National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
ICP-OES with electrothermal vaporisation (ETV) as a possible tool for direct analysis of various biologic samples
Matějková, Stanislava
Solid sampling electrothermal vaporization (ETV) inductively coupled plasma optical emission spectroscopy (ICP-OES) enable simple and rapid multielemental analysis of major, minor and trace elements without the need for pre-treatment of solid or liquid samples. By comparison with more common ICP-OES combined with a solution nebulization, the risk of contamination of analysed samples is reduced. The detection limits and the sample quantity needed for analysis via ETV-ICP-OES decrease as a result of the high-efectivity transport of the sample aerosol into the ICP torch. The connection of ETV unit to simultaneous ICP-OES allows us the fast direct and fully automatised analysis of numerous samples. The technique enable usually the combined calibration with home-made or certified solid and aqueous standards. We developed the methodology for tracking the carboran-based candidate-drugs time dependent concentration and for their pharmacokinetic evaluation. The method is based on direct boron or together boron and cobalt contents direct estimation in little amounts of fresh frozen mice tissues (5 – 10 mg of serum, brain or liver). We created also methods for multielement analysis of plant material and for determination of potentionaly harmful elements in insect bodies.\n
ICP-OES with electrothermal vaporisation (ETV) as a possible tool for direct analysis of biologic samples
Matějková, Stanislava
Solid sampling electrothermal vaporization (ETV) inductively coupled plasma optical emission spectroscopy (ICP-OES) enable simple and rapid multielemental analysis of major, minor and trace elements without the need for pre-treatment of solid or liquid samples. By comparison with more common ICP-OES combined with a solution nebulization, the risk of contamination of analysed samples is reduced. The detection limits and the sample quantity needed for analysis via ETV-ICP-OES decrease as a result of the high-efectivity transport of the sample aerosol into the ICP torch. The connection of ETV unit to simultaneous ICP-OES allows us the fast direct and fully automatised analysis of numerous samples. The technique enable usually the combined calibration with home-made or certified solid and aqueous standards. We developed the methodology for tracking the carboran-based candidate-drugs time dependent concentration and for their pharmacokinetic evaluation. The method is based on direct boron or together boron and cobalt contents direct estimation in little amounts of fresh frozen mice tissues (5 – 10 mg of serum, brain or liver).\n
Quantification of Elements in Plant Materials by Electrothermal Vaporization Inductively Coupled Plasma Optical Emission Spectrometry
Šerá, Luisa ; Matějková, Stanislava ; Mestek, O.
This paper describes optimization and validation of operating conditions of electrothermal vaporization (ETV) inductively coupled plasma optical emission spectrometry (ICP-OES) method for quantification of Ba, Ca, Co, Cu, Fe, K, Mg, Mn, Na, P, Sr and Zn in plant materials. Besides the optimization of the temperature program, the selection of the gaseous modifier and the spectral wavelengths to be measured, it was studied how the sample quantity affects the result quality of the developed method. During the validation process, the accuracy and precision of the method were checked by analysis of a certified reference material. Limits of detection were estimated by analyses of blank samples. For almost all previously mentioned elements, the method meets requirements commonly applied on analyses by ETV combined with ICP-OES.

See also: similar author names
1 MATĚJKOVÁ, Štěpánka
1 Matějková, Sabina
3 Matějková, Soňa
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