title: On the determination of 99Tc in environmental waters.
abstract: In this paper we propose a search for 99Tc in flocs from water treatment plants. We show that preconcentration of 99Tc from environmental waters is a very advantageous method because of the high volumes involved. A radiochemical method is adapted in these kinds of samples, and 99Tc is identified in them by a previously published method. A typical value found is 0.56 +/- 0.26 mBq/g, where 1 g dry floc should be related to many liters of water.
mesh_terms: D008722:Methods; D013030:Spain; D013667:Technetium / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D014873:Water Pollutants; D014875:Water Pollutants, Radioactive; D013667:Technetium