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  4. Release of arsenic, antimony and bismuth from the graphite support in the presence of tungsten and palladium modifiers
 
research article

Release of arsenic, antimony and bismuth from the graphite support in the presence of tungsten and palladium modifiers

Slaveykova, Vera  
•
Manev, Stefan
•
Lazarov, Dobri
1999
Godishnik na Sofiiskiya Universitet \"Sv. Kliment Okhridski\", Khimicheski Fakultet

Electrothermal at. absorption spectrometry is applied to study the release of the arsenic, antimony and bismuth atoms from pyrocoated graphite support. The influence of the chem. modifiers tungsten and palladium on the absorbance time profiles is exptl. evaluated. The Sturgeon's approach is used for estn. of the apparent activation energies of the atom release. The addn. of modifier leads to enhancement of the activation energies and changes the kind of the vaporizing species for analytes. The possible mechanisms of vaporization and atomization for As, Sb and Bi are discussed. [on SciFinder (R)]

  • Details
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Type
research article
Author(s)
Slaveykova, Vera  
Manev, Stefan
Lazarov, Dobri
Date Issued

1999

Published in
Godishnik na Sofiiskiya Universitet \"Sv. Kliment Okhridski\", Khimicheski Fakultet
Volume

89

Start page

47

End page

54

Subjects

Atomic absorption spectrometry (electrothermal

•

release of arsenic

•

antimony and bismuth from graphite support in presence of tungsten and palladium modifiers for electrothermal at. absorption spectrometry)

•

arsenic release graphite tungsten palladium modifier electrothermal atomic absorption

•

antimony release graphite tungsten palladium modifier electrothermal atomic absorption

•

bismuth release graphite tungsten palladium modifier electrothermal atomic absorption

Editorial or Peer reviewed

REVIEWED

Written at

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EPFL units
GR-SLV  
Available on Infoscience
November 27, 2007
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/14961
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