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- W2999021570 abstract "Manganese bearing carbonate, sulfate and niobate minerals were analyzed by ICP emission spectroscopic technique with good reproducibilitis. The supression effect of acids were removed by keeping the acid concentrations the same in both sample and standard solutions. So far as our studies have concerned, in the ICP analysis of manganese minerals, all interferences caused by coexisting elements were found to be additive. The corrections were made by substracting the emission intensity of a diverse element at the wavelength of analyzing elements from the total emission intensity. Analysis of carbonate and sulfate minerals : About 10 mg of weighed sample is dissolved in dilute hydrochloric acid and diluted with water to 20-50 ml, and emission intensities are recorded. The concentration of analyzing elements are determined by the calibration curve method. Reproducibilities calculated from the seven repeated runs of the analysis for a rhodochrosite sample were as follows : MnO wt. %, 48.2% (S. D. 1.38%), FeO 8.86% (S. D. 0.56%), CaO 1.62% (S. D. 2.07%), MgO 1.05% (S. D. 1.08%), ZnO 0.033% (S. D. 13.1%). The procedure is also applicable to acid soluble manganese oxide minerals. Analysis of niobate minerals : About 10 mg of weighed sample is dissolved in the mixed acid of hydrofluoric and sulfuric, evaporated to the strong acid fume and cooled.The residue is taken in dilute sulfuric acid containing hydrogen peroxide, and diluted to 100 ml and then emission spectroscopic intensities are collected. Results of analyses of four columbite samples from different localities are given in tables together with specific gravity data and unit cell parameters." @default.
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- W2999021570 date "1980-01-01" @default.
- W2999021570 modified "2023-09-26" @default.
- W2999021570 title "Inductively coupled plasma (ICP) emission spectroscopic analysis of manganese minerals" @default.
- W2999021570 doi "https://doi.org/10.2465/gkk1952.14.special3_129" @default.
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