This International Standard specifies methods forThe determination of orthophosphate (see Clause 4); orthophosphate after solvent extraction (see Clause 5); hydrolysable phosphate plus orthophosphate (see Clause 6); total phosphorus after decomposition (see Clauses 7 and 8).The methods are applicable to all kinds of water including seawater and effluents. Phosphorus concentrations withinThe range of 0,005 mg/l to 0,8 mg/l may be determined in such samples without dilution. A solvent extraction procedure allows smaller phosphorus concentrations to be determined with a detection limit of about 0,000 5 mg/l.
EN ISO 6878:2004 history
2004EN ISO 6878:2004 Water quality - Determination of phosphorus - Ammonium molybdate spectrometric method (ISO 6878:2004)