"2" . "Uptake rate (hourly) of phosphate {PO43- CAS 14265-44-2} per unit time per unit volume of the water body [particulate >GF/F phase] by isotope-labelled tracer addition, azide poisoning, incubation at unspecified light level, filtration and counting residue"@en . "NPUp_azide_>GF/F" . "NPUPRPP1" . . "accepted" . . "26-AUG-15" . "NPUPRPP1" . "NPUPRPP1" . "2" . "Measurements made by radiotracer doped azide poisoned control incubation followed by counting particulates collected on a GF/F filter. Rate normalised by dividing the total uptake by the incubation duration in hours." .