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Changing the Face of Analytical Science

出版	Mintek, 1997
URL	http://books.google.com.hk/books?id=uIDVjgEACAAJ&hl=&source=gbs_api

註釋The main function of Mintek's Analytical Science Division is to perform whatever analyses are required by the technical divisions of Mintek. The varied and ever-changing nature of Mintek's research means that samples submitted to the Division reflect this compositional and temporal variety. A wide range of sample treatments is needed and 'difficult' samples abound. With the closure or downscaling of similar minerals research facilities worldwide, Mintek is now in a unique position in being able to take the investigation of new metallurgical extraction processes through from laboratory to pilot plant scale in an integrated, holistic approach.^L^LOver the past 10 years the inductively coupled plasma-atomic emission spectrometry (ICP-AES) technique has achieved pre-eminence and currently handles more than 50 per cent of all samples and produces some 75 per cent of the analytical results.^L^LFire assay continues to be important, as well as classical chemical techniques such as wet chemistry methods. Chromatography in its various forms finds widespread use and has emerged as a stronger technique over the past 10 years. The inductively coupled plasma-mass spectrometry (ICP-MS) technique has reached a level of maturity, and is ever more being used for trace analysis of base metals impurities in various matrices.^L^LThe atomic absorption technique in its two variants - flame and furnace - is still used, although generally only samples with one or two analyses are assigned to this section. Electrothermal atomisation is only put to minor use.^L^LMintek's involvement with the Harmony gold mine in the Free State has led to the building of a small gold refinery to purify the 25 t/y gold production from the Harmony and Unisel mines. The division is also the only manufacturer of certified reference materials that are internationally accepted as being of a high standard.