The geochemistry laboratories are located at Schleinitzstraße 20.
The equipment enables comprehensive analyses of environmental samples and is listed below.
principle: Atomic absorption spectrometer
For the determination of: Hg (cold steam)
Measuring range: low concentration: < 30 ng Hg
high concentration: 50 - 1000 ng Hg
Detection limit: Double cuvette 0.01 ng Hg
Triple cuvette 0.005 ng Hg
Maximum sample weight: usually up to 500 mg
Analysis time per sample: ~6 min
principle: "dynamic self-combustion" and gas chromatic separation
For the determination of: C, N, S
Area of application: solids (peat, soil, sediments etc.)
Measuring range: μg/kg - %
Detection limits: 3 μg/kg C
1 μg/kg N
1 μg/kg S
principle: Atomic fluorescence spectrometer with double amalgamation
For the determination of..: Hg in aqueous solutions
Measuring range: ppt- (ng/l) to ppb- range (μg/l)
Detection limit: ~ 0.1 ng/l
principle: Freeze drying
Field of application: conservation of soil samples (also with high organic content)
Technical data (excerpt): drying capacity at p = 6.5 * 10-1mbar: approx. 3 kg ice / 24 h Storage capacity: approx. 5 kg ice
Final temperature of the condenser at 20 °C Room temperature:
under atmospheric pressure: approx. -40 °C
under vacuum: approx. -53 °C
Principle of operation: Ion chromatograph
For determining: e.g. NH3, NH4+, Cl-, and other anions in liquid samples
Application: Water analysis
Measuring range: Depending on the resolution step 0-1000 μS/cm, 0-250 μS/cm, 0-50 μS/cm
Measuring rate: 10 measurements per second
Maximum error: +/- 1 %
Functional principle: Mass spectrometer (MS) with inductively coupled plasma (ICP)
For the determination of: Trace elements in aqueous solutions
Field of application: Water analysis
Measuring range: ppb - ppm detection limit: < 1ppb depending on element
principle: Inductively coupled plasma (ICP) with optical emission spectrometer (OES)
For the determination of: mainly main elements, as well as some trace elements such as Ni, Cu, Zn, Pb
Application: main and trace elements in digestions and aqueous samples
Measuring range: ppm - ppb
principle: Thermal extraction at 1000 °C
For determination of..: I in solids
Field of application: Determination of iodine contents in soils and sediments
Measuring range: < 5 %
Detection limit: 25 ng absolute
principle: Spectrophotometer (UV/VIS)
For the determination of: Cations and anions from acidic digestion solutions and aqueous samples, especially I in solids
Application: Quantification of the iodine extracted in AOX
Area of application: separation of substances
Measuring range: ppm; ppb (with ICP-MS coupling)