海洋地质与第四纪地质2024，Vol.44Issue(4)：88-98,11.DOI:10.16562/j.cnki.0256-1492.2023052902
长江下游与浙江主要河流枯水期悬浮物稀土元素组成研究
On the composition of rare earth elements of suspended substance in lower reach of the Yangtze River and main rivers in Zhejiang Province in dry season
摘要
Abstract
Sixty-four samples of suspended substance were collected in October-November,2021 from the lower reaches of Yangtze River and major rivers in Zhejiang Province in dry season,from which the differences of distribution characteristics of rare earth elements(REEs)and provenance indication of the suspended substance were discussed.Results show that the average REE contents in the suspended substance from the lower reaches of the Yangtze River,Qiantang River,Jiaojiang River,and Oujiang River in dry season were about 209.52,173.64,211.86,and 228.70 mg/kg,respectively,and the contents of REEs of the Qiantang River and the Oujiang River were obviously higher than previous data.The normalized partition curve against the value of North American Shale Composition(NASC)was gentle in general and slightly incline to the right,with obvious MREE enrichment,which is consistent in overall with the previous studies of the Yangtze River and major rivers in Zhejiang Province.The diagrams of(La/Yb)NASC vs(La/G)NASC,the index of(La/Yb)NASC,and(La/Gd)NASC were used to distinguish provenance of the Yangtze River from rivers in Zhejiang Province.The distribution scope of(La/Yb)NASC and(La/Gd)NASC of suspended substance of this study is more concentrated than those of the historical data,which mean that suspended substance could be used for river provenance study.关键词
悬浮物/稀土元素/物源/长江/浙江河流Key words
suspended substance/rare earth elements/provenance/the Yangtze River/Rivers of Zhejiang Province分类
海洋科学引用本文复制引用
贾贤明,陈坚,汪柯宇,冯启营,李云海,李茂森..长江下游与浙江主要河流枯水期悬浮物稀土元素组成研究[J].海洋地质与第四纪地质,2024,44(4):88-98,11.基金项目
自然资源部第三海洋研究所基本科研业务费项目"细颗粒泥沙形貌与矿物特征分析与物源研究:以闽浙沿岸入海颗粒为例"(201930) （201930）
国家科技基础资源调查专项项目"中国海岛志编研"(2019FY202100) （2019FY202100）
