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Title of Journal: Sci China Chem

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Abbravation: Science China Chemistry

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SP Science China Press

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DOI

10.1007/bf00205112

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1869-1870

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The interaction between furosemidepalladium II

Authors: CuiXia Li ShaoPu Liu ZhongFang Liu XiaoLi Hu
Publish Date: 2010/07/01
Volume: 53, Issue: 8, Pages: 1767-1777
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Abstract

In pH 45–70 BrittonRobinson buffer solution furosemide FUR reacted with Pd II to form a 11 anionic chelate This chelate could further react with such basic triphenylmethane dyes BTPMD as ethyl violet EV crystal violet CV methyl violet MV methyl green MeG and brilliant green BG to form 11 ionassociation complexes This not only resulted in the change of absorption spectra but also led to the significant enhancement of resonance Rayleigh scattering RRS secondorder scattering SOS and frequency doubling scattering FDS The maximum RRS wavelengths were located at 324 nm for the EV CV and MV system and 340 nm for the BG and MeG system The maximum SOS wavelengths were located at 550 nm for the EV CV BG and MeG system and 530 nm for the MV system The maximum scattering peaks of all the systems were at 392 nm for FDS The enhanced RRS SOS and FDS intensities were directly proportional to the concentration of FUR The detection limits for the different dye systems were 03–49 ng mL−1 for the RRS method 32–331 ng mL−1 for the SOS method and 90–857 ng mL−1 for the FDS method These methods could be used for the determination of trace amounts of FUR The effects of the formation of ternary ionassociation complexes on the spectral characteristics and intensities of absorption RRS SOS and FDS have been investigated The optimum conditions of these reactions the influencing factors and the analytical properties have been tested The influences of coexisting substances were tested by RRS method and the results showed that this method exhibited a high sensitivity Based on the aforementioned research the highly sensitive simple and rapid methods for the determination of trace amounts of FUR by resonance light scattering technique have been established which could be applied to the determination of FUR in tablet injection human serum and urine samples The composition and structure of the ternary ionassociation complex and the reaction mechanism were discussed

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