Non-quantitative Hg cold-vapor generation can compromise the accuracy of Hg isotope analysis, and it should be monitored and optimized by performing matrix separation, adopting the design of gas–liquid separators, and tuning the sample uptake rate.
A new strategy for determining the Hg isotopes in low Hg concentration samples is proposed, utilizing the flow injection plasma electrochemical vapor generation (FI-PEVG) sampling technique coupled with MC-ICPMS.
This study developed an in situ pre-enrichment method based on solid-phase extraction technology for the efficient enrichment and isotope analysis of ultra-low concentration dissolved mercury (<1 ng L−1) in seawater.
High-precision analysis of mercury (Hg) isotope compositions is fundamental for tracing Hg cycling in the environment.
By refining analytical techniques, we achieve high precision in Hg isotope measurements of natural carbonates and present a novel application of Hg stable isotopes in coral skeletons and stalagmites to trace historical variation trends.