Concept

pH (NBS scale)

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URI	http://vocab.nerc.ac.uk/collection/S06/current/S0600280/2/
Within Vocab	BODC parameter semantic model parameter entity names
Alternative Labels
Definition	A measure of acidity based on the National Bureau of Standards' operational pH scale which denotes the negative of the common logarithm of the free proton (hydrogen ion) activity, -log ag.
Date	2021-11-01T11:53:
Identifier	SDN:S06::S0600280
Note	accepted
Is Version Of	S0600280
Previous Version	1
version	2
	P01 BODC Parameter Usage Vocabulary - (10) [+]
	`P01:PHNBSSPW`	pH (NBS scale) of the sediment pore water [dissolved plus reactive particulate phase]
	`P01:PHXXZZYY`	pH (NBS scale) of the water body by Gran titration and Mackereth et al. (1978) freshwater analysis method and standardisation to NBS scale
	`P01:NEWCXX07`	pH (NBS scale) of the wet sediment
	`P01:PHNSECAL`	pH (NBS scale) standard deviation {pH[NBS]} of the experiment water sample by computation
	`P01:PHNBSDWC`	pH (NBS scale) standard deviation {pH[NBS]} of the water body by computation
	`P01:PHNBECAL`	pH (NBS scale) {pH[NBS]} of the experiment water sample by computation
	`P01:PHNBWB01`	pH (NBS scale) {pH[NBS]} of the water body
	`P01:PHNBWCAL`	pH (NBS scale) {pH[NBS]} of the water body by computation
	`P01:PHNBISGE`	pH (NBS scale) {pH[NBS]} of the water body by in-situ glass electrode
	`P01:PHNBPHEL`	pH (NBS scale) {pH[NBS]} of the water body by pH electrode

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