PHYSICO-CHEMICAL CHARACTERIZATION OF THE APATITE ORE OF MADAGASCAR BY THE OPTIC EMISSION SPECTROMETRY TO SOURCE PLASMA OF ARGON COUPLES BY INDUCTION (ICP-OES)

inorganic chemistry and industrial chemistry

The ore of apatite is part of ores that constitutes the basement of Madagascar. Numerous research have been done by different methods and one could note that the phosphor is the essential element that constitutes this ore. For our survey a new method has been used in order to really characterize the ore of apatite of Madagascar and this method that is the optic broadcast spectrométrie to source plasma of argon coupled by induction (ICP-OES). According to the literature and our research, this method has never been used for the analysis of the ore of apatite. For our work, one did the methodology that determines the zone of survey of the sampling, the characteristic and the temperature of plasma shown by the different in the first place represent the determination of the diagram of the device and the limits of detection of the optic broadcast spectrométrie then to source plasma of argon coupled by induction (ICP-OES). In second place the results and interpretations as well as the discussions of the analyses done on this ore of apatite. Our survey shows that the analysis of the ore of apatite by this method permits to determine with precision the cations essentials of which aluminum, calcium, chromium, copper, iron, magnesium, manganese, sulfur, sodium, silicon, titanium and the with their respective spectrgrams and the cations in state of trace by their respective concentrations as well as the concentrations of the metallic oxides that compose the ore of apatite of which the calcium carbonate to 56mgL-1et the dioxide of silicon to 0,96mgL-1 is the main oxides.

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