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Spectrophotometric determination of obidoxime chloride as its Pd(II) complex in water and injections

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1987
Authors
Karljiković-Rajić, Katarina
Stanković, B
Binenfeld, Z.J.
Article (Published version)
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Abstract
It has been established that obidoxime chloride reacts with palladium(II) chloride in the pH range 3.9-8.0 and forms a yellow water-soluble (1:1) complex with maximum absorbance at 355 nm. By applying the methods of Sommer, Nash and Job involving non-equimolar solutions the conditional stability constant of the complex, at the optimum pH of 6.3 and an ionic strength μ = 0.55 M, is found to be 105.3. The molar absorptivity at 355 nm is 3.16 × 104 l mol-1 cm-1 at pH 6.3. Beer's law is obeyed up to 20 μmol l-1 obidoxime chloride concentration. The detection limit of the method is 0.36 μg ml-1. The relative standard deviation (n = 10) varies over the range 1.10-2.66%. The proposed method was found to be suitable for the accurate and sensitive analysis of obidoxime chloride in water and injection solutions.
Keywords:
colorimetry. / compleximetry / Obidoxime chloride: palladium(II) chloride
Source:
Journal of Pharmaceutical and Biomedical Analysis, 1987, 5, 2, 141-149
Note:
  • Serbian Research Fund

DOI: 10.1016/0731-7085(87)80016-X

ISSN: 0731-7085

Scopus: 2-s2.0-0023178981
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URI
http://farfar.pharmacy.bg.ac.rs/handle/123456789/33
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  • Radovi istraživača / Researchers’ publications
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Pharmacy

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