Determination of Ultratrace Amounts of Osmium Using Catalytic Wave of OsO4-Bromate System by Voltammetric Method.

• ENSAFI Ali A.

  College of Chemistry, Isfahan University of Technology

• ZAREI K.

  College of Chemistry, Isfahan University of Technology

Abstract

Highly sensitive catalytic waves of OsO₄-bromate linear sweep voltammetric and square wave voltammetric techniques were proposed for the determination of ultratrace amounts of osmium. Under optimized conditions, the catalytic linear sweep voltammetric procedure gives excellent reproducibility and limits of detection and a linear dynamic range and gives a low signal for background, whereas the square wave voltammetric technique gives higher sensitivity, but the background signal was high and the linear dynamic range was narrower. The methods are suitable for the determination of osmium as osmium tetroxide as low as 1.5×10^-10 mol/l. The currents are linear for the concentration ranges of 0.10 - 210.0 ng/ml and 0.20 - 2.0 ng/ml for linear sweep voltammetry and square wave voltammetry, respectively.

Journal

• Analytical Sciences

  Analytical Sciences 15 (9), 851-855, 1999

  The Japan Society for Analytical Chemistry

Keywords

• Analytical Chemistry

Details

• CRID: 1390282679231262336
• NII Article ID: 130004440140
• NII Article ID: 10004707423
• NII Book ID: AA10500785
• DOI: 10.2116/analsci.15.851
• COI: 1:CAS:528:DyaK1MXlvV2qtL8%3D
• ISSN: 13482246
• ISSN: 09106340
• NDL BIB ID: 4868052
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4868052
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.15.851.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.15.851/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci/15/9/15_9_851/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed