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• W2072857260 abstract "In this work, a flow analysis system with hydride generation and Fourier transform infrared (FTIR) spectrometric detection has been developed for the determination of antimony in pharmaceuticals. The method is based on the on-line mineralization/oxidation of the organic antimonials present in the sample and pre-reduction of Sb(V) to Sb(III) with K2S2O8 and KI, respectively; prior to the stibine generation. The gaseous SbH3 is separated from the solution in a gas phase separator, and transported by means of a nitrogen carrier into a short pathway (10 cm) IR gas cell, where the corresponding FTIR spectrum is acquired by accumulating 3 scans in a continuous mode. The 1893 cm−1 band was used for the quantification of the antimony. The procedure is carried out in a closed system, which reduces sample handling and makes possible the complete automation of the antimony determination. The figures of merit of the proposed method (linear range: 0–600 mg l−1, limit of detection (3σ)=0.9 mg l−1, limit of quantification (10σ)=3 mg Sb l−1, precision (R.S.D.) less than 1% and sample frequency=28 h−1), are appropriate for the designed application. Furthermore, precise and accurate results were found for the analysis of different antimonial pharmaceutical samples, indicating that the methodology developed represents a valid alternative for the determination of antimony in pharmaceuticals, which could be suitable for the routine control analysis." @default.
• W2072857260 created "2016-06-24" @default.
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• W2072857260 date "2003-04-10" @default.
• W2072857260 modified "2023-10-17" @default.
• W2072857260 title "Flow analysis–hydride generation–Fourier transform infrared spectrometric determination of antimony in pharmaceuticals" @default.
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• W2072857260 doi "https://doi.org/10.1016/s0039-9140(02)00648-3" @default.
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