Novel spectrophotometric method for the determination of molybdenum in a PVA medium
In: Analytical sciences, Jg. 18 (2002), Heft 2, S. 125-127
Online
academicJournal
- print, 26 ref
Zugriff:
A novel spectrophotometric method for the determination of trace molybdenum in the presence of a large amount of tungsten was developed. This proposed method was based on the formation of a green charge-transfer polyoxometalate, molybdo-tungstophosphate-3,3',5,5'-tetramethylbenzidine-N-propanesulfonic, which was solubilized and stabilized in a PVA medium; the wavelength of the maximum absorption was at 660 nm. Beer's law was obeyed in the Mo concentration range of 0.04 - 1.6 μg ml-1 The molar absorptivity was 1.35 x 104 l mol-1 cm-1. The developed method avoided the interference of WVI, and was conveniently applied to analyses of some tungsten ores containing MoVI with satisfactory results.
Titel: |
Novel spectrophotometric method for the determination of molybdenum in a PVA medium
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Autor/in / Beteiligte Person: | DI, Junwei ; WU, Ying ; TU, Yifeng ; BI, Shuping |
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Zeitschrift: | Analytical sciences, Jg. 18 (2002), Heft 2, S. 125-127 |
Veröffentlichung: | Tokyo: Japan Society for Analytical Chemistry, 2002 |
Medientyp: | academicJournal |
Umfang: | print, 26 ref |
ISSN: | 0910-6340 (print) |
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