Rapid Determination of Gross Alpha/Beta Activity in Water Based on Reverse Osmosis Membrane Enrichment Pretreatment

Figure 3

(a) The gross α-activity concentration of 5 water sources measured by thick source method and reverse osmosis membrane method, respectively; (b) the gross α-activity concentration of 5 water sources measured by thick source method and reverse osmosis membrane method, respectively. The gray bars indicate the relative errors of the two methods. The error bar was SD (standard deviation). The red dotted line is the identification of RMSE (root mean square error).

(a)

(b)