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Stopped-flow determination of diphacinone based on lanthanide-sensitized luminescence

✍ Scribed by S. Panadero; A. Gómez-Hens; D. Pŕez-Bendito

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
510 KB
Volume
280
Category
Article
ISSN
0003-2670

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✦ Synopsis

The stopped-flow mixing technique was used to investigate the application of kinetic methodology to complex formation reactions involving energy transfer processes. By using initial rate measurements a very rapid fluorimetric method was developed for the determination of diphacinone by formation of the ternary complex Eu(III)-diphacinone-ammonia in the presence of Triton X-100. Kinetic data can be obtained only 2-3 s after the reactants are mixed, which allows ready application of the method to routine analyses. The linear response range of the proposed method is OS-5 pg ml-' diphacinone and the mid-range relative standard deviation is ca. 2%. The mean recovery obtained in the analysis of serum samples was 98.3%.

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