Spectrophotometric determination of trace thorium with DBN-arsenazo
Creators
- 1. Academia Sinica, Shanghai, SH (China). Shanghai Inst. of Nuclear Research
Description
The application of DBN-arsenazo in determination of trace thorium was described. In aqueous solution, the thorium DBN-arsenazo complex exhibited maximum absorbance at 630 nm. Molar absorptivity in 1 mol/L HCl was calculated (εmax = 8.6 x 104 L · cm-1). The uranium interference can be tolerated even if its intensity is 90 times higher than thorium itself . Beer's law is obeyed in the concentration range of 0-13 μg Th/10 ml with correlation coefficient r = 0.9991. In 30% TBP-kerosene solution, trace thorium can be directly determined by DBN-arsenazo complex exhibited maximum absorbance at 620 nm in the inter soluble system. Molar absorptivity was calculated (εmax 4.9 x 104 L · mol-1 · cm-1). Beer's law is obeyed in the concentration range of 0-14 μg Th/10 ml
Additional details
Publishing Information
- Journal Title
- Nuclear Techniques
- Journal Volume
- 17
- Journal Issue
- 3
- Journal Page Range
- p. 168-171.
- ISSN
- 0253-3219
- CODEN
- NUTEDL
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 25049005
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ABSORPTION SPECTRA; ARSENAZO; COMPLEXES; CORRELATION FUNCTIONS; INTERFERING ELEMENTS; SPECTROPHOTOMETRY; STABILITY; THORIUM; TRACE AMOUNTS
- Descriptors DEC
- ACTINIDES; AROMATICS; ARSENIC COMPOUNDS; ARSONIC ACIDS; AZO COMPOUNDS; ELEMENTS; FUNCTIONS; HYDROXY COMPOUNDS; METALS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; PHENOLS; POLYPHENOLS; REAGENTS; SPECTRA; SULFONIC ACIDS