| Autor: |
Otomo, Makoto, Singh, Raj Bhushan |
| Zdroj: |
Analytical Sciences; June 1985, Vol. 1 Issue: 2 p165-168, 4p |
| Abstrakt: |
A new, heterocyclic hydrazone ligand, 2,2’-diquinolyl-2-quinolylhydrazone(DQQH), is synthesized and used for the spectrophotometric determination of traces of cadmium(ll). Cadmium(ll) is preliminarily extracted as the iodide complex into mesityl oxide from sulfuric acid solution. The cadmium(ll) is converted to a strongly colored complex by the subsequent treatment of the extract with a DQQH solution in benzene in the presence of an ammonia-sodium hydroxide solution. The analytical species of interest has an absorption maximum at 552 nm and obeys Beer’s law over the range up to 9x10-6M(mol dm-3) cadmium in the organic phase. The molar absorptivity is 9.15xl04dm3mol-1cm-1at 552 nm. The composition of the cadmium(ll)-DQQH complex and the effect of foreign ions on the determination of cadmium are also investigated. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Full text from SpringerLink