The digestion of sulphide ores for analysis by AAS ,ICP or ICP-MS creates two potential problems. 1. Sulphide ores can contain silicates which are difficult to digest by aqua regia and require use of HF which requires special handling and safety...
History of the AAS In 1940 Alan Walsh was a young physicist working at the British Non Ferrous Metals Laboratories during World War II. His work included determination of metal composition from the debris of enemy bombers. He developed a number of methods for rapid...
For analytical spectroscopy, there are two main categories of instruments – based on either atomic absorption or atomic emission. An example of an instrument using atomic emission is an Inductively Coupled Plasma (ICP) Spectrometer, whilst an example of one...
The Alec range of equipment can be either powered by on board lithium battery or cabled power. The battery option means that difficult measuring locations such as tidal flow past reef atolls can be measured by merely anchoring the instrument against the coral. Most...
Zeta potential indicates the stability of a colloidal dispersion. A colloid is a particle, 10-8 to 10-6m in size which when mixed in a dispersing medium is termed a colloidal dispersion. Aerosols (solid or liquid colloids) in a gas (dispersing medium), emulsions...
Various Microwave Digestion Vessels have a history of accumulating volatile metals on the surface of the vessel with repeated microwave digestions. Quartz lined vessels are one such surface that needs special preparation to try and remove such accumulations. A special...
A typical spectrometer will process wavelength spectra to provide some measure of the analytical makeup of a sample. Within that spectrometer will be some separating device such as a monochromator or polychromator to measure the strength of the wavelength of...
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