Document Type : Research Paper

Author

• سید رضا یوسفی

Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI

Abstract

In this work, on-line homogenous sedimentation method was used for in situ production of micro particles as an adsorbent for solid phase extraction of molybdenum. After dissolution of yellow cake and conversion of molybdenum (VI) to a hydrophobic complex, n- dodecyltrimethyl ammonium bromide was added to the sample solution as a precursor. Precipitant reagent (sodium hexafluoride) was added to this solution via a T connection in a flow system. micro particles, produced due to interaction of precursor with precipitant reagent, adsorbed the molybdenum complex. After filtration, desorption reagent was flowed over the filter and so desorbed Molybdenum was introduced to the ICP-OES for measurement. Under optimum conditions, linear range of 0.2-200 µg/L was obtained, with limit of detection of 0.05 µg/g. Repeatability of method (RSD) was 8.1% and 4.3% for concentration of 10 and 100 µg/g, respectively. So, this method could be used for precise and accurate determination of molybdenum in yellow cake samples.

Keywords

• Micro particles
• Molybdenum
• Homogenous sedimentation, Yellow Cake, ICP-OES

Main Subjects

• NUCLEAR FUEL CYCLE AND FUEL MATERIALS