Geochemistry
Geochemical analyses enable a wide range of questions to be addressed. Rocks, for example, can be clearly assigned on the basis of their geochemistry and their formation can be understood. For raw material exploration, geochemical anomalies in soils or stream sediments are specifically searched for. For an economic evaluation, the content of the respective valuable elements must be determined in numerous samples. Concepts for the remediation of contaminated sites are based on an areal determination of the concentration of a contaminant element both as a whole and of the readily available fraction.
We analyse both major and trace element contents in solid samples (rock, ore, soil, materials, mineral or metallic waste) as a whole or after partial leaching. Alternatively, we determine geochemistry directly on powdered samples or on fused tablets using X-ray fluorescence analysis (XRF) or after acid digestion using ICP-MS/-OES. We can also analyse the Fe(II) content of your sample by titration. Carbon and sulphur content are also determined on the powder using an element analyser.
We will be pleased to advise you in order to determine the appropriate analyses for your problem.
Analyses
Method |
Element spectrum |
Device |
X-ray fluorescence (XRF), angle dispersive, melting tablet |
main elements (Na, K, Ca, Mg, Al, Si, Fe, Mn, Ti, P), loss on ignition |
S4 Explorer, Bruker AXS |
X-ray fluorescence (XRF), energy dispersive Melting tablet/powder bulk sample |
main elements (Na, K, Ca, Mg, Al, Si, Fe, Mn, Ti, P) div. trace elements |
Epsilon 5, PANanlytical; Epsilon 4, PANanlytical; EDX 8000; Shimadzu |
Carbon-sulfur analyzer (CSA) |
TC, TOC, TS |
CS-2000, ELTRA |
Titration (Manganometry) |
Fe(II) |
Dosimat 715, Metrohm |
div. digestions |
Major and trace elements |
ICP-MS (X-Series 2, Thermo Fisher); |