Lead and cadmium atomic absorption determination in solid carbonized food samples using flame-furnace atomizer

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

Abstrakty

EN

Direct atomic absorption solid sampling analysis using flame-furnace atomizer enables a significant decrease in the analysis duration, to avoid sample pollution and to exclude toxic reagents. The selection of the chemical modifiers decreasing the detection limit and improving the results repeatability is based on the analyte’s free atoms formation mechanism. The developed kinetic approach has allowed to determine pre-exponential factors k0 and apparent activation energies Ea of atomization processes for Pb(II) and Cd(II) compounds and to propose effective chemical modifiers sodium N,N-diethyldithiocarbamate and urea for food samples. The express and precision technique for lead and cadmium determination in food, using proposed chemical modifiers and carbonization techniques was developed.

Słowa kluczowe

EN

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

• Czasopismo: Open Chemistry
• Rocznik: 2014
• Tom: 12
• Numer: 3
• Strony: 386-390

Daty

wydano

2014-03-01

online

2013-12-21

Twórcy

autor

Kostyantyn Lugovyy

• The Donetsk National University

autor

Olexander Buhay

• National Academy of Science of Ukraine

autor

Antonina Alemasova

• The Donetsk National University,

Bibliografia

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Identyfikatory

DOI

10.2478/s11532-013-0381-6