. . . . . "T\u011B\u017Ek\u00E9 kovy pat\u0159\u00ED mezi nejrizikov\u011Bj\u0161\u00ED kontaminanty, kter\u00E9 se dost\u00E1vaj\u00ED do vodn\u00EDch tok\u016F v urbanizovan\u00FDch oblastech nejen z plo\u0161n\u00FDch zdroj\u016F, ale zejm\u00E9na ze zdroj\u016F bodov\u00FDch, jak\u00FDmi jsou v\u00FDusti de\u0161\u0165ov\u00E9 kanalizace nebo v\u00FDusti p\u0159epadu odleh\u010Dovac\u00EDch komorjednotn\u00E9 kanalizace. Dosud m\u00E1lo prob\u00E1danou problematikou z\u016Fst\u00E1v\u00E1 vazba t\u011B\u017Ek\u00FDch kov\u016F na dnov\u00FD sediment a suspendovan\u00E9 l\u00E1tky a z\u00E1konitosti zp\u011Btn\u00E9ho uvol\u0148ov\u00E1n\u00ED do vodn\u00EDho prost\u0159ed\u00ED. Navrhovan\u00FD projekt se bude zab\u00FDvat studiem mo\u017Enosti remobilizace t\u011B\u017Ek\u00FDchkov\u016F ze sedimentu zp\u011Bt do vody a s t\u00EDm souvisej\u00EDc\u00EDmi zm\u011Bnami rozd\u011Blovac\u00EDch (distribu\u010Dn\u00EDch) koeficient\u016F mezi sedimentem a vodou. Distribu\u010Dn\u00ED koeficient je jedn\u00EDm z nejd\u016Fle\u017Eit\u011Bj\u0161\u00EDch parametr\u016F pou\u017E\u00EDvan\u00FDch pro odvozen\u00ED migra\u010Dn\u00EDho potenci\u00E1lu \u0161kodlivinyp\u0159\u00EDtomn\u00E9 ve vodn\u00E9f\u00E1zi, kter\u00E1 je v kontaktu se sedimentem a suspendovan\u00FDmi l\u00E1tkami. Znalost tohoto migra\u010Dn\u00EDho potenci\u00E1lu je nezbytn\u011B nutn\u00E1 p\u0159i hodnocen\u00ED ekologick\u00E9ho rizika dan\u00E9 \u0161kodliviny. P\u0159i hodnocen\u00ED ekologick\u00E9ho rizika je tak\u00E9 d\u016Fle\u017Eit\u00E9 zn\u00E1t" . . . "The distribution of heavy metals in the environment of small urban creeks is strongly impacted by the type of urban drainage, which also modifies their biological availability. Only pH has showed, from all tested parameters (concentration of NO3-, Ca and"@en . "0"^^ . "1"^^ . . "Na z\u00E1klad\u011B v\u00FDsledk\u016F z\u00EDskan\u00FDch v\u00A0r\u00E1mci \u0159e\u0161en\u00ED projektu je mo\u017En\u00E9 konstatovat, \u017Ee distribuce t\u011B\u017Ek\u00FDch kov\u016F v\u00A0prost\u0159ed\u00ED drobn\u00FDch urbanizovan\u00FDch tok\u016F je v\u00FDrazn\u011B ovlivn\u011Bna typem m\u011Bstsk\u00E9ho odvodn\u011Bn\u00ED, kter\u00E9 modifikuje i biologickou dostupnost t\u011B\u017Ek\u00FDch kov\u016F. Z\u00A0test"@cs . "30"^^ . . "30"^^ . . . . "http://www.isvav.cz/projectDetail.do?rowId=GP203/03/P044"^^ . . "Remobilization of heavy metals and changes in their distribution coefficients as part of ecological risk assessment in urban watersheds of small streams"@en . "0"^^ . "Neuvedeno."@en . . "GP203/03/P044" . . "Heavy metals belong to the most dangerous group of substances, which enter streams in urban areas. They originate mostly from point sources; especially outlets of combined and rain sewers and some area sources as well. The process of the binding of heavymetals to bottom sediments is still not well understood and also there is also a lack of knowledge about their remobilization back to water. The suggested project will study the possibilities of remobilization of heavy metals from sediment to water andthe changes in distribution coefficients of heavy metals between sediment and water. The distribution coefficient is one of the most important parameters for assessing the migration potential of a contaminant present in the water phase, which is incontact with sediment or suspended matter. The value of migration potential is necessary for assessing the ecological risk of a particular substance. It is also very important to know the distribution coefficient for an organism and its environment"@en . "Remobilizace t\u011B\u017Ek\u00FDch kov\u016F a zm\u011Bny jejich distribu\u010Dn\u00EDch koeficient\u016F jako sou\u010D\u00E1st hodnocen\u00ED ekologick\u00FDch rizik v urbanizovan\u00FDch povod\u00EDch drobn\u00FDch tok\u016F" . . . . . . "2008-05-19+02:00"^^ .