Direct determination of nickel in xylene solutions of raw material for catalytic cracking with application of graphite furnace atomic absorption spectrometry

2013 ◽  
Vol 5 (1) ◽  
pp. 192-201 ◽  
Author(s):  
Zofia Kowalewska
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Catalytic Cracking ◽  
Graphite Furnace ◽  
Direct Determination ◽  
Absorption Spectrometry ◽  
Raw Material ◽  
Determination Of Nickel ◽  
Graphite Furnace Atomic Absorption

Direct determination of nickel in petroleum by solid sampling–graphite furnace atomic absorption spectrometry

2006 ◽  
Vol 386 (7-8) ◽  
pp. 2249-2253 ◽  
Author(s):  
Geisamanda Pedrini Brandão ◽  
Reinaldo Calixto de Campos ◽  
Eustáquio Vinicius Ribeiro de Castro ◽  
Honério Coutinho de Jesus
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Direct Determination ◽  
Absorption Spectrometry ◽  
Solid Sampling ◽  
Determination Of Nickel ◽  
Graphite Furnace Atomic Absorption

scholarly journals Determination of Lead in Croatian Wines by Graphite Furnace Atomic Absorption Spectrometry

2011 ◽  
Vol 62 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Blanka Tariba ◽  
Alica Pizent ◽  
Zorana Kljaković-Gašpić
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Accurate Determination ◽  
Direct Determination ◽  
Absorption Spectrometry ◽  
White Wine ◽  
Matrix Modifier ◽  
Graphite Furnace Atomic Absorption

Determination of Lead in Croatian Wines by Graphite Furnace Atomic Absorption SpectrometryA method has been developed for direct determination of lead in wine by graphite furnace atomic absorption spectrometry (GFAAS) with Zeeman-effect background correction. The thermal behaviour of Pb during pyrolysis and atomisation stages was investigated without matrix modifier and in the presence of Pd(NO3)2, Pd(NO3)2+ Mg(NO3)2× 6H2O, and NH4H2PO4+ Mg(NO3)2× 6H2O as matrix modifiers. A simple 1:1 dilution of wine samples with Pd(NO3)2as a matrix modifier proved optimal for accurate determination of Pb in wine. Mean recoveries were 106 % for red and 114 % for white wine, and the detection limit was 3 μg L-1. Within-run precision of measurements for red and white wine was 2.1 % and 1.8 %, respectively. The proposed method was applied for analysis of 23 Croatian wines. Median Pb concentrations were 33 μg L-1, range (16 to 49) μg L-1in commercially available wines and 46 μg L-1, range (14 to 559) μg L-1in home-made wines. There were no statistically significant differences (P<0.05) in Pb concentration between commercial and home-made wines or between red and white wines.

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