Distribution of rare earth elements in the estuarine and coastal sediments of the Daliao River System, China
Distribution of rare earth elements in the estuarine and coastal sediments of the Daliao River System, China
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大辽河流域河口及沿岸沉积物稀土元素分布
DOI：
10.1007/s10967-013-2508-9
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发表时间：
2013-04
影响因子：
1.6
通讯作者：
Li Ruiping
中科院分区：
文献类型：
--
作者：
Lin Chunye;Liu Shaoqing;He Mengchang;Li Ruiping
辽东湾大辽河水系（DRS）河口具有高度工业化、城市化和农业化的流域。本研究的目的是确定河口和沿海沉积物中稀土元素 (REE) 的含量、行为和分布。为此，从河口和沿海地区收集了 35 个沉积物样品，并分析了稀土元素、铁、铝和锰。沉积物的平均浓度（mg kg−1）为 33.4 (La)、64.1 (Ce)、7.9 (Pr)、29.0 (Nd)、5.4 (Sm)、1.2 (Eu)、4.2 (Gd)、0.78 (Tb)、4.0 (Dy)、0.84 (Ho)、2.3 (Er)、 0.40（Tm）、2.3（Yb）和0.37（Lu）。沉积物中的 REE 浓度彼此显着相关 (r2= 0.959–0.988)，并且与 Fe、Al 和 Mn 的浓度 (r2= 0.768–0.870) 显着相关。 ΣREE 总浓度范围为 73.5 至 203.5 mg kg−1，平均为 156.0 mg kg−1，且河口沉积物中的总浓度普遍高于沿海沉积物，这很可能是由于盐引起河流胶体凝结并随后在河口底部积累所致。轻稀土元素 (ΣLREE) 与重稀土元素 (ΣHREE) 的比率为 9.4。观察到 DRS 的河口和沿海沉积物、河流悬浮颗粒和流域土壤的球粒陨石归一化 REE 分布相似，其中 LRRE 富集度高于 HREE，Eu 消耗量高于 Ce 消耗量。这些结果表明，将土壤带入河口沉积物的地球化学过程和长期的工农业活动都不会改变研究区域稀土元素的分布或分馏。
The Daliao River System (DRS) estuary in Liaodong Bay features a highly industrial, urbanized, and agricultural catchment. The objective of this study was to determine the content, behavior, and distribution of the rare earth elements (REEs) in the estuarine and coastal sediments. To this end, 35 sediment samples were collected from the estuarine and coastal area and analyzed for REEs, Fe, Al, and Mn. The mean concentrations in mg kg−1of the sediments were 33.4 (La), 64.1 (Ce), 7.9 (Pr), 29.0 (Nd), 5.4 (Sm), 1.2 (Eu), 4.2 (Gd), 0.78 (Tb), 4.0 (Dy), 0.84 (Ho), 2.3 (Er), 0.40 (Tm), 2.3 (Yb), and 0.37 (Lu). The REE concentrations in the sediments were significantly correlated with one another (r2= 0.959–0.988) and the concentrations of Fe, Al, and Mn (r2= 0.768–0.870). The total concentration ∑REE ranged from 73.5 to 203.5 mg kg−1, with an average of 156.0 mg kg−1being observed, and generally higher in the estuarine sediments than in the coastal sediments, most likely due to the salt-induced coagulation of river colloids and subsequently their accumulation at the estuarine bottom. The ratio of light REEs (∑LREE) to heavy REEs (∑HREE) was 9.4. Chondrite-normalized REE distributions were observed to be similar for the estuarine and coastal sediments, riverine suspended particles, and watershed soils of the DRS with higher LRRE enrichment than HREE and greater Eu depletion than Ce depletion. These results demonstrate that neither geochemical processes that carry soils to estuarine sediments nor long-term industrial and agricultural activities alter the distribution or fractionation of the REEs in the study area.
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影响因子：
9.8
作者：
M. Benarie
通讯作者：
M. Benarie
无定河下游表层沉积物稀土元素分布
影响因子：
1.6
作者：
Longjiang mao;Duowen Mo;Ke Hu;Jinghong Yang
通讯作者：
Jinghong Yang
影响因子：
5.8
作者：
J. Borrego;Nieves López-González;B. Carro;O. Lozano-Soria
通讯作者：
J. Borrego;Nieves López-González;B. Carro;O. Lozano-Soria
大辽河水系SPM中稀土元素含量及其与我国沉积物、黄土和土壤的比较
DOI：
10.1016/s1002-0721(08)60108-8
发表时间：
2008-06
期刊：
中国稀土学报(英文版)
影响因子：
--
作者：
Yang Zhifeng;Li Yanxia;Yang Linsheng;Liu Ruimin;He Mengchang;Lin Chunye
通讯作者：
Lin Chunye
DOI：
10.1023/b:jrnc.0000011747.05704.63
发表时间：
2003-12
影响因子：
1.6
作者：
S. M. B. D. Oliveira;F. E. Larizzatti;D. I. Fávaro;S. R. D. Moreira;B. Mazzilli;E. Piovano
通讯作者：
S. M. B. D. Oliveira;F. E. Larizzatti;D. I. Fávaro;S. R. D. Moreira;B. Mazzilli;E. Piovano