Investigation of ^sup 235^U, ^sup 226^Ra, ^sup 232^Th, ^sup 40^K, ^sup 137^Cs, and heavy metal concentrations in Anzali international wetland using high-resolution gamma-ray spectrometry and atomic absorption spectroscopy

Issue Title: ECOTOX, the INRA's network of ecotoxicologists Measurements of natural radioactivity levels and heavy metals in sediment and soil samples of the Anzali international wetland were carried out by two HPGe-gamma ray spectrometry and atomic absorption spectroscopy techniques. The conce...

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Published inEnvironmental science and pollution research international Vol. 23; no. 4; p. 3285
Main Authors Zare, Mohammad Reza, Kamali, Mahdi, Fallahi Kapourchali, Maryam, Bagheri, Hashem, Khoram Bagheri, Mahdi, Abedini, Ali, Pakzad, Hamid Reza
Format Journal Article
LanguageEnglish
Published Heidelberg Springer Nature B.V 01.02.2016
Subjects
Aquatic ecosystems
Atomic absorption spectroscopy
Cadmium
Cesium radioisotopes
Chromium
Efficiency
Engineering
Gamma rays
Heavy metals
Metal concentrations
Pollution
Radioactivity
Radium
Radium isotopes
Radium radioisotopes
Scientific imaging
Sediment samplers
Sediments
Sensors
Software
Spectral analysis
Spectrometry
Wetlands
Iran
Caspian Sea
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Summary:Issue Title: ECOTOX, the INRA's network of ecotoxicologists Measurements of natural radioactivity levels and heavy metals in sediment and soil samples of the Anzali international wetland were carried out by two HPGe-gamma ray spectrometry and atomic absorption spectroscopy techniques. The concentrations of 235U, 226Ra, 232Th, 40K, and 137Cs in sediment samples ranged between 1.05±0.51-5.81±0.61, 18.06±0.63-33.36±.0.34, 17.57±0.38-45.84±6.23, 371.88±6.36-652.28±11.60, and 0.43±0.06-63.35±0.94 Bq/kg, while in the soil samples they vary between 2.36-5.97, 22.71-38.37, 29.27-42.89, 472.66-533, and 1.05-9.60 Bq/kg for 235U, 226Ra, 232Th, 40K, and 137Cs, respectively. Present results are compared with the available literature data and also with the world average values. 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. Heavy metal concentrations were found to decrease in order as Fe>Mn>Sr>Zn>Cu>Cr>Ni>Pb>Co>Cd. These measurements will serve as background reference levels for the Anzali wetland.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-015-5473-8