FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2042551036> ?p ?o ?g. }

• W2042551036 endingPage "777" @default.
• W2042551036 startingPage "760" @default.
• W2042551036 abstract "Abstract Ochreous precipitate and water samples were collected from the surroundings of seven closed sulphide mines in Finland. In the Hammaslahti Zn–Cu–Au mine, Otravaara pyrite mine and Paroistenjarvi Cu–W–As mine, the collection was repeated in different seasons to study mineralogical and geochemical variations of precipitates. The sampling was done in 1999–2002 from the ditches and drainage ponds of the tailings and waste rock piles that are susceptible to seasonal changes. Mineralogy of the precipitates was evaluated by X-ray diffraction (XRD) and infrared spectroscopy (IR), and precipitate geochemistry was examined by selective extractions. Schwertmannite (Fe 8 O 8 (OH) 6 SO 4 ) was the most typical Fe hydroxide mineral found. Goethite was almost as common as schwertmannite, was often poorly ordered, and contained up to 10 wt.% of SO 4 . Goethite and schwertmannite were commonly found as mixtures, and they occurred in similar pH and SO 4 concentrations. Ferrihydrite (nominally Fe 5 HO 8  · 4H 2 O) was typically found in areas not influenced by acid mine drainage, and also in acid mine waters with high organic matter or As content. Jarosite (KFe 3 (SO 4 ) 2 (OH) 6 ) was found only in one site. In addition, some gypsum (CaSO 4  · 2H 2 O) and aluminous sulphate precipitates (presumably basaluminite, Al 4 (SO 4 )(OH) 10  · 5H 2 O) were identified. Selective extractions showed that acid extracts Fe tot /S tot -ratios of schwertmannite and goethite samples were similar, but the ratio of oxalate-extractable to total Fe, Fe ox /Fe tot , of goethite samples were lower than those of the schwertmannite samples. Only Al, Si and As were bound to precipitates in substantial amounts, up to several wt.%. In schwertmannites and goethites, Al, Cu, Co, Mn and Zn were mostly structural, substituting for Fe in an Fe oxyhydroxide structure or bound to surface adsorption sites in pores limited by diffusion. In ferrihydrites, heavy metals were also partly bound in adsorbed form dissolving in acid ammonium acetate. Ferrihydrites and goethites were more enriched in Co, Mn and Zn than schwertmannites, but schwertmannites and ferrihydrites were more enriched in As than goethites. Mineralogical and geochemical evidence showed that in the spring, after the snowmelt, the acid mine drainage precipitates were predominantly schwertmannite, and were partly transformed during warm summer months to goethite. The phase transformation of precipitates was followed by a decrease in pH values and increase in SO 4 concentrations of waters. Adsorbed As retarded the phase transformation." @default.
• W2042551036 created "2016-06-24" @default.
• W2042551036 creator A5012763217 @default.
• W2042551036 creator A5073819937 @default.
• W2042551036 creator A5081639001 @default.
• W2042551036 date "2007-04-01" @default.
• W2042551036 modified "2023-09-26" @default.
• W2042551036 title "Seasonal variations of ochreous precipitates in mine effluents in Finland" @default.
• W2042551036 cites W1970986233 @default.
• W2042551036 cites W1990140430 @default.
• W2042551036 cites W1998882371 @default.
• W2042551036 cites W2003204539 @default.
• W2042551036 cites W2005348107 @default.
• W2042551036 cites W2006348957 @default.
• W2042551036 cites W2008606740 @default.
• W2042551036 cites W2013454669 @default.
• W2042551036 cites W2014773699 @default.
• W2042551036 cites W2018713720 @default.
• W2042551036 cites W2018794374 @default.
• W2042551036 cites W2019153840 @default.
• W2042551036 cites W2024881919 @default.
• W2042551036 cites W2025084080 @default.
• W2042551036 cites W2026282088 @default.
• W2042551036 cites W2029742834 @default.
• W2042551036 cites W2030153086 @default.
