Analyses

GeoLab

Inorganic geochemistry lab

We have a number of analytical techniques available:

  • ICP-MS (Inductively Coupled Plasma Mass Spectrometry)
  • GC-MS (Gas Chromatography Mass Spectrometry)
  • EA-IRMS (Elemental Analyzer Isotope Ratio Mass Spectrometry)
  • ICP-AES (Inductively Coupled Plasma Atomic Emission Spectrometry
  • AAS (Atomic Absorption Spectroscopy)
  • TGA (thermogravimetric analysis)
  • NanoSIMS

Sample preparation

  • Moisture/ash content or weight-loss by TGA
  • Preparation SEM / microprobe: thin and polished sections
  • Preparation XRF: pressed powder pellets and pearls
  • Freeze dry facilities
  • Soxhlett extraction, Flash column chromatography
  • Pyrolysis

Inorganic analysis

  • Ion Chromatography (IC): measurement of anions (phosphate, nitrate, nitrite, sulfate, bromide, fluoride, chloride) in water
  • Auto Analyzer (AA): measurement ammonium, nitrate, nitrite, phosphate, silica, bisulfide, iron (Fe(II) using an automated spectroscopic method
  • Sulfide, SxOy, thiosulphate, ferro, ferri by polarography
  • Carbonate, (dissolved/total) inorganic carbon and alkalinity
  • Dissolved/total organic carbon (DOC, TOC)
  • Acidity (pH), redox potential (Eh), conductivity (Ec)
  • Elements and trace elements using XRF, ICP-MS, ICP-OES
  • Particle size (Malvern)

Organic analysis

  • Elemental analyzer: measurement of Organic element analysis (C, H, O, Cl) by MS
  • Total/organic C, N and S by Combustion/Infrared Detection
  • Fatty acids by anion chromatography (IC)
  • Biomarkers by GC-MS (SIM mode)

Isotope analysis

  • Compound specific carbon and hydrogen Stable Isotope Analysis by GC-IRMS
  • Stable Isotopes of S, C, N, O, Cl in various matrices by IRMS and EA-IRMS
  • Stable isotopes in gases by Dual-Inlet-IRMS

(Semi)quantitative surface analysis

  • X-ray Diffraction (XRD)
  • m-X-ray Fluorescence Spectroscopy (m-XRF)
  • Laser Ablation Inductive Coupled Plasma Mass Spectrometry (LA-ICP-MS)
  • Microprobe
  • NanoSIMS