydrogenated cottonseed oil could be digested completely by the proposed method. Compared with the U.S. Pharmacopeia 28 and British Pharmacopoeia 2003 methods, the developed method avoided the risk of using platinum and the tarnish from silica crucibles. In addition, the analytical cycle of the test solution was shortened by the use of ICP/MS instead of graphite furnace atomic absorption spectrophotometry.


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