Spectrophotometric determination of copper in alloys using naphthazarin
Chaisuksant, R; Palkawong-Na-Ayuthaya, W; Grudpan, K
| HERO ID | 644966 |
|---|---|
| In Press | No |
| Year | 2000 |
| Title | Spectrophotometric determination of copper in alloys using naphthazarin |
| Authors | Chaisuksant, R; Palkawong-Na-Ayuthaya, W; Grudpan, K |
| Journal | Talanta |
| Volume | 53 |
| Issue | 3 |
| Page Numbers | 579-585 |
| Abstract | Naphthazarin (5,8-dihydroxy-1,4-naphthoquinone; Naph) is proposed as a chromogenic reagent for the spectrophotometric determination of copper(II). The polynuclear complex has a mole ratio of Cu:Naph=4:6 in a 50% v/v ethanol/water medium containing 0.1 M ammonium acetate and 1.5% (w/v) sodium dodecyl sulfate. The copper-naphthazarin complex shows an absorption maximum at 330 nm with a molar absorptivity of 1.84x10(4) l mol(-1) cm(-1). Beer's law is obeyed up to 4.5 ppm of copper(II). The method was applied for copper determination in alloy samples with satisfactory results. |
| Pmid | 18968145 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Is Qa | No |