Barium transport and isotopic fractionation in plantsOA
Excess barium(Ba)in soil can result in Ba overenrichment in crops,which may adversely affect human health.However,the transport and isotopic fractionation of Ba in plants remain poorly understood.We analyzed the Ba content and isotopic composition of three crops(rice,pak choi,and maize)grown in Ba-contaminated soil.Results for rice and maize demonstrated significant fractionation and environmental sensitivity in the transport of Ba,and longer flooding durations were found to increase Ba accumulation in rice grains during the filling stage.In contrast,research on pak choi revealed limited fractionation and strong uptake and transport of Ba.The estimated daily intake of Ba in the edible portion of pak choi(stems and leaves)was 15-24times the recommended daily intake of 0.2 mg/kg body weight per day.Therefore,pak choi was the least suitable crop for Ba-contaminated areas.This study provides new insights into how Ba isotopic fractionation can trace Ba transport in crops,offering practical applications for food safety and environmental monitoring.
Shuming Xu;Congcong Cao;Chao Xiong;Hairun Wang;Ziqian Qiao;Kai Li;Yingzeng Gong;Huimin Yu
College of Eco-Environment Engineering,Guizhou Minzu University,Guiyang 550025,ChinaSchool of Economics and Management,Chongqing University of Arts and Sciences,Chongqing 402160,ChinaCollege of Eco-Environment Engineering,Guizhou Minzu University,Guiyang 550025,ChinaCollege of Eco-Environment Engineering,Guizhou Minzu University,Guiyang 550025,ChinaCollege of Eco-Environment Engineering,Guizhou Minzu University,Guiyang 550025,ChinaCollege of Eco-Environment Engineering,Guizhou Minzu University,Guiyang 550025,ChinaCollege of Eco-Environment Engineering,Guizhou Minzu University,Guiyang 550025,ChinaState Key Laboratory of Lithospheric and Environmental Coevolution,School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China
资源环境
Barium pollutionPlantHealth risksBarium isotopesFractionation
《Acta Geochimica》 2026 (2)
P.331-341,11
financially supported by the National Natural Science Foundation of China (No.42203014,and 42107104)Guizhou Provincial Basie Research Program (Natural Science)(MS [2025]205)the Research Fund of Guizhou Minzu University (GZMUZK[2024]QD60)
评论