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

• Authors: Kostyantyn Lugovyy , Olexander Buhay , Antonina Alemasova
• Languages of publication: EN

Abstracts

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.

Keywords

EN

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

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2014
• Volume: 12
• Issue: 3
• Pages: 386-390

Dates

published

1 - 3 - 2014

online

21 - 12 - 2013

Contributors

author

Kostyantyn Lugovyy

• The Donetsk National University

author

Olexander Buhay

• National Academy of Science of Ukraine

author

Antonina Alemasova

• The Donetsk National University

References

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Identifiers

DOI

10.2478/s11532-013-0381-6