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http://nopr.niscpr.res.in/handle/123456789/18644| Title: | Picolinaldehyde nicotinoylhydrazone for trace level separation and spectrophotometric determination of copper(II) |
| Authors: | Pawar, R B Padgaonkar, S B Sawant, A D |
| Issue Date: | Dec-2001 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A sensitive method is proposed for extraction and spectrophotometric determination of copper(II) at trace levels using picolinaldehyde nicotinoylhydrazone (PANH) as an analytical reagent. The yellow coloured PANH-Cu(II) complex, extracted into chloroform in the pH range 8.5-10.5, shows maximum absorbance at 380 nm. Beer's law is obeyed over the range 10-300 ng ml-1 of copper(II). The molar absorptivity and the Sandell's sensitivity for copper(II )-PANH system has been found to be 5.8×104 l mol -1 em-1 and 1.1 ng cm-2 respectively. The extracted species has a 1:2 (metal:ligand) stoichiometry. The proposed method is highly sensitive, selective, simple and rapid , and has been applied for accurate determination of copper in alloys and pharmaceutical samples. |
| Page(s): | 1359-1361 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.40A(12) [December 2001] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 40A(12) 1359-1361.pdf | 677.62 kB | Adobe PDF | View/Open |
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