Estimation of Natural Radionuclides' Concentration of the Plutonic Rocks in the Sakarya Zone, Turkey Using Multivariate Statistical Methods

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YALÇIN F., İLBEYLİ N., Demirbilek M., YALÇIN M. G., GÜNEŞ A., Kaygusuz A., ...More

SYMMETRY-BASEL, vol.12, no.6, 2020 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 12 Issue: 6
  • Publication Date: 2020
  • Doi Number: 10.3390/sym12061048
  • Journal Name: SYMMETRY-BASEL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, INSPEC, Metadex, zbMATH, Directory of Open Access Journals, Civil Engineering Abstracts
  • Keywords: radioactivity, radiological hazard parameters, multivariate statistics, data analysis, plutonic rocks, RADON EXHALATION RATE, GAMMA-RADIATION MEASUREMENTS, LIFETIME CANCER-RISK, RADIOACTIVITY LEVELS, BUILDING-MATERIALS, COMMERCIAL GRANITES, DOSE-RATES, ANTHROPOGENIC RADIONUCLIDES, SPATIAL-DISTRIBUTION, SOIL SAMPLES
  • Open Archive Collection: AVESIS Open Access Collection
  • Akdeniz University Affiliated: Yes

Abstract

The study aimed to determine the natural radioactivity levels of(226)Ra,Th-232, and(40)K by the Gamma-Ray spectrometry method, and radiological hazard parameters of the plutonic rocks in the Western and Central Sakarya Zone and to analyze the data using multivariate statistical methods. The average radiological values of samples were determined as(40)K (1295.3 Bq kg(-1)) >Th-232 (132.1 Bq kg(-1)) >Ra-226 (119.7 Bq kg(-1)). According to the skewness values of the distributions of the examined radionuclides,Ra-226 (2.1) and(232)Th (0.7) seemed to be positively right-skewed while(40)K (-0.2) had a negatively right-skewed histogram. On the other hand, the following kurtosis values were calculated for the distributions:Ra-226 (5.8 > 3),Th-232 (-0.7), and(40)K (-0.8). Kolmogorov-Smirnov and Shapiro-Wilk tests were applied to the data to test their normality. Therefore, Spearman's correlation coefficient method was performed. The radionuclides of(226)Ra and(232)Th were found to have a positive correlation with radiological hazard parameters of the samples. 2 (two)-related factors identified, and the cumulative value was calculated to be 98.7% on the basis of the Scree Plot. According to the hierarchical cluster analysis, the samples that are grouped with those from Camlik region are prominent. The average radioactivity values of Camlik, Sogukpinar, Karacabey, and Sogut (except for(232)Th) regions were detected to be higher than the world averages while the value of(40)K was also found to be higher than the average values of various countries in the world.