Enrichment with respect to the VSMOW-SLAP scale standard deviation of oxygen-18 in water molecules {18O in H2O CAS 14797-71-8} {delta(18)O} in the water body by equilibration with and cryogenic trapping of CO2 and mass spectrometry Enrich_180_WC_SD The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement. 2018-10-15 17:05:31.0 SDN:P01::D18OWCXY SDN:P01::D18OWCXY SDN:P01::D18OWCXY 3 3 2018-10-15 17:05:31.0 accepted false