Concept

Activity of thorium-230 {230Th CAS 14269-63-7} per unit mass of the water body [dissolved plus reactive particulate <0.4/0.45um phase] by filtration, acidification and corrected for the dissolution of lithogenic minerals

URI	http://vocab.nerc.ac.uk/collection/P01/current/TH230X04/
Within Vocab	BODC Parameter Usage Vocabulary
Alternative Labels	Diss_230Thxs<0.4/0.45um_/kg
Definition	The dissolved excess Th-230 concentration refers to the measured dissolved Th-230 corrected for a contribution of Th-230 due to the partial dissolution of uranium-bearing minerals, or lithogenics. Thereby the dissolved excess represents solely the fraction of Th-230 produced in the water by decay of dissolved uranium-234. The lithogenic Th-230 has been estimated using measuring dissolved Th-232 and a lithogenic Th-230/Th-232 ratio of 4.0e-6 (atom ratio) as determined by Roy-Barman et al. (2002) and a conversion factor to convert picomoles to micro-Becquerels.
Date	2016-10-17T16:17:37
Identifier	SDN:P01::TH230X04
Note	accepted
Has Current Version	1
version	1
Broader	`S06:S0600043`	Activity	Mapping: 871315
	`P02:WRAD`	Radioactivity in water bodies	Mapping: 871217
	`S27:CS002775`	thorium-230	Mapping: 871319
	`S26:MAT00563`	water body [dissolved plus reactive particulate <0.4/0.45um phase]	Mapping: 871317
Related	`S05:S050011`	corrected for the dissolution of lithogenic minerals	Mapping: 871313
	`S03:S03100`	filtration, acidification	Mapping: 871311
	`P06:UWBQ`	Microbecquerels per kilogram	Mapping: 871219
	`S02:S057`	per unit mass of the	Mapping: 871309

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