"US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Photochemical source of metals for sediments" . . . "A mass budget study of major in-lake Al fluxes, palaeolimnological data on a >10,000 years old sediment record, and photochemical experiments performed at Ple\u0161n\u00E9 Lake (Czech Republic) suggest that photochemical liberation of organically-bound aluminium (Al) and iron (Fe) by solar radiation is a significant natural source of their ionic species for lakes and subsequent oxyhydroxides for sediments. The results show that photo-chemically induced transformation of dissolved Al and Fe to solid oxyhydroxides deposited to Ple\u0161n\u00E9 Lake sediment dominated (91 and 73%, respectively) their sedimentary flux throughout the pre-industrial era, since soil formation in the catchment. We hypothesise that the same Al and Fe transporting process occurs in other lakes and coastal marine areas and is ecologically important because Al and Fe oxyhydroxides can bind trace metals and phosphorus." . "Fotochemick\u00FD zdroj kov\u016F pro sedimenty"@cs . "[AA87D8CA9815]" . "Fotochemick\u00FD zdroj kov\u016F pro sedimenty"@cs . "photo-chemistry; climate change; palaeolimnology"@en . "14" . "Photochemical source of metals for sediments"@en . "Environmental Science and Technology" . . . . . "Porcal, Petr" . . "2"^^ . "5"^^ . "Norton, S. A." . . . "P(GA206/06/0410), Z(AV0Z60170517), Z(MSM6007665801)" . . "0013-936X" . "Kop\u00E1\u010Dek, Ji\u0159\u00ED" . "RIV/60077344:_____/06:00042488" . "RIV/60077344:_____/06:00042488!RIV07-AV0-60077344" . "Photochemical source of metals for sediments"@en . "A mass budget study of major in-lake Al fluxes, palaeolimnological data on a >10,000 years old sediment record, and photochemical experiments performed at Ple\u0161n\u00E9 Lake (Czech Republic) suggest that photochemical liberation of organically-bound aluminium (Al) and iron (Fe) by solar radiation is a significant natural source of their ionic species for lakes and subsequent oxyhydroxides for sediments. The results show that photo-chemically induced transformation of dissolved Al and Fe to solid oxyhydroxides deposited to Ple\u0161n\u00E9 Lake sediment dominated (91 and 73%, respectively) their sedimentary flux throughout the pre-industrial era, since soil formation in the catchment. We hypothesise that the same Al and Fe transporting process occurs in other lakes and coastal marine areas and is ecologically important because Al and Fe oxyhydroxides can bind trace metals and phosphorus."@en . "4455;4459" . "40" . "Mare\u0161ov\u00E1, M." . . . . "492001" . "5"^^ . . . "Vesel\u00FD, J." . . . . "Photochemical source of metals for sediments" . . "L\u00E1tkov\u00E1 bilance hlavn\u00EDch tok\u016F Al, paleolimnologick\u00FD rozbor sediment\u016F (st\u00E1\u0159\u00ED 0 a\u017E >10000 let) a fotochemick\u00E9 experimenty v Ple\u0161n\u00E9m jeze\u0159e (\u010Cesk\u00E1 republika) ukazuj\u00ED, \u017Ee fotochemick\u00E9 uvol\u0148ov\u00E1n\u00ED Al a Fe z organick\u00FDch komplex\u016F slune\u010Dn\u00EDm z\u00E1\u0159en\u00EDm je v\u00FDznamn\u00FDm p\u0159\u00EDrodn\u00EDm zdrojem jejich iontov\u00FDch forem pro jezern\u00ED vodu a n\u00E1sledn\u011B (po hydrol\u00FDze a vysr\u00E1\u017Een\u00ED) i zdrojem jejich hydroxid\u016F pro sedimenty. V\u00FDsledky ukazuj\u00ED, \u017Ee fotochemick\u00E1 transformace rozpu\u0161t\u011Bn\u00E9ho Al a Fe na pevn\u00E9 hydroxidy byla jejich hlavn\u00EDm zdrojem pro sediment (91% pro Al a 73% pro Fe) b\u011Bhem preindustri\u00E1ln\u00EDho obdob\u00ED, v podstat\u011B od okam\u017Eiku tvorby p\u016Fd v povod\u00ED. P\u0159edpokl\u00E1d\u00E1me, \u017Ee podobn\u00FD transportn\u00ED mechanismus prob\u00EDh\u00E1 i v ostatn\u00EDch jezerech a pob\u0159e\u017En\u00EDch mo\u0159\u00EDch a je ekologicky v\u00FDznamn\u00FD, proto\u017Ee hydroxidy Al a Fe mohou poutat a imobilizovat dal\u0161\u00ED kovy a fosfor."@cs .