Kinetic study of atomization in atomic absorption analysis of solid samples using flame-furnace atomizer

• Autorzy: Kostyantyn Lugovyy , Olexander Buhay , Antonina Alemasova
• Języki publikacji: EN

Abstrakty

EN

Direct solid sampling analysis in atomic absorption spectrometry using flame-furnace atomizer allows to significantly decrease analysis duration, to avoid sample pollution and to exclude toxic reagents. The choice of chemical modifiers that decreases the detection limit and improves the repeatability of results is based on the mechanism of analyte-free atom formation. The kinetic approach developed here allows determination of pre-exponential factors k0 and apparent activation energies Ea of the atomization processes for Pb(II) and Cd(II) compounds and enables use of CaCO3 and KHF2 as effective chemical modifiers for soil samples. A fast and precise technique for lead and cadmium determination in soils using the proposed chemical modifiers was developed.

Słowa kluczowe

EN

Atomic absorption analysis; Solid samples; Flame-furnace atomizer; Kinetic study

• Czasopismo: Open Chemistry
• Rocznik: 2010
• Tom: 8
• Numer: 6
• Strony: 1244-1250

Daty

wydano

2010-12-01

online

2010-10-08

Twórcy

autor

Kostyantyn Lugovyy

• The Donetsk National University, Donetsk, 83000, Ukraine

autor

Olexander Buhay

• The Institute of Applied Physics, National Academy of Science of Ukraine, Sumy, 40030, Ukraine

autor

Antonina Alemasova

• The Donetsk National University, Donetsk, 83000, Ukraine,

Bibliografia

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Identyfikatory

DOI

10.2478/s11532-010-0103-2