Kinetics of trace element complexation with suspended matter and with filterable ligands in freshwater

Article Abstract:

Relatively specific natural ligands in low concentrations appear to be an important controlling mechanism in trace element speciation at the water surface. A study of the trace elements Fe, Zn, Mn, Co, Ag, Cd and Cs within rich organic river water from the Vienne River in France was conducted to determine the elements' binding properties and the kinetics of the speciation occurring in the filterable phase. River water samples were taken in early summer 1995 and in winter 1995.

Bulk solids, Ligands, Ligands (Chemistry), Trace analysis

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Hepatoxin production kinetics of the cyanobacterium Microcystis aeruginosa PCC 7820, as determined by HPLC-mass spectrometry and protein phosphatase bioassay

Article Abstract:

Researchers from France investigated the hepatotoxin production kinetics of Microcystis aeruginosa using high performance liquid microchromatography (micro HPLC) and protein phosphatase 2A inhibition assay.

High performance liquid chromatography, Microbiological assay

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An environmentally friendly process for the regeneration of used oils

Article Abstract:

Researchers from Portugal and France described a filtration process assisted by pressurized CO2 to regenerate used motor oils .

Portugal, Lubricating oils and greases, Petroleum Lubricating Oil and Grease Manufacturing, Lube Oils, Carbon dioxide, Waste management, Lubricants industry, Lubricating oils

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