Determination of natural radionuclides and radioactive minerals in urban coastal zone of South India using Geospatial approach

被引：5

作者：

Bharath, K. Manikanda ^{[1
,2
]}

Natesan, Usha ^{[2
]}

Chandrasekaran, S. ^{[3
]}

Srinivasalu, S. ^{[1
]}

机构：

[1] Anna Univ, Inst Ocean Management, Chennai 600025, Tamil Nadu, India

[2] Natl Inst Tech TeachersTraining Sr Res NITTTR, Chennai 600113, Tamil Nadu, India

[3] Homi Bhabha Natl Inst, Indira Gandhi Ctr Atom Res, Radiol Safety Div, Hlth Safety & Environm Grp, Kalpakkam 603102, Tamil Nadu, India

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2022年 / 331卷 / 05期

关键词：

Natural radionuclides; Radiological risk; Radioactive minerals; Geospatial variation; Coastal ecosystems; BEACH SAND; RADIATION; SEDIMENTS; TAMILNADU; ISLAND; AREAS; RISK;

D O I：

10.1007/s10967-022-08284-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The present study aims to investigate the geospatial variations in natural radioactivity, radiological risks, and the heavy mineral content along the urban costal zone of Chennai, South India. During the period of March 2019, ambient gamma radioactivity was measured proposed site using a Ludlum Model 19 micro-R survey meter and gamma-ray spectrometry using a Gamma-ray spectrometer with NaI (Tl) detector. The ambient gamma radiation levels at 13 urban beaches in Chennai megacity along the Bay of Bengal range from 18 to 965 nGy/h, with an average of 148 nGy/h. The natural radionuclides contributed to the effective dose in the order of K-40 > Th-232 > U-238. The radionuclide activity concentration values confirmed that the sediments belong to the fluvial sources of beach placer or heavy minerals in the study area.

引用

页码：2005 / 2018

页数：14

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