Enrichment of helium-3 {3He CAS 14762-55-1} in the water body [dissolved plus reactive particulate phase] d3He_Unfilt A generic term for the isotopic enrichment of helium-3 (3He) expressed as the delta-3He value in any unfiltered body of fresh or salt water. 2016-03-10 08:49:24.0 SDN:P01::DHE3XX01 SDN:P01::DHE3XX01 SDN:P01::DHE3XX01 1 1 2016-03-10 08:49:24.0 accepted false