Spectrophotometric determination of vanadium and indium
| Main Authors: | A. K. Sangahi, Rekha Rani, Rajeeva Ranjan, S. Sharma |
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| Format: | Article |
| Bahasa: | eng |
| Terbitan: |
, 2012
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5763117 |
Daftar Isi:
- University Department of Chemistry, Magadh University, Bodh Gaya-824 234, Bihar, India Manuscript received 19 March 2010, accepted 19 August 2011 Extraction of vanadium and indium as their N-methylethylxanthocarbamate has been carried out by coprecipitation onto microcrystalline naphthalene. Their spectrophotometric determination has been done in the range 425- 435 nm by replacement with copper. Beer's law is obeyed in the concentration range 0-40 μg for vanadium and 0-7 μg for indium per 10 ml of the final chloroform solution. The molar absorptivities and sensitivities in the terms of Sandell's definition were calculated to be 1.469 x 104 L mol-1 cm-1 and 3.5 x 10-3 μg cm-2 for vanadium and 2.19 x 10-4 L moJ-1 cm-1 and 5.3 x 10-3 μg cm-2 for indium, respectively. The percentage co-precipitations of vanadium and indium are 99.2 and 98.5 respectively. The method is suitable for preconcentration of these metal ions from a larger volume ( -100 ml) of the aqueous phase, and has been employed for their determination in standard reference materials and synthetic samples.