Development of rapid solvent extraction based radioanalytical technique for estimation of Sr-90 in the presence of natural and anthropogenic radionuclides

作者：Reddy Priyanka J^*; Pulhani Vandana; Dhole S D; Dahiwale S S; Bhade S P D; Anilkumar S; Singh Rajvir

来源：Journal of Radioanalytical and Nuclear Chemistry, 2017, 314(1): 359-370.

DOI：10.1007/s10967-017-5375-y

• Sr-90
• Solvent extraction
• LSS
• Interference
• Sodium salicylate
• Cerenkov counting

A radiochemical technique for estimation of Sr-90 concentration by direct extraction of Y-90 with bis (2-ethylhexyl) phosphate (HDEHP) in toluene was developed and standardized. About 90% Sr-90 retained in the aqueous phase at the optimized pH 4-4.5. Cerenkov counting with 0.04 g mL(-1) sodium salicylate as a wavelength shifter resulted in 7.5 fold increase its Cerenkov counting efficiency. The method was validated by estimating Sr-90 in certified reference materials like, IAEA TEL 2016-03 drinking water, Spruce needle and IAEA-156 Clover. The interference of naturally occurring Ra and its beta progeny especially Pb was eliminated by means of Cerenkov counting. Conventional radiochemical separation was used to compare Sr-90 activity in effluent samples.

• 出版日期2017-10