English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Sulphide phases were studied in glassy and crystalline slags after smelting of polymetallic ores from the Jihlava and the Havlickův Brod Ore Districts. Sulphides usually form droplets from μm to mm in diameter. They exhibit complex composition with prevalence of pyrrhotite and sphalerite. Rudashevskyite (Fe,Zn)S occurs as a result of isomorphic substitution of Fe by Zn. Cu was rarely identified as native metal but usually it represents an admixture in a Cu-Fe-S phase with stoichiometry close to bornite. Pb is mainly present as galena or lead monoxide. Native silver as well as Ba-analogon of apatite were also identifi ed. For evaluation of potential release of heavy metals due to the preferential dissolution of sulphides and metallic phases, leaching tests in aqueous solution of sodium acetate were carried out. Data from leaching tests were compared with limit values defined by USEPA (1994) for solid wastes. The limit values were not exceeded only in case of Cd and As. The limit for Pb was exceeded in all cases except for one sample. For assessing of Zn and Cu limits for acute toxicity defi ned for aquatic habitats (USEPA 2006) were used; the obtained concentrations in leachates were several orders of magnitude higher.

SULFIDICKÉ FÁZE VE STŘEDOVĚKÝCH STRUSKÁCH PO TAVBĚ Ag RUD V JIHLAVSKÉM A HAVLÍČKOBRODSKÉM RUDNÍM REVÍRU