{"title":"Integrated Assessment of Natural Radioactivity, Microbial Load, and Soil pH in Rocks from Perumbakkam Hills, Tamil Nadu","authors":"A. Gayathri, S. Murugesan","doi":"10.1134/S1066362225040186","DOIUrl":null,"url":null,"abstract":"<p>The correlation between the natural radioactivity, pH, and microbial load in rock samples collected in Perumbakkam, a suburb of Chennai, Tamil Nadu, India, was studied. Gamma spectrometry was employed to quantify the concentrations of radionuclides (<sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K), and associated radiological risk was appraised through indices such as Ra<sub>eq</sub>, AEDE, and hazard indices. The concentration of microbes was evaluated by means of the pour plate technique, and pH of an aqueous suspension was determined. Pearson correlation coefficients and Thompson-style plots were then used to explain the relationships between the radiological, chemical, and biological parameters. The results show a strong association of the radiological variables and distributed, locally specific impact with the pH and microbial activity. Site W3 had highly increased radiology levels, showing possible environmental and farming issues. The paper highlights the need for an evaluative combination of sustainable land use and radiology safety.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"67 4","pages":"561 - 574"},"PeriodicalIF":1.0000,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1066362225040186","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
The correlation between the natural radioactivity, pH, and microbial load in rock samples collected in Perumbakkam, a suburb of Chennai, Tamil Nadu, India, was studied. Gamma spectrometry was employed to quantify the concentrations of radionuclides (238U, 232Th, and 40K), and associated radiological risk was appraised through indices such as Raeq, AEDE, and hazard indices. The concentration of microbes was evaluated by means of the pour plate technique, and pH of an aqueous suspension was determined. Pearson correlation coefficients and Thompson-style plots were then used to explain the relationships between the radiological, chemical, and biological parameters. The results show a strong association of the radiological variables and distributed, locally specific impact with the pH and microbial activity. Site W3 had highly increased radiology levels, showing possible environmental and farming issues. The paper highlights the need for an evaluative combination of sustainable land use and radiology safety.
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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