title: Development of a continuous monitor for 226Ra in water.
abstract: Continuous 226Ra in water monitoring has wide application in uranium mining and milling areas, particularly since present practice is to use grab sampling. In this work, a continuous monitor based on 222Rn de-emanation and alpha scintillation counting is developed and tested. The critical parameters associated with the method are identified, and optimum operating conditions determined. For the laboratory scale proto-type constructed, the lower limit of detection is 0.5 pCi Ral-1 at an overall sensitivity of 2 counts per hr per pCi Ra per l. and a response time fo about 2 hr.
mesh_terms: D008906:Mining; D011834:Radiation Monitoring / Q000295:instrumentation*; D011883:Radium / Q000032:analysis*; D014501:Uranium; D014878:Water Pollution, Radioactive / Q000032:analysis*
chemical_list: D014501:Uranium; D011883:Radium