Organic analytics

Dr. Helmut Geppert

T +49 (0)355 693314Helmut.Geppert(at)b-tu.de

Investigation spectrum

The compartments soil, water and air, but also consumer goods (plastics, textiles, food, pharmaceuticals, etc.) can be examined for a variety of known (PAH's, PCB's, pesticides, hydrocarbons, CHC's, BTEX, etc.) and unknown components (testing of synthesis reactions, toxic ingredients in treated wood, etc.).The instruments are mainly used in the field of research (e.g. ZAL projects, service analytics for third-party funded projects of the BTU Cottbus, cooperation projects with other scientific institutions) and teaching. Institutions) and in the field of teaching.

Equipment

Bruker NMR Avance 400
Bruker NMR Avance 400

1. NMR

  • Bruker NMR Avance 400
  • High resolution sample head, BBI sample head
  • CP-MAS
  • Structure elucidation
  • polymers, organic synthesis products
  • organic soil matter

2. gas chromatography

  • 3 GC's (CE Instruments) with FID, NPD, ECD, FPD and PID, e.g. routine analyses, CHCs in soil and water
  • 2 GC's with quadrupole mass spectrometer (MD 800, Thermoquest) with EI+ (mass range 2-800 amu)e.g. routine analyses, PCB's in oil, PAH in soil, simple structural investigations
  • 1 GC with triple quadrupole mass spectrometer (Varian) with EI+, EI-, CI+, CI-, PCI, NCI (mass range 2-4000 amu)e.g. special structural or routine analyses
  • Sample introduction systems
    • Sampler for split/splitless - and on-column injection (liquid or dissolved samples)e.g. all compounds(PCB's, PAK's, pesticides, KW's ) which can be transferred undecomposed into the gas phase (ppb-%)
    • Sampler for headspace analysis (volatile compounds from air, water, soil, plastics etc.) e.g. BTEX in soil and water, alcohol determination in blood or wine (ppb-%)
    • Sampler Combi PAL (automated sample preparation)e.g. SPME extraction, derivatization
    • Sample introduction with thermodesorption (gaseous samples, thermal treatment of solid samples up to 350 °C)e.g. benzene in air, MAK value monitoring (ppb-ppm), direct desorption of solid samples
    • Sample feeding from stainless steel canisters (gaseous samples)e.g. C2-C12 hydrocarbons in air (ozone precursor compounds) (ppt-ppm)
CE Instruments
CE Instruments
MD 800, Thermoquest company
MD 800, Thermoquest company
Varian-GCMSMS
Varian-GCMSMS
Varian LCMSMS
Varian LCMSMS

3. liquid chromatography

  • 1 HPLC (low pressure gradient) with UV/VIS, diode array and fluorescence detector (Gynkotek), e.g. pesticides, nitroaromatics, PAHs, etc.
  • 1 HPLC (low and high pressure gradient) with triple quadrupole mass spectrometer (Varian) with ESI and APCI source, e.g. promotion of humic substances in rainwater; natural substances (tannin).
FTIR microscope
FTIR microscope

4. infrared spectroscopy

  • FTIR Thermo Nicolet 410
  • FTIR microscope Thermo Centaurµs
  • KBr, ATR (PIKE Miracle single bounce HATR and others), cuvettes
  • Identification of plastics
  • Hydrocarbon determination according to DIN 38409 H18
  • Particles, fibers, layer structure of coatings and films
Capillary electrophoresis
Capillary electrophoresis

5. capillary electrophoresis

  • Protein analysis
  • reaction mechanism and kinetics of derivatization reactions
  • organic acids

6. sample preparation

  • Soxhlet extraction (solid samples)
  • Liquid/liquid extraction (water extraction)
  • Solid phase extraction (water extraction or for sample purification)
  • Rotary evaporator
  • Filtration
  • Centrifuge
  • Mills