A novel approach to sample preparation for the analysis of Sb isotope ratios in natural water by MC-ICP-MS

Abstract

Aquatic systems play a key role in the global antimony (Sb) cycle, but studies on the isotopic ratio of Sb in freshwater are very rare due to the low Sb...

Atomic spectrometry update – a review of advances in environmental analysis

“…A procedure for the isotopic analysis of Sb in water samples at low concentration (<1 μg L −1 ) involved 86 the addition of 200 μL of a 25% v/v BrCl solution to a 200 mL sample to digest all the DOM in the sample. A mixture of KI, hydroxylamine hydrochloride and ascorbic acid was added to this digest to remove excess BrCl and to convert any Sb V present to Sb III .…”

Rapid determination of Hg isotopes in low concentration water samples by flow injection-plasma electrochemical vapor generation

“…The pre-concentration method is an effective method to solve the problem of insufficient sample concentration for accurate isotope measurements, but it involves complex operations. 30,31,[39][40][41] The FI technique is widely used for elemental analysis due to its advantages of low sample consumption and short analysis time. 31,35 Therefore, we assessed the feasibility of combining FI with PEVG as a microsampling technique to rapidly and accurately analyse Hg isotopes in samples with low Hg concentration.…”

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

“…Hence, the Sb system could be used to trace sources of pollution, in particular in the aquatic environment. Xia et al 170 addressed the preparation of freshwater for Sb isotopic analysis, which has been difficult due to the low concentrations involved. Their study designed a novel preconcentration and purification system in which water samples were processed using KI-ascorbic acid Sb reduction prior to a vacuum-driven thiol resin ion exchange system.…”