Contents, Enrichment, Toxicity and Baselines of trace elements in the estuarine and coastal sediments of the Daliao River System, China
Contents, Enrichment, Toxicity and Baselines of trace elements in the estuarine and coastal sediments of the Daliao River System, China
复制标题
中国大辽河水系河口和沿岸沉积物中微量元素的含量、富集度、毒性及基线
DOI：
10.2343/geochemj.2.0206
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发表时间：
2012-10
影响因子：
0.8
通讯作者：
Li, Yanxia
中科院分区：
文献类型：
--
作者：
Lin, Chunye;He, Mengchang;Liu, Shaoqing;Li, Yanxia
辽东湾大辽河水系(DRS)河口是一个高度工业化、城市化和农业集水区。本研究的目的是研究河口和海岸沉积物中的多元素地球化学，包括丰度、来源、毒性和地球化学基线。采集了河口沿海35个沉积物样品，分析了As、Cd、Co、Cr、Cu、Hg、Ni、Pb、Sb、Sc、V、Y、Zn、P、Mn、Ti、Al、Fe、Ca、Mg、Na、K的含量，平均含量(mg/kg)分别为：As 11.4、Cd 0.34、Co 10.2、Cr 60.8、Cu 20.0、Hg 0.05、Ni 22.6、Pb 26.6、Zn 71.8、Sb 0.68。微量元素相对于上陆壳的富集度(EF)为7.06~1.04，以Fe为参照物。总体而言，As、Cd、Sb显著或中度富集，其他微量元素未富集或轻度富集。沉积物中的As和Ni可能对生物群构成潜在的毒性，而Cd、Cr、Cu、Hg、Pb和Zn可能很少或不会对生物群产生毒性。除钙、钾、钠外，其余元素间均呈显著正相关，相关系数在0.523~0.994之间。主成分分析(PCA)揭示了与次生粘土矿物、原生矿物和碳酸盐矿物有关的三组元素。自然源沉积物中的铬、铜、汞、镍、铅、锌等元素的区域地球化学基线(RGB)一般是以铁为参照物。这些RGB可能有助于确定这些金属在辽东湾沉积物中的来源，并记录它们随时间的变化。
The Daliao River System (DRS) estuary in the Liaodong Bay has a highly industrial, urbanized, and agricultural catchment. The objective of this study was to investigate the multi-elemental geochemistry in the estuarine and coastal sediments, including enrichment, sources, toxicity, and geochemical baselines. Thirty-five sediment samples were collected from the estuarine and coastal area and analyzed for As, Cd, Co, Cr, Cu, Hg, Ni, Pb, Sb, Sc, V, Y, Zn, P, Mn, Ti, Al, Fe, Ca, Mg, Na, and K. The average content (mg/kg) was 11.4 for As, 0.34 for Cd, 10.2 for Co, 60.8 for Cr, 20.0 for Cu, 0.05 for Hg, 22.6 for Ni, 26.6 for Pb, 71.8 for Zn, and 0.68 for Sb. The enrichment factor (EF) values of the trace elements, relative to the upper continental crust (UCC), ranged from 7.06 for As to 1.04 for Co, using Fe as a reference element. In general, As, Cd, and Sb were significantly or moderately enriched, while the other trace elements were not or were minimally enriched. The As and Ni in the sediments may pose potential toxicity to biota, while the Cd, Cr, Cu, Hg, Pb, and Zn might rarely or not pose toxicity. All elements except Ca, K, and Na were significantly and positively correlated with one another, with correlation coefficients of 0.523 to 0.994. Principal component analysis (PCA) revealed three groups of elements in association with secondary clay minerals, primary minerals, and carbonate minerals. Generally, the Cr, Cu, Hg, Ni, Pb, and Zn in the sediments originated from natural sources and their regional geochemical baselines (RGBs) were developed using Fe as a reference element. These RGBs may help identify the origins of these metals in the sediments of the Liaodong Bay and document their change over time.
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影响因子：
9.8
作者：
M. Benarie
通讯作者：
M. Benarie
影响因子：
2.7
作者：
MacDonald, DD;Carr, RS;Ingersoll, CG
通讯作者：
Ingersoll, CG
影响因子：
2.3
作者：
M. Mil-Homens;R. Stevens;F. Abrantes;I. Cato
通讯作者：
M. Mil-Homens;R. Stevens;F. Abrantes;I. Cato
影响因子：
3.9
作者：
J. Stummeyer;V. Marchig;W. Knabe
通讯作者：
J. Stummeyer;V. Marchig;W. Knabe
影响因子：
8.9
作者：
M. Mil-Homens;Rodney L. Stevens;I. Cato;Fatima F Abrantes
通讯作者：
M. Mil-Homens;Rodney L. Stevens;I. Cato;Fatima F Abrantes