Measurement of ²²⁴Ra and ²²³Ra activity using MnO₂ based in situ pre-concentration technique coupled with delayed coincidence counting in creek ecosystem of Mumbai Harbour Bay

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• 作者：V. B. Yadav ; S. J. Sartandel ; S. K. Jha…
• 关键词：224Ra and 223Ra ; Creek ecosystem ; Groundwater discharge ; Coincidence counting
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：311
• 期：1
• 页码：565-570
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nuclear Chemistry; Physical Chemistry; Nuclear Physics, Heavy Ions, Hadrons; Diagnostic Radiology; Inorganic Chemistry;
• 出版者：Springer Netherlands
• ISSN：1588-2780
• 卷排序：311

文摘

Measurement of short lived radium isotopes (224Ra and 223Ra) in seawater samples collected from Mumbai Harbour Bay was carried out using MnO₂ based in situ pre-concentration technique coupled with delayed coincidence counting. Standardisation and validation of various parameters required for quantification was carried out. Longitudinal variation of 224Ra and 223Ra found in the range 17.74–98.66 and 0.56–2.26 dpm 100 L−1 respectively. Elevated concentration of 224Ra and 223Ra was found near shore sampling points where reused seawater and surface water from land intrudes in creek. Higher concentration in creek compared to offshore locations indicates presence of submarine groundwater discharge.