Mobile fraction

Fine dust particles can penetrate deep into the lungs. There, the soluble components in particular pose an increased risk to human health. In the case of suspended material in rivers, it is of interest which elements can be mobilized, e.g. by changing the water composition (freshwater/saltwater; tributaries/tributaries).

We determine the mobile fractions in your particles by leaching with appropriate solvents (water, salt solution, diluted acids, etc.). These are then analysed for the desired elements using our wet chemical methods.

We would be pleased to inform you about our possibilities.



Element spectrum /
Measuring range



Multi-element methods


main elements (Na, K, Ca, Mg)

div. trace elements (e.g. Al, Au, Ag, As, B, Be, Cd, Co, Cr, Cu, Fe, Li, Mn, Mo, Pb, P, Rb, Zn, U)


ng/L to mg/L, ppt to ppm (depending on matrix/element)

X-Series 2,
Thermo Fisher



Major elements (Na, K, Ca, Mg)

Selected trace elements (e.g. Ba, Fe, Mn, S, Si, Sr)

also suitable for salt-heavy samples

µg /L to mg/L, ppb to ppm (depending on matrix/element)

Varian 715ES

Single element methods

AAS (flame)

Single elements

especially Na, K, Ca, Mg

mg/L, ppm - range

AAnalyst 200,
Perkin Elmer

AAS (graphite furnace)

Single elements

e.g. Pb, Cd, Mn, As, Se

µg/L, ppm - range

AAnalyst 600, Perkin Elmer

AAS (hydride, FIAS)

Se, As

µg/L, ppm - range

FIMS 400, coupled with AAnalyst 200, Perkin Elmer


Ion chromatography (IC)

F, Cl, Br, NO3-, PO43-, SO42-
>1 mg/L, ppm

Dionex, ICS-1000; separation column IonPac As14 Supressor ERS 500

Eluent NaHCO3/Na(CO3)2



Phosphate (DIN En ISO 6878)
>0.1 mg/L, ppm

Chromate (US EPA et al. 1992) >0.1 mg/L, ppm

Lamda2, Perkin Elmer