1. Laboratory of Precious Metals, Kazmekhanobr State Scientific Production Association of Industrial Ecology, Almaty, Kazakhstan
2. School of Mining and Geosciences (SMG), Nazarbayev University, Astana, Kazakhstan
3. Department of Metallurgical Processes, Heat Engineering and Technology of Special Materials, Satbayev University, Almaty, Kazakhstan
4. School of Material Science and Green Technology, Kazakh-British Technical University, Almaty, Kazakhstan