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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.47A [2008] >
IJC-A Vol.47A(10) [October 2008] >
| Title: | A rapid spectrophotometric method for the determination of molybdenum using ferron in industrial and environmental samples |
| Authors: | Kumar, Anil
Dass, Rameshwar |
| Issue Date: | Oct-2008 |
| Publisher: | CSIR |
| IPC Code: | Int. Cl. ⁸ G01N21/25 |
| Abstract: | Ferron has been used as an analytical reagent for the extractive spectrophotometric determination of molybdenum(V) obtained from the reduction of molybdenum(VI) with ascorbic acid. Molybdenum(V) in presence of a large number of cations, anions and complexing agents forms a yellow complex with ferron that is quantitatively extractable into tri-n-octylamine-chloroform from
1 M H₂SO₄ medium. The complex is stable for at least 24 h and shows an absorption maximum at 425 nm with molar absorptivity and Sandell’s sensitivity of 3.96×10³ l mol⁻¹ cm⁻¹ and 0.02525
μg cm⁻² Mo(V), respectively. The method obeys Beer’s law up to
31 μg ml⁻¹ Mo(V). For ten replicate determinations of
10 μg ml⁻¹ Mo(V), the relative standard deviation is found
to be 0.54%. The method is simple, selective, precise and rapid, and has been satisfactorily applied to the determination of molybdenum in aqueous, synthetic and technical samples of diverse matrices. |
| Page(s): | 1533-1536 |
| ISSN: | 0376-4710 |
| Source: | IJC-A Vol.47A(10) [October 2008]
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