Dissolved Inorganic Forms of Phosphorus

Phosphate, POl, is the fully dissociated anion of triprotic phosphoric acid, H3PO4  

Another important class of inorganic P04 compounds are the condensed or polyphosphates. In these compounds, two or more phosphate groups bond together via P—O—P bonds to form chains or in some cases cyclic compounds. Although polyphosphates generally account for only a small portion of the total P present in natural waters, they are extremely reactive compounds and are routinely 

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