采用 ED-XRF 技术测定的表层沉积物地球化学模型：亚得里亚海博卡湾的案例研究。
The geochemistry model of the surface sediment determined by using ED-XRF technique: a case study of the Boka Kotorska bay, Adriatic Sea.
机构信息
Faculty of Technology and Metallurgy, Department of Analytical Chemistry, University of Belgrade, 11000, Belgrade, Serbia.
Vinča Institute of Nuclear Sciences, University of Belgrade, 11001, Belgrade, Serbia.
出版信息
Environ Sci Pollut Res Int. 2016 Jun;23(12):11777-89. doi: 10.1007/s11356-016-6353-6. Epub 2016 Mar 7.
The spatial distribution of major oxides (Na2O, K2O, SiO2, Al2O3, Fe2O3, CaO, MgO, MnO, TiO2, P2O5) and numerous elements (Cr, Co, Ni, Cu, Zn, As, Se, Pb, Sn, Sb, Ba, Sr, Br, Rb, Zr, Mo, Cs, Y, V, Ga, La, U, Th, Nb, W, Sc, Ge, Gd, Yb, Hf, and Ce) was determined by using energy dispersive X-ray fluorescence spectrometry on the basis of previously measured organic matter and carbonates. The optimal measuring variables for the investigated oxides and elements were determined by using five standard reference materials. The carbonated sediment type can be determined on the basis of the highest Sr, Sc, La, Nb, Hf, and Yb concentrations followed with the lowest concentrations of the remaining elements and the negative Ce anomaly. The complexity of the obtained data was also examined by principal component analysis (PCA) and cluster analysis (CA) in the identifying geochemical composition of the surface sediment. Boka Kotorska bay's geographical position, orographical configuration, and hydrographic characteristics influence the geochemistry model of the surface sediment, quite different from the open sea.
采用能量色散 X 射线荧光光谱法，在先前测量的有机物和碳酸盐基础上，确定了主要氧化物（Na2O、K2O、SiO2、Al2O3、Fe2O3、CaO、MgO、MnO、TiO2、P2O5）和多种元素（Cr、Co、Ni、Cu、Zn、As、Se、Pb、Sn、Sb、Ba、Sr、Br、Rb、Zr、Mo、Cs、Y、V、Ga、La、U、Th、Nb、W、Sc、Ge、Gd、Yb、Hf 和 Ce）的空间分布。通过对 5 种标准参考物质的测量，确定了研究中氧化物和元素的最佳测量变量。根据 Sr、Sc、La、Nb、Hf 和 Yb 浓度最高，剩余元素浓度最低以及 Ce 呈负异常的特点，可以确定碳酸盐沉积物的类型。通过主成分分析（PCA）和聚类分析（CA），对表层沉积物的地球化学组成进行分析，还研究了所得数据的复杂性。博卡湾的地理位置、地形配置和水文特征影响了表层沉积物的地球化学模型，使其与开阔海域有很大的不同。
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