Based on a short review, I found SEM-EDX (particle-based) and ED-XRF, ICP-MS, ICP-OES, ICP-AES, AAS,... (bulk). What method should be preferred and why? Filter material consists of teflon-coated borosilicate filters and Nuclepore track-etched polycarbonate membranes (Whatman).
I'm interested in the following elements: Cu, Cr, V, Mn, Fe, Ni, Zn, Pb, Ca, Na, Mg, Al, As
What are the expected concentrations? At leastfor some of the elements, neutron activation will provide good results at low trace levels. ICP methods have low detection limits but need chemical treatment, so you will have to consider contaminations by the chemicals you use. EDX/XRF might not provide the detection limits you need. AAS is quite an effort for so many elements.
Hoi Jelle,
You can also try ion-chromatography. It is not that complicates. In notice that all the elements you cite are cations.
Zie ook: https://www.separations.us.tosohbioscience.com/service--support/technical-support/resource-center/principles-of-chromagraphy/ion-exchange
of
http://www.bio-rad.com/en-be/applications-technologies/cation-exchange-chromatography
and the paper in annex.
You will notice that you will have to purchase adapted eluent and column resin to separate the different cations you cited. And of course you will need a ion chromatograph and a dedicated sensor for the cation species.
Cheers,
Frank
Thanks for the quick reply!
Concentrations are typically in the ppm range for trace elements (mg kg-1) and up to g kg-1 for e.g. Fe.
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