Determination of Strontium-90 in Environmental Samples Containing Thorium
Analyst Pub Date: DOI: 10.1039/A701252G
Abstract
A method has been developed for the determination of 90Sr at low activities in environmental samples that also contain thorium. 90Sr is determined by separating and measuring its progeny 90Y. Thorium is removed by liquid–liquid extraction using 5% tri-n-octylphosphine oxide (TOPO) in toluene. A second liquid–liquid extraction with tributyl phosphate (TBP) is used to isolate 90Y from 90Sr. 90Y is then coprecipitated with stable yttrium oxalate. The recovery of yttrium, determined by weighing the yttrium oxalate, is 65–85%. The radiochemically separated 90Y is measured with a liquid scintillation analyzer using beta-liquid scintillation counting or Cerenkov counting. For quality control 90Sr was determined in IAEA reference materials. To demonstrate the applicability of the method, concentrations of 137Cs and 90Sr and Cs:Sr ratios are presented for contaminated surface soils from Maralinga, South Australia, and for coastal marine sediments from Port Phillip Bay, Victoria.
Recommended Literature
- [1] Excitable dynamics in the bromate–sulfite–ferrocyanide reaction J. Zagora,M. Vosla?,L. Schreiberová,I. SchreiberPhys. Chem. Chem. Phys., 2002,4, 1284-1291 10.1039/B110048C
- [2] Emergence of microfluidic wearable technologies Joo Chuan Yeo,KenryLab Chip, 2016,16, 4082-4090 10.1039/C6LC00926C
- [3] Excimer and exciplex formation in a pair of bright phosphorescent isomers constructed from Cu3(pyrazolate)3 and Cu3I3 coordination luminophores? Shun-Ze Zhan,Mian Li,Xiao-Ping Zhou,Dan Li,Seik Weng NgRSC Adv., 2011,1, 1457-1459 10.1039/C1RA00566A
- [4] EWOD-driven droplet microfluidic device integrated with optoelectronic tweezers as an automated platform for cellular isolation and analysis? Gaurav J. Shah,Eric P.-Y. Chiou,Ming C. Wu,Chang-Jin “CJ” KimLab Chip, 2009,9, 1732-1739 10.1039/B821508A
- [5] Evidence of rutile-to-anatase photo-induced electron transfer in mixed-phase TiO2 by solid-state NMR spectroscopy? Weili Dai,Guangjun Wu,Michael HungerChem. Commun., 2015,51, 13779-13782 10.1039/C5CC04971G
- [6] Excimer–monomer switch: a reaction-based approach for selective detection of fluoride? Qiao Song,Angela Bamesberger,Lingyun Yang,Haley Houtwed,Haishi CaoAnalyst, 2014,139, 3588-3592 10.1039/C4AN00522H
- [7] Fatty acid eutectic mixtures and derivatives from non-edible animal fat as phase change materials? Pau Gallart-Sirvent,Marc Martín,Gemma Villorbina,Mercè Balcells,Aran Solé,Luisa F. Cabeza,Ramon Canela-GarayoaRSC Adv., 2017,7, 24133-24139 10.1039/C7RA03845C
- [8] Excimer formation effects and trap-assisted charge recombination loss channels in organic solar cells of perylene diimide dimer acceptors? Min Kim,Jae-Joon Lee,Tengling Ye,Panagiotis E. Keivanidis,Kilwon ChoJ. Mater. Chem. C, 2020,8, 1686-1696 10.1039/C9TC04955J
- [9] Evolution in surface coverage of CH3NH3PbI3?XClXvia heat assisted solvent vapour treatment and their effects on photovoltaic performance of devices Dhirendra K. Chaudhary,Pramendra Kumar,Lokendra KumarRSC Adv., 2016,6, 94731-94738 10.1039/C6RA18729C
- [10] Establishing the accuracy of position-specific carbon isotope analysis of propane by GC-pyrolysis-GC-IRMS ChangjieLiu,PengLiu,XiaofengWang,XiaoqiangLi,JuskeHorita 10.1002/rcm.9494
Journal Name：Analyst
research_products
-
CAS no.: 89640-58-4
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)