Spectrophotometric Determination of Copper in Alkaline Solution of EDTA-Copper
نویسندگان
چکیده
منابع مشابه
Spectrophotometric Determination of Copper
The utility of Patton and Reeder’s indicator, HHSNNA, for the trace spectrophotometric and visual colorimetric determination of Cu 2+ is explored. A wine red complex of composition 1:1 is found to be formed between Cu 2+ and HHSNNA. The complex has λmax at 530 nm with ε = 25,558 L mole -1 cm -1 and is stable for more than 2 hrs. Beer’s law is obeyed between 0 to 1.5 ppm. The developed procedure...
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Spectrophotometric method for determination of cu(II) in the trace quantities was developed by using piperazine dithiocarbamate as ligand in ammonium chloride-ammonium hydroxide medium at pH -9.5. The procedure developed was applied for the estimation of cu(II) in microgram quantities in the water samples and the method developed was found to be simple and sensitive. Spectrophotometry is one of...
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15 صفحه اولSpectrophotometric Determination of Microgram Quantities of Copper in Biologic Materials.
A procedurefor the determination of microgramquantities of copper in biologicmaterial is described. The sample is wet-ashed with a nitric acid-perchloric acid mixture. The copper is extracted from an alkaline solutionof the ash with a solutionof diphenylcarbazide in benzene. Absorbanceof the red complex is read at 540 m1&. The copperin as little as0.5 ml. of serum can be determined and the meth...
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An extraction-spectrophotometric method for the determination of traces of copper (II) is described. The method is based on the quantitative extraction of copper as tetrabutylammonium tetrathiocyanato copper (II) into methyl isobutyl ketone, followed by spectrophotometric determination, using eriochrome black T as a metallochromic indicator. The red-violet mixed complex of copper absorbs at...
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ژورنال
عنوان ژورنال: Journal of the Metal Finishing Society of Japan
سال: 1970
ISSN: 1884-3395,0026-0614
DOI: 10.4139/sfj1950.21.73