title: Gamma emitters in atmospheric precipitation in Krakow (Southern Poland) during the years 2005-2015.
abstract: The results of the sum of dry and wet activity deposition for naturally occurring7Be,210Pb,40K,22Na and anthropogenic137Cs radionuclides in Krakow (Southern Poland) for the samples collected over 10 years (from August 2005 to July 2015) are presented and discussed. The radionuclides were determined using low background gamma spectrometry with HPGe detectors. Additionally, in this paper there are shown the results of activity concentrations in water from air precipitation for7Be,210Pb,22Na,40K and137Cs radioisotopes from the period of 7 years (from August 2008 to July 2015). For all these series the statistical analysis including Spearman correlations, effects of seasonal variation and multiple regression models were conducted. After excluding two months from 2011 affected by the Fukushima accident, high Spearman correlation factors (R > 0.5) for activity deposition were noticed for the pair of the cosmogenic radionuclides7Be and22Na (R = 0.508) and between210Pb and7Be (R = 0.570). High correlation was noted between activity deposition and amount of precipitation for7Be (R = 0.677). The seasonal correlations between7Be-22Na,40K-137Cs,210Pb-137Cs and7Be-210Pb were investigated and the highest correlation coefficient R = 0.731 for the40K-137Cs pair was in the spring season. High correlations were observed also between210Pb and7Be for autumn (R = 0.594),40K-137Cs in summer (R = 0.582),7Be-22Na in spring (R = 0.635) and210Pb-137Cs in autumn (R = 0.672). The multiple regression approach showed the interesting difference in scavenging mechanisms of cosmogenic and terrestrial radionuclides. According to that model, the deposition of cosmogenic nuclides was noticeably related to the amount of precipitation, while the deposition of terrestrial radionuclides did not show such dependence.
authors.affiliation: The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences (IFJ PAN), Radzikowskiego 152, 31-342 Krakow, Poland. Electronic address: jerzy.mietelski@ifj.edu.pl.
authors.forename: Jerzy W
authors.initials: JW
authors.lastname: Mietelski
authors.affiliation: The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences (IFJ PAN), Radzikowskiego 152, 31-342 Krakow, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Nalichowska
authors.affiliation: The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences (IFJ PAN), Radzikowskiego 152, 31-342 Krakow, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Tomankiewicz
authors.affiliation: The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences (IFJ PAN), Radzikowskiego 152, 31-342 Krakow, Poland.
authors.forename: Kamil
authors.initials: K
authors.lastname: Brudecki
authors.affiliation: Faculty of Physics and Applied Computer Sciences, AGH University of Science and Technology. Al. Mickiewicza 30, 30-059 Krakow, Poland.
authors.forename: Paweł
authors.initials: P
authors.lastname: Janowski
authors.affiliation: The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences (IFJ PAN), Radzikowskiego 152, 31-342 Krakow, Poland.
authors.forename: Renata
authors.initials: R
authors.lastname: Kierepko
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D000398:Air Pollution, Radioactive / Q000706:statistics & numerical data*; D001272:Atmosphere / Q000737:chemistry*; D011044:Poland; D011834:Radiation Monitoring; D012621:Seasons; D013051:Spectrometry, Gamma
chemical_list: D000396:Air Pollutants, Radioactive
keywords: Cosmogenic radionuclides; Gamma emitters; Radioactivity of air; Radiocesium; Radionuclides' washout; Resuspension; Wet and dry precipitation