Distribution of U and Th decay series and rare earth elements in sediments of Santos Basin:: Correlation with industrial activities

被引：0
|
作者：
Silva, PSC
Mazzilli, BP
Fávaro, DIT
机构：
[1] IPEN, Div Radiometria Ambiental, Sao Paulo, Brazil
[2] IPEN, Lab Anal Ativacao Neutron, Sao Paulo, Brazil
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2005年 / 264卷 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
D O I：
10.1007/s10967-005-0736-3
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Santos Basin, located in Southwest Brazil, is considered the most important industrial region of the country. Among the industrial activities present, phosphate fertilizer plants are responsible for the production of 69 million tons of phosphogypsum waste, which is stockpiled in the surrounding environment. This waste concentrates radionuclides of the natural series as well as rare earth elements originally present in the phosphate rock used as raw material. This study aims to evaluate the environmental impact of such activities in the sediments of the estuarine system by measuring the concentration of U, Th and rare earth elements and activity concentration of radionuclides (226)Ra, (228)Ra, (228)Th and (210)Pb.
引用
收藏
页码：449 / 455
页数：7
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