Chromatography of Phosphorus Oxoacids

Ohashi, Shigeru

doi:10.1016/b978-0-408-70727-5.50017-x

Cited by 1 publication

(1 citation statement)

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“…ml -') does restrict the usefulness of these methods for the separation of naturally occurring DIP, even though preconcentration is performed. An advantage of paper and thin-layer chromatography is the possibility of two-dimensional chromatography, which makes separation of complicated mixtures possible (Ohashi, 1975;Halmann, 1972). The most frequently used technique for separation' of the oxoacids of phosphorus and their anions is ion-exchange chromatography.…”

Section: Analysis and Ident$cation Of Dipmentioning

confidence: 99%

Particulate and dissolved phosphorus forms in freshwater: composition and analysis

Broberg

Persson

1988

Hydrobiologia

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In recent research, particulate and dissolved phosphorus components have been separated and characterized on the basis of their physical and chemical properties and partly by their origins.Classical operationally defined monitoring variables (dissolved reactive phosphorus, dissolved unreactive phosphorus and particulate phosphorus) are not congruent with known specific physical or chemical components of phosphorus in natural waters or with their bioavailability.Physical isolation of true particles, colloids and molecules of various sizes is possible at present although it is not recommended for routine use.Chemical characterization of particulate phosphorus is performed mainly by sediment extraction procedures (specialized for inorganic species) and -to a lesser degree -by cell extraction procedures (specialized for organic compounds). The extraction procedures are similar and physical preseparation or alternative procedures (e.g. enzymatic assays) are essential.Smaller colloids and dissolved compounds are physically separated by column chromatography and are often chemically characterized by degradation on the addition of specific enzymes.

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Section: Analysis and Ident$cation Of Dipmentioning

confidence: 99%