Features and factors of radium isotopes in Tianjin’s typical estuaries

作     者：Zhe Zhang Yingchun Dong Lixin Yi Xin Hao Yajie Zheng Tianxue Lü Zhe Zhang;Yingchun Dong;Lixin Yi;Xin Hao;Yajie Zheng;Tianxue Lü

作者机构：College of Environmental Science and EngineeringNankai UniversityTianjin 300350China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2023年第42卷第8期

页      面：134-146页

核心收录：

学科分类：083001[工学-环境科学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081803[工学-地质工程] 07[理学] 0707[理学-海洋科学] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：The National Natural Science Foundation of China under contract No.42172273 

主　　题：estuary radium isotope total dissolved solids ionic strength urbanization 

摘      要：In order to characterize the features of radium isotopes in estuaries of Tianjin,a continuous survey and sampling of typical estuaries were conducted from 2013 to 2017 in this *** activities of natural radioactive radium isotopes(^(223)Ra,^(224)Ra,and ^(228)Ra)in groundwater and surface water were measured by the radium-delayed coincidence counting(RaDeCC)*** non-conservative behavior of the radium isotopes was investigated under hydrogeochemical conditions and *** results indicated that in terms of horizontal distribution,the activities of radium in groundwater(Hangu,Tanggu,and Dagang)showed an upward trend from north to south and demonstrated a higher figure than surface water(Haihe River and Duliujian River).Concerning the vertical distribution,the activitives of radium at a 15 m burial depth was higher than that at a 30 m burial depth in all *** activities of radium isotopes in the study area increased with the increase of total dissolved solids,and their desorption behavior on Fe-Mn oxides was constrained by the redox *** hydrogeological conditions resulted in variations in the vertical profile of radium *** activity of radium was regulated by seasonal variation and precipitation in groundwater and surface *** addition,the rapid urbanization has caused a significant impact on the features of radium isotopes in typical estuaries of ***,radium isotopes can be applied to reflect the impact of urbanization on surface watergroundwater *** and cleverly utilizing the relationship between behavior of radium isotopes and urbanization will promote the development of the Tianjin Binhai New Area in a healthy way.