title: Analysis of radioactive particles from the Kola Bay area.
abstract: Two types of radioactive particle were identified in marine sediment and lichen samples collected from the Kola Bay, NW Russia. The particles were identified by means of gamma-ray spectrometry and autoradiography, separated and subjected to various analysis techniques. Several complementary techniques are needed to characterise particle properties thoroughly. 137Cs was present in the sediment matrix in large (approximately 100 microns) greenish particles that were most probably pieces of paint. Although their element composition was heterogeneous, 137Cs was found to be evenly distributed. 60Co in the lichen matrix was present in small (approximately 1 micron) particles. No U or transuranium elements were detected in either type of particle.
authors.affiliation: STUK-Radiation and Nuclear Safety Authority, P.O. Box 14, 00881 Helsinki, Finland. roy.pollanen@stuk.fi
authors.forename: R
authors.initials: R
authors.lastname: Pöllänen
authors.forename: S
authors.initials: S
authors.lastname: Klemola
authors.forename: T K
authors.initials: TK
authors.lastname: Ikäheimonen
authors.forename: K
authors.initials: K
authors.lastname: Rissanen
authors.forename: J
authors.initials: J
authors.lastname: Juhanoja
authors.forename: S
authors.initials: S
authors.lastname: Paavolainen
authors.forename: J
authors.initials: J
authors.lastname: Likonen
mesh_terms: D001345:Autoradiography; D002588:Cesium Radioisotopes / Q000032:analysis*; D003037:Cobalt Radioisotopes / Q000032:analysis*; D056890:Eukaryota / Q000737:chemistry*; D005387:Finland; D019015:Geologic Sediments; D008011:Lichens / Q000737:chemistry*; D008670:Metals / Q000032:analysis; D008855:Microscopy, Electron, Scanning; D011848:Radioactive Pollutants / Q000032:analysis*; D013051:Spectrometry, Gamma
chemical_list: D002588:Cesium Radioisotopes; D003037:Cobalt Radioisotopes; D008670:Metals; D011848:Radioactive Pollutants