On the optimal use of the seaFAST system

Do you wish to improve your recoveries, blanks or any other parameter of your seawater preconcentration system (seaFAST)? Or are you simply curious about it? Wuttig and co-workers (2019, see reference below) propose a critical evaluation of this system’s capabilities. They perform an impressive list of tests including system conditioning, improving blank levels, finding the optimal pH of the buffer, improving preconcentration factors for different sample matrices, estimating memory effects, the initial sample salinity and UV oxidation effects on trace element concentrations. These tests considered an array of trace elements (cadmium, cobalt, copper, iron, gallium, manganese, nickel, lead, titanium and zinc) using SF-ICP-MS with data validation for some of these trace elements by flow injection analysis (iron, manganese) and/or GEOTRACES (n=42 for GSP and GSC) reference samples. They eventually make a long and useful list of recommendations for an optimal use of the system.

19 Wuttig

Figure: During this work, a commercially available seaFAST preconcentration system combined with sector-field inductively coupled plasma mass spectrometry (SF-ICP-MS) was utilised to measure six reference seawaters (SAFe S, D1 and D2; GEOTRACES GD, GSC and GSP) 3-42 times each. In this figure, our measured values were compared to the consensus values for copper (Cu), iron (Fe), manganese (Mn) and Titanium (Ti). Titanium is a novel element for this system with limited consensus values available and was compared to values determined with voltammetry by Croot, 2011. Errors are presented as 1 standard deviation (σ) for both consensus and the measured values. Note different scales for Ti.


Wuttig, K., Townsend, A. T., van der Merwe, P., Gault-Ringold, M., Holmes, T., Schallenberg, C., Latour, P., Tonnard, M., Rijkenberg, M. J.A., Lannuzel, D., Bowie, A. R. (2019). Critical evaluation of a seaFAST system for the analysis of trace metals in marine samples. Talanta, 197, 653–668. DOI: http://doi.org/10.1016/J.TALANTA.2019.01.047

Croot, P.L., Rapid determination of picomolar titanium in seawater with catalytic cathodic stripping voltammetry, Anal Chem 83(16) (2011) 6395-400.

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.


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.


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…


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…