Document Detail


Efficiency of Pt and Ir modifiers for the simultaneous determination of As, Se and In in a sodium sulphate matrix by electrothermal atomic absorption spectrometry.
MedLine Citation:
PMID:  18968909     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The effect of pre-reduced Pt and Ir modifiers towards simultaneous determination of As, Se and In in a sodium sulphate matrix was investigated. In spite of application of very isothermal THGA atomizer, negative influence of the matrix is pronounced. The efficiency of iridium modifier is somewhat higher than that of platinum modifier. However compared to palladium modifier both are significantly less effective in sulphate media. Taking into account our previous data, effectiveness of platinum group metal (PGM) modifiers in the determination of As, Se and In in the presence of sodium sulphate increases in the order Ru<Rh approximately Pt<Ir<Pd. This order is opposite to the data on enthalpy of formation of PGM sulphides. This supports our hypothesis that effectiveness of PGM modifiers in the presence of sulphate matrix is determined mainly by stability of the corresponding sulphides. Efforts to enhance the effectiveness of Pt modifier mixing it with small (10-20%) amounts of Pd, Rh or Ir were not successful. Although mixture containing equal amounts of Pd, Pt, Rh and Ru is relatively effective, pure pre-reduced Pd is the best modifier for the simultaneous determination of As, Se and In in a sulphate media.
Authors:
Anatoly B Volynsky; Rainer Wennrich
Related Documents :
23066869 - Trait vs. phylogenetic diversity as predictors of competition and community composition...
9458099 - Lewis and secretor gene dosages affect ca19-9 and du-pan-2 serum levels in normal indiv...
1711889 - Influence of selenium on the efficiency of fungicide action against certain fungi.
2624359 - Determination of selenium in foods by inductively-coupled plasma atomic emission spectr...
9395689 - A comparative survey of leguminous plants as sources of the isoflavones, genistein and ...
11537499 - Comparative effects of selenite and selenate on nitrate assimilation in barley seedlings.
18584909 - Abyssal food limitation, ecosystem structure and climate change.
10596299 - Evaluation of the hazards of industrial exposure to tricresyl phosphate: a review and i...
8640219 - Identification of sex-specific quantitative trait loci controlling alcohol preference i...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Talanta     Volume:  59     ISSN:  1873-3573     ISO Abbreviation:  Talanta     Publication Date:  2003 Feb 
Date Detail:
Created Date:  2008-10-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  England    
Other Details:
Languages:  eng     Pagination:  277-86     Citation Subset:  -    
Affiliation:
Department of Analytical Chemistry, UFZ Centre for Environmental Research Leipzig-Halle, Permoserstrasse 15, D-04318 Leipzig, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Single-mismatch detection using nucleic acid molecular 'light switch'.
Next Document:  Separation/preconcentration of trace heavy metals in urine, sediment and dialysis concentrates by co...