• W2042551036 cites W2034359695 @default.
• W2042551036 cites W2044581429 @default.
• W2042551036 cites W2047830833 @default.
• W2042551036 cites W2053735131 @default.
• W2042551036 cites W2054988703 @default.
• W2042551036 cites W2057544040 @default.
• W2042551036 cites W2062192005 @default.
• W2042551036 cites W2063906411 @default.
• W2042551036 cites W2068436354 @default.
• W2042551036 cites W2078616161 @default.
• W2042551036 cites W2084148668 @default.
• W2042551036 cites W2085232767 @default.
• W2042551036 cites W2089542527 @default.
• W2042551036 cites W2090466557 @default.
• W2042551036 cites W2090930486 @default.
• W2042551036 cites W2094989692 @default.
• W2042551036 cites W2098141096 @default.
• W2042551036 cites W2112308962 @default.
• W2042551036 cites W2116634224 @default.
• W2042551036 cites W2126145881 @default.
• W2042551036 cites W2133476129 @default.
• W2042551036 cites W2144971286 @default.
• W2042551036 cites W2147474202 @default.
• W2042551036 cites W2159049505 @default.
• W2042551036 cites W2162659825 @default.
• W2042551036 cites W2165296657 @default.
• W2042551036 cites W2167815577 @default.
• W2042551036 cites W2264185303 @default.
• W2042551036 cites W2303962126 @default.
• W2042551036 cites W2328021621 @default.
• W2042551036 cites W2464426383 @default.
• W2042551036 doi "https://doi.org/10.1016/j.apgeochem.2006.12.016" @default.
• W2042551036 hasPublicationYear "2007" @default.
• W2042551036 type Work @default.
• W2042551036 sameAs 2042551036 @default.
• W2042551036 citedByCount "74" @default.
• W2042551036 countsByYear W20425510362012 @default.
• W2042551036 countsByYear W20425510362013 @default.
• W2042551036 countsByYear W20425510362014 @default.
• W2042551036 countsByYear W20425510362015 @default.
• W2042551036 countsByYear W20425510362016 @default.
• W2042551036 countsByYear W20425510362017 @default.
• W2042551036 countsByYear W20425510362018 @default.
• W2042551036 countsByYear W20425510362019 @default.
• W2042551036 countsByYear W20425510362020 @default.
• W2042551036 countsByYear W20425510362021 @default.
• W2042551036 countsByYear W20425510362022 @default.
• W2042551036 crossrefType "journal-article" @default.
• W2042551036 hasAuthorship W2042551036A5012763217 @default.
• W2042551036 hasAuthorship W2042551036A5073819937 @default.
• W2042551036 hasAuthorship W2042551036A5081639001 @default.
• W2042551036 hasConcept C107054158 @default.
• W2042551036 hasConcept C107872376 @default.
• W2042551036 hasConcept C111368507 @default.
• W2042551036 hasConcept C125403950 @default.
• W2042551036 hasConcept C127313418 @default.
• W2042551036 hasConcept C147455438 @default.
• W2042551036 hasConcept C153294291 @default.
• W2042551036 hasConcept C17409809 @default.
• W2042551036 hasConcept C185592680 @default.
• W2042551036 hasConcept C187320778 @default.
• W2042551036 hasConcept C18903297 @default.
• W2042551036 hasConcept C205649164 @default.
• W2042551036 hasConcept C39432304 @default.
• W2042551036 hasConcept C76886044 @default.
• W2042551036 hasConcept C86803240 @default.
• W2042551036 hasConcept C87717796 @default.
• W2042551036 hasConceptScore W2042551036C107054158 @default.
• W2042551036 hasConceptScore W2042551036C107872376 @default.
• W2042551036 hasConceptScore W2042551036C111368507 @default.
• W2042551036 hasConceptScore W2042551036C125403950 @default.
• W2042551036 hasConceptScore W2042551036C127313418 @default.
• W2042551036 hasConceptScore W2042551036C147455438 @default.

• next