Automated method for concurrent determination of thorium (²³⁰Th, ²³²Th) and uranium (²³⁴U, ²³⁵U, ²³⁸U) isotopes in water matrices with ICP-MS/MS

Abstract

High efficient analysis of Th and U isotopes were important technique issues encountered in the fields such as environment monitoring and nuclear emergency responses. Here we proposed a novel automated...

Atomic spectrometry update – a review of advances in environmental analysis

“…The absolute LOD of 10 ag was sufficient for monitoring this radioisotope in seawater and could result in a rapid increase in the use of 227 Ac as a marine tracer. An automated SPE column method with UTEVA® resin was used 101 to extract Th ( 230 Th, 232 Th) and U ( 234 U, 235 U, 238 U) from 20 mL of sea and river waters prior to elution with 0.01 M HNO 3 –0.01 M HF and quantification by ICP-MS/MS. Results were not significantly different from the certificate values for the NRCC CRMs CASS-6 (near shore seawater), NASS-7 (seawater) and SLRS-6 (river water) and the IAEA CRM IAEA-443 (Irish Sea water).…”

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

“…Ni et al 198 devised a method to concurrently measure Th and U isotopes from water samples. An automated platform was developed to pass analyte through a UTEVE resin and deliver an ICP-MS-compatible final eluent.…”

Inductively Coupled Plasma-Tandem Mass Spectrometry (ICP-MS/MS) and Its Applications

“…Determination of elemental as well as isotopic concentrations of uranium and thorium is important in monitoring the quality of drinking water, and other environmental issues such as nuclear emergency responses 45 . Ni et al 46 determined Th ( 230 Th, 232 Th) and U ( 234 U, 235 U, 238 U) isotopes in small volume (20 mL) of water matrices using ICP-MS/MS. Detection limits going down to pg/ml -fg/ml levels for these elements.…”