Functional principle: Hg thermal desorption
For the determination of: Hg
The self-built apparatus consists of a sample vessel located in an electric furnace which is directly connected to a heated quartz cell. The pyrolysis unit with the measuring cell is located in the detection unit of an atomic absorption spectrometer (Perkin Elmer AAS 3030). All released Hg compounds were converted to Hg0 by thermal reduction by passing them through a heated quartz glass tube (800 °C) and detected by flameless atomic absorption spectroscopy using a continuous detection mode with D2 background compensation.
Distillation system for the preparation of water samples for methylmercury
Functional principle: Analysis of methylmercury by cold vapour atomic fluorescence detection
For the determination of: Monomethyl and dimethyl mercury in treated water samples (according to EPA method 1630), sediment/soil samples or biological samples.
This system consists of the Model III, the trap desorption module and the GC and pyrolysis module for automatic trap analysis as well as the manual methyl-Hg purge and trap module.
Left: GC and pyrolysis module for automated trap analysis
Top right: Trap desorption module
Bottom right: Atomic fluorescence detection
Functional principle: Infrared absorption spectroscopy (IR)
For the determination of: qualitative information about solid samples
Functional principle: TD-AAS (Thermal Decomposition - Atomic Absorption Spectroscopy)
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
TOC analyser (right, TOC-L) with TN extension (top, TNM-L) and the autosampler (left), which is used in the geochemical laboratory (Shimadzu).
For the determination of: Total organic carbon (cold steam)
Triple quadrupole ICP-MS is a type of tandem mass spectrometer (MS/MS) for elemental analysis. The ICP-QQQ uses an additional quadrupole mass filter (Q1) in front of the collision/reaction cell (CRC) so that spectral interferences with reactive cell gases and in helium (He) collision mode can be resolved. To achieve high ion transfer at a mass resolution of one unit (1 u), both quadrupoles of an ICP-QQQ must be operated under high vacuum.
Functional principle: Mass spectrometer (MS) with inductively coupled plasma (ICP)
For the determination of: Trace elements in aqueous solutions
Area of application: Water analysis
Measuring range: ppb - ppm
Detection limit: < 1ppb depending on element
The SICCO glove boxes enable safe working with sensitive mixtures of substances in an isolated atmosphere. The gassing connections on the work area and the airlock enable work to be carried out in an atmosphere overlaid with nitrogen or natural gas.