Germanium speciation in lignite from a germanium-bearing deposit in Primorye |
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| Authors: | A S Yakushevich S Yu Bratskaya V V Ivanov N V Polyakova V A Avramenko |
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| Institution: | 19421. Institute of Chemistry, Far East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022, Russia
29421. Far East Geological Institute, Far East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022, Russia
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| Abstract: | We studied a number of chemical characteristics in the coals of the Spetsugli germanium-bearing area of the Pavlovskoe coalfield in southern Primorye. It was found that the coals show variable contents of ash, extractable organic matter (OM), and germanium. No less than 60% germanium in the coals are bound to mobile OM, including 25–60% in complex compounds of humic acids and 8–39% in the low-molecular-weight fraction of OM not precipitated by acids. It was shown that germanium can be partly accumulated in coals as organic compounds owing to the dissolution of the mineral forms of germanium by humic acids. |
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