Selective extraction of 90Sr in urine using 4′4"(5")di-tert-butyl dicyclohexano-18-crown-6 ether immobilized on polyacrylamide-coated magnetic nanoparticles

被引：6
|
作者：
Varve, Zack [1 ]
Lai, Edward P. C. [1 ]
Li, Chunsheng [2 ]
Sadi, Baki B. [2 ]
机构：
[1] Carleton Univ, Dept Chem, Ottawa, ON K1S 5B6, Canada
[2] Hlth Canada, Radiat Protect Bur, Ottawa, ON K1A 1C1, Canada
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2015年 / 303卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Sr-90; Human urine; Bioassay; Magnetic nanoparticles; Polyacrylamide coating; Liquid scintillation counting; SOLID-PHASE EXTRACTION; POLYMER;
D O I：
10.1007/s10967-014-3605-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
4'4 ''(5 '')di-tert-butyl dicyclohexano-18-crown-6 ether was immobilized onto the surface of iron oxide magnetic nanoparticles coated with divinylbenzene-crosslinked polyacrylamide. The coated magnetic nanoparticles were successful in selectively extracting Sr-90 from human urine samples, as confirmed by the liquid scintillation counting spectra. This method offers excellent repeatability for Sr-90 in urine bioassay, with a relative precision of 8 % when five urine samples collected from different donors were spiked with1.58 Bq of Sr-90 and analyzed.
引用
收藏
页码：1053 / 1057
页数：5
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