Concentration standard deviation of zinc {Zn CAS 7440-66-6} per unit volume of the water body [dissolved plus reactive particulate <0.2um phase] by filtration, acidification and flow-injection fluorometry Conc_DissZn<0.2_FL_SD The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement. 2019-07-16 18:36:02.0 SDN:P01::ZN02SDF1 SDN:P01::ZN02SDF1 SDN:P01::ZN02SDF1 1 1 2019-07-16 18:36:02.0 accepted false