Highly sensitive double-arc method of spectral analysis for gold and some scattered elements
Abstract
In the search for gold deposits since time immemorial successfully used schlich survey, based on the study of mechanical halos and scattering fluxes of nugget gold. The use of geochemical methods based on the direct indication of finely dispersed gold in samples of small weight has become possible only in recent years due to the introduction into practice of the adsorption-spectral method of analyzing lithochemical samples, proposed by N. I. Safronov. However, this method, which achieves a sensitivity of 1-3·10^(-6) %, involves complex preliminary chemical treatment of samples. Even more complicated is the chemical preparation of samples for analysis in the assay-spectral method (sensitivity 10^(-8) %). The chemical preparation of samples is somewhat simpler in the electrochemical-spectral method, which has approximately the same sensitivity as the adsorption-spectral.
References
- Safronov N. I., Polikarpochkin V. V. V., Utgof A. A. Spectrozolotometric survey as a method of prospecting for gold-ore deposits not accompanied by mechanical halos (placers). Proc. VITR. Series Exchange of Experience, 1960, iss. 36.
- Kovalchuk B. A., Stepanov N. T. Express method of determination of small gold contents at metallometric survey. Bulletin. NTI MGiON, 1960, No. 4 (28).
- Dobkhaeva E. D. Spectral analysis for gold with preliminary electrochemical enrichment of samples. Mat. Eighth Council of Employees of Geological Organizations, 1961, iss. 4.
- Zakharia N. F., Fuga N. A., Laiderman I. A. Application of chemical reactions in the process of spectral analysis. Zavodskaya Laboratoriya, 1956, No. 11.
- Mandelstamm S. L., Nedler V. V. On the sensitivity of emission spectral analysis Optics and Spectroscopy, 1961, iss. 3.
- Shaw D. M. The Geochemistry of Thallium. Coll.: Geochemistry of Rare Elements. PH of Foreign Literature, 1959.
- Approximate Quantitative Spectral Analysis of Mineral Raw Materials Based on Weakening the Intensity of Spectral Lines by Three Orders. Ed. M. M. Kler, Gosgeoltekhizdat, 1959.
- Obruchev V. A. Eugrafovskoye gold deposit and neighboring ones in the basin of the Onon River (in East Transbaikalia). Mat. for Geology of the USSR, 1929. vol. XXVI, iss. 2.
- Sergeev E. A., Margolin L. S., Stepanov P. A., Belobragina M. V. Highly sensitive spectral analysis of metallometric samples for chalcophilic elements. Proc. VITR. Series Exchange of Experience, 1959, iss. 13.