"1"^^ . "10" . . . "S\u00FDkorov\u00E1, Jana" . "P(GA105/06/0653), P(GA105/08/0913), Z(AV0Z30460519)" . "Critical evaluation of sequential extraction and sink-float methods used for the determination of Ga and Ge affinity in lignite"@en . "308549" . "The affinites of Ga and Ge in lignite were determined using sequential extraction (SE) and element affinity calculation (EAC) based on sink-float data. For this study a bulk lignite sample was fractioned into two sets. The first set of samples (A) constisted of the different grain sizes fractions, the second one set (B) was prepared by density fractionation. Sequential extractions (1) were perfomed on both sets of fraction with very good agreement between determined organic elements affinites (OEA of GA evaluated from A data is 32%, from B data 35%, OEA of Ge evaluated from A data is 31% and from B data 26%). The data of B lignite fractions were evaluated using two element affinity calculations: (a) EAC (I) of Klika and Kolomazn\u00EDk (2) and b) newly prepared subroutine EAC (II) based on guantitative contens of lignite macerals and minerals. There was also good agreement between both methods obtained (OEA of Ga calculated by EAC (I) is 83% and by EAC (II) 77%, OEA of Ge Calculated by EAC (I) is 89% and by EAC (II) 97%). The significant differences of organic elements affinites of Ga and Ge evaluated by sequential extraction and by element affinity calculation based on sink-float data are discussed."@en . . "Seidlerov\u00E1, Jana" . "88" . . "Ambru\u017Eov\u00E1, Lenka" . "The affinites of Ga and Ge in lignite were determined using sequential extraction (SE) and element affinity calculation (EAC) based on sink-float data. For this study a bulk lignite sample was fractioned into two sets. The first set of samples (A) constisted of the different grain sizes fractions, the second one set (B) was prepared by density fractionation. Sequential extractions (1) were perfomed on both sets of fraction with very good agreement between determined organic elements affinites (OEA of GA evaluated from A data is 32%, from B data 35%, OEA of Ge evaluated from A data is 31% and from B data 26%). The data of B lignite fractions were evaluated using two element affinity calculations: (a) EAC (I) of Klika and Kolomazn\u00EDk (2) and b) newly prepared subroutine EAC (II) based on guantitative contens of lignite macerals and minerals. There was also good agreement between both methods obtained (OEA of Ga calculated by EAC (I) is 83% and by EAC (II) 77%, OEA of Ge Calculated by EAC (I) is 89% and by EAC (II) 97%). The significant differences of organic elements affinites of Ga and Ge evaluated by sequential extraction and by element affinity calculation based on sink-float data are discussed." . . "Fuel" . . . . "Kolomazn\u00EDk, Ivan" . "8"^^ . "000268164800005" . . "Critical evaluation of sequential extraction and sink-float methods used for the determination of Ga and Ge affinity in lignite" . . "Klika, Zden\u011Bk" . . . "NL - Nizozemsko" . . . . . "Critical evaluation of sequential extraction and sink-float methods used for the determination of Ga and Ge affinity in lignite" . "RIV/61989100:27600/09:00022430" . "Ga, Ge, Sequential extraction, Density fractionation, Organic and inorganic affinity"@en . "Critical evaluation of sequential extraction and sink-float methods used for the determination of Ga and Ge affinity in lignite"@en . . "5"^^ . "[467E670663C7]" . "27600" . "RIV/61989100:27600/09:00022430!RIV12-GA0-27600___" . . . "0016-2361" . .