"15"^^ . . "Studium interakce laserov\u00E9ho z\u00E1\u0159en\u00ED s pr\u00E1\u0161kov\u00FDmi materi\u00E1ly v optick\u00E9 emisn\u00ED spektrometrii s induk\u010Dn\u011B v\u00E1zan\u00FDm plazmatem"@cs . . "Determination of elemental composition of powdered materials is frequent analytical task. Direct analysis is often performed by X-ray fluorescence spectrometry, traces are determined by neutron activation analysis or emission spectrography/spectrometry with arc excitation. The samples are often brought into solutions and analysed using inductively coupled plasma (ICP) with atomic emission spectrometry (AES) or mass spectrometry (MS). However, decomposition of some materials is difficult or incomplete, residual solutions represent environmentally troublesome waste, and moreover, samples are diluted and limits of detection deteriorate. One of possibilities for direct analysis of solids is the sampling of materials by laser ablation (LA) into ICP source.So far, mostly compact or powdered samples fused with a flux were introduced into ICP by LA and little was reported on LA of pressed pellets. The aim of this project is to study interactions of laser radiation with pressed powdered materials and to"@en . . . "0"^^ . "1"^^ . "0"^^ . "Stanoven\u00ED prvkov\u00E9ho slo\u017Een\u00ED pr\u00E1\u0161kov\u00FDch materi\u00E1l\u016F je \u010Dast\u00FDm analytick\u00FDm \u00FAkolem. Bez rozkladu se vzorky obvykle analyzuj\u00ED rentgenovou spektrometri\u00ED, stopov\u00E9 obsahy se stanovuj\u00ED neutronovou aktiva\u010Dn\u00ED anal\u00FDzou nebo emisn\u00ED spektrografi\u00ED s obloukov\u00FDm buzen\u00EDm. \u010Casto se vzorky p\u0159ev\u00E1d\u011Bj\u00ED do roztoku pro stanoven\u00ED atomovou absorp\u010Dn\u00ED spektrometri\u00ED nebo spektrometri\u00ED s induk\u010Dn\u011B v\u00E1zan\u00FDm plazmatem (ICP), a to optickou (AES) nebo hmotnostn\u00ED (MS). Rozklad vzorku je v mnoha p\u0159\u00EDpadech obt\u00ED\u017En\u00FD nebo ne\u00FApln\u00FD, pomocn\u00E9 chemik\u00E1lie zat\u011B\u017Euj\u00ED \u017Eivotn\u00ED prost\u0159ed\u00ED a nav\u00EDc doch\u00E1z\u00ED ke z\u0159ed\u011Bn\u00ED vzorku a zhor\u0161en\u00ED mez\u00ED detekce. Jednou z mo\u017Enost\u00ED p\u0159\u00EDm\u00E9 anal\u00FDzy pevn\u00FDch l\u00E1tek bez p\u0159edchoz\u00EDho chemick\u00E9ho rozkladu je p\u0159\u00EDprava aerosolu pro ICP spektrometrii ablac\u00ED vzorku laserov\u00FDm paprskem(LA). V 90. letech se LA-ICP-AES roz\u0161\u00ED\u0159ila v anal\u00FDze kompaktn\u00EDch vzork\u016F (ocel\u00ED, skel, keramiky, polymer\u016F). V posledn\u00EDch letech bylo publikov\u00E1no n\u011Bkolik prac\u00ED v\u011Bnovan\u00FDch \u00FAvodn\u00EDm experiment\u016Fm s laserovou ablac\u00ED pr\u00E1\u0161kov\u00FDch materi\u00E1l\u016F. C\u00EDlem tohoto projektu j"@cs . "Neuvedeno."@en . . . "The study of interaction of laser radiation with pressed powdered materials for laser ablation inductively coupled plasma atomic emission spectrometry"@en . . . . "2560"^^ . . . "2560"^^ . "15"^^ .