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Benzeneacetaldehyde-4-hydroxy-α-oxo-aldoxime is proposed as a new sensitive and selective reagent for the spectrophotometric determination of cobalt. The reagent reacts with cobalt in the pH range 8.6–9.4 to form a yellow colored 1:3 chelate which is very well extracted in chloroform. Beer's law is obeyed in the concentration range 0.05–1.3 μg ml−1 cobalt. The molar absorptivity of the extracted species is 2.746×104 l mol−1 cm−1 at 390 nm. The proposed method is highly sensitive, selective, simple, rapid, accurate and has been satisfactorily applied for the determination of cobalt in synthetic mixtures, pharmaceutical samples, biological samples and alloys. 相似文献
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A simple and selective method is proposed for the extraction of cobalt(II) for its spectrophotometric determination using (HIMH) as an extractant. Cobalt(II) forms a yellow coloured complex with HIMH which can be extracted into chloroform. The calibration curve is rectilinear in the concentration range 0.1–5.0 μg ml−1 of cobalt(II). The extracted species shows an absorption maximum at 400 nm with molar absorptivity of 1.135×104 l mol−1 cm−1. The method has been applied for the determination of cobalt in synthetic mixtures, pharmaceutical, biological and high speed steel samples. 相似文献
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Mavle Rajendra Katkar Harishchandra Daundkar Balasaheb Malve Madhukar Krishnamurthy Rukmani 《平面色谱法杂志一现代薄层色谱法》2008,21(3):197-198
JPC – Journal of Planar Chromatography – Modern TLC - Endosulfan is commonly encountered in poisoning cases in India. In TLC the compound can be detected by spraying the plate with... 相似文献
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Daundkar Balasaheb B. Mavle Rajendra R. Malve Madhukar K. Krishnamurthy Rukmani 《平面色谱法杂志一现代薄层色谱法》2007,20(3):217-219
JPC – Journal of Planar Chromatography – Modern TLC - A new reagent has been developed for spectrophotometric quantification and thin-layer chromatographic (TLC) detection of the... 相似文献
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