An improved procedure for the determination of 210Po by alpha spectrometry in sediments samples from Danube Delta
The aim of this work is to find the optimal procedure for 210Po leaching from sediment samples. An improved method is described, the optimization consisting in a substantial reduction of leaching time. The method was tested on IAEA standard reference materials and compared with the classical procedure. The repeatability was estimated by analyzing seven duplicates of IAEA 385 Irish Sea sediment. However, the results are satisfactory only when the method is applied for sediments with high organic content. For silicates, a mixture of three acids was used for a complete digestion.
Keywords210Po Sediments Leaching Alpha spectrometry
- 1.Goldberg EG (1963) Geochronology with 210Pb. Radioactivity dating. IAEA, Vienna, pp 121–131Google Scholar
- 12.Edgington DN, Robbins JA (1975) Determination of the activity of lead-210 in sediments and soils. In: Lake Michigan mass balance study, volume 3-Metals, conventionals, radiochemistry and biomonitoring sample analysis techniques. Available online at www.epa.gov/greatlakes/lmmb/methods. Accessed 5 June 2013