A new method for simultaneous analysis of nickel, copper and zinc isotopes in seawater

Takano and co-workers (2017, see reference below) have developed a new method to determine nickel (Ni), copper (Cu) and zinc (Zn) isotopes in seawater. This method is very simple and rapid only using single chelating extraction and single anion exchange. First, target metals are extracted from seawater by NOBIAS Chelate PA-1 resin. Then, target metals are purified by anion exchange. Finally, isotope ratios are measured by MC-ICPMS. The analyses of GEOTRACES reference samples showed this method is precise and accurate. Vertical profiles of δ60Ni, δ65Cu, and δ66Zn in the South Pacific Ocean were revealed using this method.

This method is expected to accelerate isotopic research and contribute to our understanding of biogeochemical cycling in the ocean.

17 Takano l

Figure: A schematic diagram of the procedure for isotopic analysis of dissolved Ni, Cu, and Zn in seawater (upper panel). Depth profiles of dissolved δ60Ni, δ65Cu, and δ66Zn at GR15 station (30.00°S, 170.00°W) in the subtropical South Pacific Ocean. The error bars represent 2 standard errors for the MC-ICPMS measurement (lower panel). Click here to view the figure larger.

Reference:

Takano, S., Tanimizu, M., Hirata, T., Shin, K.-C., Fukami, Y., Suzuki, K., & Sohrin, Y. (2017). A simple and rapid method for isotopic analysis of nickel, copper, and zinc in seawater using chelating extraction and anion exchange. Analytica Chimica Acta, 967, 1–11. DOI: 10.1016/j.aca.2017.03.010

 

Latest highlights

Science Highlights

Quantifying the weathered fluxes to the ocean is far from over: the overlooked role of rock coast erosion

This study reveals that cliff derived sediment supply is only three times less than the solid discharge of rivers for Europe.

21.01.2022

Science Highlights

Contrasting distributions of dissolved manganese, nickel, cadmium and zinc in the Mediterranean Sea

Extensive trace metal clean sampling during the Dutch GEOTRACES cruise in the Mediterranean Sea allowed Middag and his colleagues to establish the basin scale distribution of these trace metals.

19.01.2022

Science Highlights

Specific features characterize the dissolved iron distribution in the North Western Indian Ocean

Venkatesh Chinni and Sunil Kumar Singh propose dissolved iron profiles along two meridional transects realized during spring and fall seasons between the Arabian Sea and the sub-tropical western Indian Ocean…

07.01.2022

Science Highlights

Anthropogenic aerosol has become a dominant source of zinc in the deep water of the Northern South China Sea

Liao and colleagues determined zinc concentrations and isotope compositions in sinking particles collected in the Northern South China Sea…

24.11.2021

Rechercher