An automated micro-separation system for the chromatographic removal of uranium matrix for trace element analysis by ICP-OES

TALANTA

卷:189

Article

Wylie, E. Miller¹  Manard, Benjamin T.¹  Quarles, C. Derrick, Jr.²  Meyers, Lisa A.¹  Xu, Ning¹ 

[1] Los Alamos Natl Lab, POB 1663,MS G740, Los Alamos, NM 87545 USA

[2] Elemental Sci Inc, 7277 World Commun Dr, Omaha, NE 68122 USA

关键词: U3O8;    Nuclear;    UTEVA;    Elemental Scientific;    Automation;    Spectroscopy;   

DOI  :  10.1016/j.talanta.2018.06.063

来源: Elsevier

【 摘 要 】

An automated, miniaturized, off-line separation technique is presented here using an Elemental Scientific Inc. microFAST MC system with UTEVA resin to extract the uranium matrix from its trace element impurities in aqueous media. The collected fractions were analyzed for similar to 30 trace elements using inductively coupled plasma optical emission spectroscopy. Ten replicate samples were processed with a single column resulting in precision ranging from 3.3% to 6.2% relative standard deviation with regards to the trace element recoveries. Accuracy, with respect to trace element concentrations in the U3O8 Certified Reference Material 124-1, resulted in an average of 13.9% relative deviation while accuracy to the Canadian U3O8 reference material, CUP-2, resulted in an average relative deviation of 8.6%. The total separation time of this automated process was reduced to similar to 30 min per sample while employing a 0.5 mL UTEVA chromatographic resin bed and 2.5 mg of uranium.

【 授权许可】

Free