西江上游河水悬浮物中稀土元素的地球化学特征
Rare-earth Elements(REEs)of the Suspended Particulate Matter in the Upper Reaches of the Xijiang River
查看参考文献22篇
|
文摘
|
采用改进的BCR逐级提取法和ICP-MS测试技术,对西江上游河流悬浮物中稀土元素进行了研究.结果表明:河流悬浮物稀土元素总量的含量变化范围在188~402mg/kg之间,并主要来源于流域内岩石的风化,反映了源区的物质特征.西江上游河水悬浮物中三种非稳定态(即酸可提取态、铁锰氧化物结合态和有机物硫化物结合态)稀土元素页岩(PAAS)标准化配分模式均显示出中稀土富集的特征. 这种配分模式可能是由于流域内广布的海相沉积岩中磷酸盐矿物的风化所造成的.稳定态(即残渣态)的配分曲线较为平直,没有体现出明显的稀土分异.悬浮态稀土各赋存形态含量的顺序为:残渣态>有机物硫化物结合态、铁锰氧化物结合态>酸可提取态.中稀土元素Sm、Eu、Gd相对于轻、重稀土元素的稳定态所占比例偏低,而相对于三种非稳定态所占比例偏高,反映了其潜在的地球化学活性 |
|
其他语种文摘
|
The rare-earth elements(REEs)of suspended particulate matter(SPM)in the upper reaches of the Xijiang River were measured by inductively coupled plasma mass spectrometry(ICP-MS)after improving the BCR sequential extraction method. The result showed that the total REE concentrations of SPM are obviously higher than those of dissolved load, ranging from 188~402mg/kg. The PAAS-normalized REE patterns for the three unstable fractions of REEs(AEC, bound to Fe-Mn oxides, bound to organic matter)exhibit middle REEs(MREEs)enrichment, indicating the preferential weathering of phosphatic minerals. The stable fraction of REEs(residual)presents a flat PAAS-normalized REE pattern, indicating no significant fractionation of REE in residual form. The percentage of four fractions of SPM obeys the following order:residual> bound to organic matter, bound to Fe-Mn oxides>AEC.The MREEs(Sm,Eu,Gd)have relatively lower percentages in the residual fraction and higher in other three unstable fractions |
|
来源
|
地球与环境
,2010,38(4):414-420 【核心库】
|
|
关键词
|
西江上游
;
稀土元素
;
悬浮物
|
|
地址
|
1.
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵州, 贵阳, 550002
2.
中国科学院地质与地球物理研究所, 北京, 100029
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1672-9250 |
|
学科
|
地质学;环境科学基础理论 |
|
基金
|
国家973计划
;
国家自然科学基金
|
|
文献收藏号
|
CSCD:4108310
|
参考文献 共
22
共2页
|
|
1.
Goldstein S J. Rare earth elements in river waters.
Earth and Planetary Science Letters,1998,89:35-47
|
CSCD被引
1
次
|
|
|
|
|
2.
Elderfield H. The rare earth elements in rivers, estuaries, and coastal seas and their significance to the composition of ocean water.
Geochimica Cosmochimica Acta,1990,54:971-991
|
CSCD被引
96
次
|
|
|
|
|
3.
Sholkovitz E R. The estuarine chemistry of rare earth elements:Comparison of the Amazon,Fly, Sepik and the Gulf of Papua systems.
Earth and Planetary Science Letters,2000,179:299-309
|
CSCD被引
21
次
|
|
|
|
|
4.
Sholkovitz E R. The aquatic chemistry of rare earth elements in rivers and estuaries.
Aquatic Geochemistry,1995,1:1-34
|
CSCD被引
40
次
|
|
|
|
|
5.
Nozaki Y. The estuarine geochemistry of rare earth elements and indium in the Chao Phraya River, Thailand.
Geochimica Cosmochimica Acta,2000,64:3983-3994
|
CSCD被引
25
次
|
|
|
|
|
6.
Quevauviller P H. Improvement of analytical measurements within the BCR--programme:single and sequential extraction procedures applied to soil and sediment analysis.
Int. J. Environ. Anal. Chem,1993,51:129-134
|
CSCD被引
1
次
|
|
|
|
|
7.
Quevauviller P. Operationally defined extraction procedure for soil and sediment analysisⅠ. Standardization.
Trends Anal. Chem,1998,17(5):289-298
|
CSCD被引
32
次
|
|
|
|
|
8.
dman F. Validation of a field filtration technique for characterization of suspended particulate matter from freshwater. PartⅠ. Major elements.
Applied Geochemistry,1999,14:301-317
|
CSCD被引
3
次
|
|
|
|
|
9.
刘丛强.
生物地球化学过程与地表物质循环--西南喀斯特流域侵蚀与生源要素循环,2007:138
|
CSCD被引
1
次
|
|
|
|
|
10.
水利部珠江水利委员会<<珠江志>>编篆委员会.
珠江志(第一卷),1991
|
CSCD被引
1
次
|
|
|
|
|
11.
Xu Z F. Chemical weathering in the upper reaches of Xijiang River draining the Yunnan-Guizhou Plateau, Southwest China.
Chemical Geology,2007,239:83-95
|
CSCD被引
39
次
|
|
|
|
|
12.
Rauret G. Improvement of the BCR three-step sequential extraction procedure prior to the certification of new sediment and soil reference materials.
J. Environ. Monit,1999,1:57-61
|
CSCD被引
382
次
|
|
|
|
|
13.
Xu Z F. Rare earth elements(REE)of dissolved and suspended loads in the Xijiang River, South China.
Applied Geochemistry,2009,24:1803-1816
|
CSCD被引
15
次
|
|
|
|
|
14.
Martin J M. Element mass balance of material carried by major world rivers.
Mar. Chem,1979,7:173-206
|
CSCD被引
55
次
|
|
|
|
|
15.
Roaldset E. Rare earth elements in quaternary clays of numedel area, Southern Norway.
Lithos,1973,6:349-372
|
CSCD被引
4
次
|
|
|
|
|
16.
Johannesson K H. Rare-earth element geochemistry of Colour Lake,an acidic freshwater lake on Axel Heiberg Island, Northwest Territories, Canada.
Chemical Geology,1995,119:209-223
|
CSCD被引
11
次
|
|
|
|
|
17.
Johannesson K H. Geochemistry of rare-earth elements in hypersaline and dilute acidic natural terrestrial waters:complexation behavior and middle rare-earth elements enrichments.
Chemical Geology,1996,133:125-144
|
CSCD被引
33
次
|
|
|
|
|
18.
Johannesson K H. Origin of middle rare earth elements in acid waters of a Canadian High Arctic Lake.
Geochimica Cosmochimica Acta,1999,63:153-165
|
CSCD被引
19
次
|
|
|
|
|
19.
Johannesson K H. Origin of rare earth element signatures in groundwaters of circumneutral pH from southern Nevada and eastern California,USA.
Chemical Geology,2000,164:239-257
|
CSCD被引
12
次
|
|
|
|
|
20.
Johannesson K H. Rare earth elements concentrations and speciation in organic-rich blackwaters of the Great Dismal Swamp, Virginia,USA.
Chemical Geology,2004,209:271-294
|
CSCD被引
14
次
|
|
|
|
|
了解气象卫星更多信息，请访问