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Article: Research data from Benha University update understanding of chemical research.
- Article from:
- Chemicals & Chemistry
- Article date:
- November 13, 2009
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According to a study from Banha, Egypt, "A simple, selective, highly sensitive and accurate procedure for the determination of trace amounts of copper has been developed based on solid-phase spectrophotometry. Copper reacts with 5-(2-benzothiazolylazo)-8-hydroxyquinoline (BTAHQ) to give a complex with high molar absorptivity (3.17 x 10(7) L mol(-1) cm(-1), 3.07 x 10(8) L mol(-1) cm(-1), 1.22 x 10(9) L mol(-1) cm(-1), and 1.80 x 10(9) L mol(-1) cm(-1)), fixed on a Dowex 1-X8 type anion-exchange resin for 10 mL, 100 mL, 500 mL, and 1000 mL, respectively."
"The absorbance at 667 nm and 800 nm packed in a 1.0 mm cell was measured directly. Calibration is linear over ...
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Article: Findings from Benha University broaden ...
Physics Week;
May 26, 2009 ;
621 words
... ... A.A. Mahmoud and colleagues, Benha University. The researchers concluded: "Moreover ... information, contact M.A.A. Mahmoud, Benha University 13518, Faculty Science, Dept. of ... Electronics, Magnetic Field, Physics, Benha University. This article was prepared by Physics ...
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