Water quality. Determination of phosphorus. Ammonium molybdate spectrometric method
Water quality. Determination of phosphorus. Ammonium molybdate spectrometric method
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1 Scope This International Standard specifies methods for the 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 within the 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.
Другие стандарты BS