A study of trace element contamination in river sediments in Serbia using microwave-assisted aqua regia digestion and multivariate statistical analysis
A study of trace element contamination in river sediments in Serbia using microwave-assisted aqua regia digestion and multivariate statistical analysis
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DOI：
10.1016/j.microc.2011.06.027
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发表时间：
2011-11
影响因子：
4.8
通讯作者：
S. Sakan;D. Đorđević;G. Dević;D. Relić;I. Anđelković;Jelena Ðuričić
中科院分区：
文献类型：
--
作者：
S. Sakan;D. Đorđević;G. Dević;D. Relić;I. Anđelković;Jelena Ðuričić
本研究的目的是评价塞尔维亚最重要的河流及其支流沉积物中的微量元素污染水平。采用微波消解技术结合电感耦合等离子体原子发射光谱法测定沉积物中12种微量和常量元素（Ca、Cd、Co、Cr、Cu、Fe、Mn、Pb、Ni、Zn、Be、V）的王水可溶性含量。相关分析和主成分分析区分了岩性成因和人为成因因素。Fe、Mn、Be和V含量受区域岩性高背景因子控制，Cd、Cr、Pb、Ni、Zn和Cu是污染的示踪剂。对于Co，证实了岩石成因和人为输入的混合来源。调查的塞尔维亚主要河流及其支流沉积物中重金属含量较高，特别是镉、铅、铜和锌，可能造成严重的环境影响。从多瑙河进入塞尔维亚的入海口流入多瑙河的河流显著地影响了水和沉积物的化学负荷。采用两种BCR标准对照品进行实验研究。计算精度和精密度证实了所采用方法的良好性能。
The aim of this study was the evaluation of the trace element contamination level in sediments of the most important rivers in Serbia and their tributaries. The determination of the aqua regia soluble contents of 12 micro- and macro-elements (Ca, Cd, Co, Cr, Cu, Fe, Mn, Pb, Ni, Zn, Be and V) in sediments was developed by the microwave digestion technique combined with inductively coupled plasma atomic emission spectrometry. Correlation analysis and principal component analysis distinguishes factors of lithogenic and anthropogenic origins. The Fe, Mn, Be and V contents are controlled by a regional lithogenic high background factor, while Cd, Cr, Pb, Ni, Zn and Cu are recognized as tracer of pollution. For Co, mixed sources from both lithogenic and anthropogenic inputs were evidenced. The investigated sediment of the major rivers and their tributaries in Serbia showed high concentrations of metals, especially of Cd, Pb, Cu and Zn, which may cause serious environmental impacts. Rivers which flow into the Danube from its entrance into Serbia significantly influence the chemical load of the water and sediments. The experimental study was conducted using two BCR standard reference materials. The calculated accuracy and precision confirmed the good performance of the adopted procedures.