Norm

NEN-EN 1189:1994 Ontw. en

Water - Bepaling van het gehalte aan fosfor - Spectrometrische methode met ammoniummolybdaat

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Over deze norm

Status Ingetrokken
Aantal pagina's 29
Commissie Anorganische parameters
Gepubliceerd op 01-01-1994
Taal Engels
This standard deals with the determination of different forms of phosphorus compounds present in ground, surface and waste waters in various concentrations in the dissolved and undissolved state. This standard specifies methods for the determination of orthophosphate (see section one); orthophosphate after solvent extraction (see section two); hydrolysable phosphate plus orthophosphate (see section three); total soluble phosphorus and total phosphorus after decomposition (see sections four and five). The methods are applicable to all kinds of water including seawater and effluents. Phosphorus contents within the range of 0,005 to 0,8 mg P per litre 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 0,0005 mg P per litre. See annex B for some known interferences. There may be others and it is necessary to verify whether any such exist and take action to remove them.

Details

ICS-code 13.060.50
Nederlandse titel Water - Bepaling van het gehalte aan fosfor - Spectrometrische methode met ammoniummolybdaat
Engelse titel Water quality - Determination of phosphorous - Ammonium molybdate spectrometric method
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