By A. Strasheim
Read or Download Analytical Chemistry in the Exploration, Mining and Processing of Materials. Plenary Lectures Presented at the International Symposium on Analytical Chemistry in the Exploration, Mining and Processing of Materials, Johannesburg, RSA, 23–27 August 1976 PDF
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Extra info for Analytical Chemistry in the Exploration, Mining and Processing of Materials. Plenary Lectures Presented at the International Symposium on Analytical Chemistry in the Exploration, Mining and Processing of Materials, Johannesburg, RSA, 23–27 August 1976
Sample text
The quantitative determination of BN in the presence of SiCU in residues, can be done by reinforcing the BN-peak (11). The peak height ratios change with the BN concentration ratios in the sample. With the application of the microprobe for determinations of inclusions in steel or concentration profiles we leave the field of quantitative analysis. The determination of substances on metallic surfaces should resort under « topological analysis. Results are reported as "mass/surface area" (jig/cm ).
Pig. 7. Laser crater in steel, depth and diameter in \xm Shop floor control. g. temperature, exhaust gas composition and also the free oxygen content of the steel bath by EMP-measurements as well as the calculation of dissolved Al from these data. The process-computer can obtain data from the composition of input materials and the product specification. Therefore, it will become possible in future that high speed analysis during the production process can be replaced by a more accurate analysis of the input Ferrous metals 1493 materials and the fast identification of the final products.
It is often, however, still necessary to add a releasing agent or do a further separation to overcome the interferences from the coexisting metals or Ag. Using a solvent extraction in which the solvent chosen is readily combustable, often results in a signal enhancement, in addition to effecting the desired separation. In this regard, MIBK is most commonly employed. Recently a number of researchers have suggested the use of the higher tem perature, nitrous oxide-acetylene flame as a method of reducing inter ferences.