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http://nopr.niscpr.res.in/handle/123456789/40235| Title: | Dual wavelength spectrophotometric determination of copper with chlorophosphonazo- III |
| Authors: | Hong-Wen, Gao Peng-Fei, Zhang |
| Issue Date: | Sep-1995 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The dual wavelength spectrophotometric determination of copper has been developed with chlorophosphonazo-III (CPA-III) at pH 5. The Cu(ll)-CPA-lll reaction is sensitive and selective if DDTC is used for preconcentrating trace amounts of copper and separating other metal ions. The b-correction method can eliminate the effect of excess CPA-III from its Cu(ll) coloured solution to give out the real absorbance of the Cu-CPA-lll chelate. Beer's law is obeyed over the concentration range 0-1.20mg/l Cu and the molar absorptivity of Cu(CPA-III) at 610nm is 2.75 x 104I.mol-1 cm-1. The detection limit of copper is 0.005mg/l The method has been applied for the determination of trace amounts of copper in waste water. |
| Page(s): | 750-752 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.34A(09) [September 1995] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 34A(9) 750-752.pdf | 281.16 kB | Adobe PDF | View/Open |
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