2005
LIBS in Environmental Analysis
NOVOTNÝ, Karel, Alice STAŇKOVÁ, Vítězslav OTRUBA a Viktor KANICKÝZákladní údaje
Originální název
LIBS in Environmental Analysis
Název česky
LIBS v analýze životního prostředí
Autoři
NOVOTNÝ, Karel (203 Česká republika, garant), Alice STAŇKOVÁ (203 Česká republika), Vítězslav OTRUBA (203 Česká republika) a Viktor KANICKÝ (203 Česká republika)
Vydání
Pardubice, International Conference on Inorganic Environmental Analysis - Proceedings of the 4th Conference, od s. 85-87, 3 s. 2005
Nakladatel
Spektroskopická společnost J.M.Marci, Univerzita Pardubice
Další údaje
Jazyk
angličtina
Typ výsledku
Stať ve sborníku
Obor
10406 Analytical chemistry
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Kód RIV
RIV/00216224:14310/05:00014697
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova anglicky
Laser ablation; LIBS;Time resolved emission spectrometry; Soil
Změněno: 3. 2. 2006 19:52, prof. RNDr. Viktor Kanický, DrSc.
V originále
Laser induced breakdown spectrometry (LIBS) plays nowadays important role in environmental chemistry. Recently, LIBS has been applied to many kinds of samples such as liquid samples, direct analysis of solid samples and depth profiling of layered materials. LIBS has various advantages over more conventional methods of atomic emission spectroscopy. The most relevant characteristics are direct analysis of solid samples, no sample preparation, a small sample requirement, the possibility of on-line analysis, localized microanalysis, a single step of vaporization and excitation and simultaneous multielement analysis. In the present work, LIBS has been applied to the determination of heavy metals in soil samples. Samples were presented for the analysis as pressed pellets prepared by mixing with powdered silver binder or poured pellets with epoxide resin binder. Q-switched Nd:YAG laser with the wavelength of 1064 nm and repetition rate of 10 Hz was used for ablation of prepared pellets. Sample was attached to a holder, which was a part of a laboratory-made ablation chamber. This holder was mounted on a computer controlled xy translation stages. Emission of breakdown plasma from chamber was collected by a fiber optic system and delivered onto an entrance slit of the TRIAX 320 monochromator. The monochromator was equipped with a photomultiplier Hamamatsu R928 gated by a laboratory-built control unit. Time resolved signal was recorded by the digital storage oscilloscope TDS1012. The time dependences of LIBS signals were obtained and the dependences of signal on element concentration were constructed.
Česky
Laserem indukovaná spektrometrie LIBS hraje v současné době v analýze životního prostředí významnou úlohu.
Návaznosti
MSM0021622412, záměr |
|