"2009-04-22+02:00"^^ . . "."@en . "http://www.isvav.cz/projectDetail.do?rowId=GP203/07/P439"^^ . "2009-12-31+01:00"^^ . "Study of properties of aerosol generated by laser beam interaction with powdered samples for plasma spectrometry techniques"@en . . " inductively coupled plasma" . "P\u0159\u00EDm\u00E1 anal\u00FDza pevn\u00FDch materi\u00E1l\u016F nevy\u017Eaduje \u010Dasto velmi zdlouhav\u00E9 rozpou\u0161t\u011Bn\u00ED vzork\u016F, kter\u00E9 nav\u00EDc znamen\u00E1 velk\u00E9 riziko kontaminace nebo ztr\u00E1ty t\u011Bkav\u00FDch slo\u017Eek. Mezi metody p\u0159\u00EDm\u00E9 anal\u00FDzy pat\u0159\u00ED nap\u0159. rentgenov\u00E1 spektrometrie, neutronov\u00E1 aktiva\u010Dn\u00ED anal\u00FDza nebo spektrografie s\u00A0obloukov\u00FDm buzen\u00EDm. Jedn\u00EDm z\u00A0\u0159e\u0161en\u00ED je tak\u00E9 pou\u017Eit\u00ED spektrometrie induk\u010Dn\u011B v\u00E1zan\u00E9ho plazmatu s\u00A0optickou nebo hmotnostn\u00ED detekc\u00ED (ICP-OES/MS) pro anal\u00FDzu aerosolu vznikl\u00E9ho ablac\u00ED vzorku laserov\u00FDm paprskem (LA). Slo\u017Een\u00ED aerosolu, kter\u00FD je analyzov\u00E1n v\u00A0ICP, je ovlivn\u011Bno mnoha okolnostmi v\u00A0pr\u016Fb\u011Bhu interakce laserov\u00E9ho z\u00E1\u0159en\u00ED se vzorkem (vlastnosti vzorku, parametry laseru, abla\u010Dn\u00ED komora..), transportu vzorku do ICP (nosn\u00FD plyn, materi\u00E1l, pr\u016Fm\u011Br a d\u00E9lka potrub\u00ED) a odpa\u0159ov\u00E1n\u00ED v\u00A0plazmov\u00E9m zdroji. B\u011Bhem t\u011Bchto d\u011Bj\u016F doch\u00E1z\u00ED k\u00A0frakcionaci prvk\u016F, co\u017E znamen\u00E1, \u017Ee slo\u017Een\u00ED aerosolu odpa\u0159en\u00E9ho v\u00A0ICP se li\u0161\u00ED od slo\u017Een\u00ED vzorku. Pr\u00E1\u0161kov\u00E9 materi\u00E1ly jsou analyzov\u00E1ny ve form\u011B tablet, p\u0159ipraven\u00FDch lisov\u00E1n\u00EDm, odl\u00E9v\u00E1n\u00EDm nebo taven\u00EDm" . "2007-01-01+01:00"^^ . "Direct analysis of powdered materials does not require a time consuming sample dissolution which also means a risk of contamination or loss of volatilize components. Methods of direct analysis are e.g. X-ray spectrometry, neutron activated analysis or arc spectrometry. The solution can be also inductively coupled plasma spectrometry with optical or mass detection (ICP-OES/MS) for analysis of aerosol arised by laser ablation (LA) of the sample. The aerosol composition which is analysed in ICP is influenced by many conditions during the laser-sample interaction (sample chracter, laser paremeters, ablated cell..), the aerosol transport into ICP (carrier gas, material, diameter and lenght of a tubing) and vaporisation in plasma. During these processes element fractionation occurs which means the different composition of the evaporated aerosol in ICP and the sample composition. Powdered materials are analysed in a form of pellets prepared by pressing, pouring or fusing of the homogenised"@en . " fractionation" . . "\u0158e\u0161en\u00ED projektu prob\u00EDhalo v souladu s p\u016Fvodn\u00EDm pl\u00E1nem, c\u00EDle byly spln\u011Bny. Byly studov\u00E1ny koncentrace a velikost \u010D\u00E1stic, vznikl\u00FDch p\u0159i laserov\u00E9 ablaci oceli, karbid\u016F wolframu, skla a r\u016Fzn\u00FDch pr\u00E1\u0161kov\u00FDch materi\u00E1l\u016F, kde byl sledov\u00E1n vliv pojiva a zp\u016Fsobu p\u0159\u00EDp"@cs . . . . " aerosol" . . . . "3"^^ . "0"^^ . "3"^^ . . "Studium vlastnost\u00ED aerosolu generovan\u00E9ho interakc\u00ED laserov\u00E9ho z\u00E1\u0159en\u00ED s pr\u00E1\u0161kov\u00FDmi materi\u00E1ly pro metody plazmov\u00E9 spektrometrie" . "1"^^ . . . . . "GP203/07/P439" . "0"^^ . . " powdered materials" . . . . "laser ablation" . "2015-01-22+01:00"^^ . "laser ablation; aerosol; fractionation; powdered materials; inductively coupled plasma; spectrometry"@en .