235U, 238U, 232Th, 40K and 137Cs activity concentrations in marine sediments along the northern coast of Oman Sea using high-resolution gamma-ray spectrometry

被引：57

作者：

Zare, Mohammad Reza ^{[1
]}

Mostajaboddavati, Mojtaba ^{[1
]}

Kamali, Mahdi ^{[2
]}

Abdi, Mohammad Reza ^{[1
]}

Mortazavi, Mohammad Seddigh ^{[3
]}

机构：

[1] Univ Isfahan, Dept Phys, Fac Sci, Esfahan 8174673441, Iran

[2] Univ Isfahan, Chem Proc Res Dept, Engn Res Ctr, Esfahan 8174673441, Iran

[3] Persian Gulf & Oman Sea Ecol Res Inst, Bandar Abbas, Hormozgan, Iran

来源：

MARINE POLLUTION BULLETIN | 2012年 / 64卷 / 09期

关键词：

Activity concentration; U-235; Th-232; (CS)-C-137; Oman Sea; Sediment; NATURAL RADIOACTIVITY LEVELS; PERSIAN-GULF; BUILDING-MATERIALS; RADIONUCLIDES; SAMPLES; HAZARDS; SOIL; RIVER;

D O I：

10.1016/j.marpolbul.2012.05.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The natural radioactivity levels in sediment samples of the northern coast of Oman Sea, covering the coastal strip from Hormoz canyon to Goatr seaport, as the first time has been determined. The results of measurements will serve as background reference level for Oman Sea coastlines. Sediments from 36 coastal and near shore locations were collected for analysis. Analysis on the collected samples were carried out to determine U-235, U-238, Th-232, K-40 and Cs-137 using two high purity germanium detectors with 38.5% and 55% relative efficiencies. The concentration of U-235, U-238, Th-232, K-40 and Cs-137 in sediment samples ranged between 1.01 and 2.87 Bq/kg, 11.83 and 22.68 Bq/kg, 10.7 and 25.02 Bq/kg, 222.89 and 535.07 Bq/kg and 0.14 and 2.8 Bq/kg, respectively. The radium equivalent activity was well below the defined limit of 370 Bq/kg. The external hazard indices were found to be less than 1, indicating a low dose. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1956 / 1961

页数：6

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