Phosphate phosphorusDefinition N/A Preferred Units: milligrams per litre
Scope Note:
Most labs report Phosphorus as phosphate -- sometimes abbreviated PO4-P. So a result of (say) 10 mg/L of phosphate (PO4 3-), would be reported as 3.2 mg/L PO4-P. Both the lab and the data user have to crystal clear on how the number is reported. [That calculation is as follows: atomic weight of phosphorus is 31, oxygen is 16. So PO4 is (31 + (4 x 16) = 91. The phosphorus is therefore 31/95 as a fraction of the phosphate anion: so 10 mg/L phosphate = 10 x (31/95) = 3.2 mg/L PO4-P.] This term is used for the following terms:
Phosphorus measured as phosphate
PO4-P
Approved Date
09-Sep-2013 Items having a keyword or observed-property relationship to this subject term - Advisory report on nutrient levels and related ecology of Malham Tarn
- Changes in the phosphorus content of the sediment of Esthwaite Water and water quality in response to a decreasing input of sewage-borne phosphorus
- Data from laboratory analysis at Ebble upstream site, Hampshire Avon catchment
- Data from laboratory analysis for Burracott site, Neet catchment
- Data from laboratory analysis for Ebble downstream site, Hampshire Avon catchment
- Data from laboratory analysis of water samples, Caudworthy Water at Caudworthy Ford, Tamar catchment
- Data from laboratory analysis of water samples, Sem at Cool's Cottage site, Hampshire Avon catchment
- Data from laboratory analysis of water samples, Sem at Priors Farm, Hampshire Avon catchment
- Data from laboratory analysis of water samples, Winnacott Bridge at Caudworthy Ford, Tamar catchment
- Data from laboratory analysis of water samples, Wylye at Brixton Deverill site, Hampshire Avon catchment
- Data from laboratory analysis of water samples, Wylye at Kingston Deverill site, Hampshire Avon catchment
- Whitacre-Shustoke Reservoir improvements. Water-quality aspects- a preliminary assessment
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