Instrumental neutron activation analysis of gold and associated elements in ion-exchange resins

The present-day analysis of gold and associated elements uses the chemical, physicochemical and nuclear–physical methods. The majority of gold proceeding plants in the world make use of the higher accurate gold assaying method. Irrespective of some advantages, assaying is the most labor-intensive, time-consuming and expensive method. This article presents the results of the instrumental neutron activation analysis of gold and associated elements in ion-exchange resins using radionuclides having different lifetimes (shortand medium-lived radionuclides). The content of gold in ion-exchange resins is mostly determined using the classical assaying method. The conditions of ion-exchange resin radiation with regard to interference of arsenic in the determination of gold content are optimized. In the optimization test, the gold susceptibility limit made 0.3–0.5 g/t. Resin was activated using a neutron emitter for californium with the neutron flow rate of 1·109 n/s. The encapsulated source of 252Cf having a neutron yield of 1·109 n/s is placed in the neutron source storage container. The encapsulated 252Cf source is advantageous for the quick analysis and real-time information, low detection threshold of elements and for the applicability on a large scale. The procedure of the instrumental neutron activation analysis of gold and associates in ion–exchange resins using short-lived and averaged-lived radionuclides is developed.

Keywords: gold analysis, ion-exchange resin, resin activation, neutron flow, short-lived radionuclides, average-lived radionuclides, foreign elements, susceptibility limit, neutron activation analysis, assaying.
For citation:

Muzafarov A. M., Mustafoev M. A., Kulmatov R. A., Sharafutdinov U. Z. Instrumental neutron activation analysis of gold and associated elements in ion-exchange resins. MIAB. Mining Inf. Anal. Bull. 2021;(3-1):110—118. [In Russ]. DOI: 10.25018/0236_1493_2021_31_0_110.

Acknowledgements:
Issue number: 3
Year: 2021
Page number: 110-118
ISBN: 0236-1493
UDK: 621.039
DOI: 10.25018/0236_1493_2021_31_0_110
Article receipt date: 13.10.2020
Date of review receipt: 03.02.2021
Date of the editorial board′s decision on the article′s publishing: 10.02.2021
About authors:

Muzafarov A. M., Cand. Sci. (Eng.), Associate Professor, Chief Engineer of the Central Scientific Research Laboratory, NMMC;
Mustafoev M. A., Engineer of the Planning and Dispatching Department of the Hydrometallurgical Plant No. 2, NMMC;
Kulmatov R. A., Professor, Dr. Sci. (Chemical), of the National University of Uzbekistan;
Sharafutdinov U. Z., Dr. Sci. (Eng.), Associate Professor, Deputy Head of innovation center for the introduction of new technologies, NMMC.

 

For contacts:

A. M. Muzafarov, e-mail: u.sharafutdinov@ngmk.uz

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