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首页> 外文期刊>Geochemistry: exploration, environment, analysis >The characteristics of rare earth elements in bulk precipitation, throughfall, foliage and lichens in the Lesní potok catchment and its vicinity, Czech republic
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The characteristics of rare earth elements in bulk precipitation, throughfall, foliage and lichens in the Lesní potok catchment and its vicinity, Czech republic

机译：捷克共和国LesníPotok流域及其附近大块降水，穿透瀑布，枝叶和地衣中的稀土元素特征

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摘要

A comparison of rare earth elements' (REE) atmospheric signatures in various ecosystem compartments was carried out in the vicinity of the Lesní potok catchment (LP), Czech Republic. REE signatures were investigated from 2004 to 2006 in rainwater, throughfall, tree foliage (Picea abies, Fagus sylvatica) and lichens (Hypogymniaphysodes) for selected elements (Al, Ca, Fe, K, Mg, Mn, Na, P, S, Si). REE concentrations increased in the following sequences: bulk precipitation< beech throughfall< spruce throughfall and spruce needles< beech leaves lichens. The crustal origin of REEs in bulk precipitation was confirmed by its high correlation with lithogenic elements, by the seasonal variation in REE concentrations and by comparison of REE distribution patterns of the upper continental crust, local granites and soil. Enrichment factors calculated in relation to bulk precipitation and normalized to Na enabled elimination of the influence of dry deposition and wash-out. Higher REE concentrations in throughfall were then identified to be the result of the wash-out of dry deposition, while REEs were found to bioaccumulate in vegetation, although at a much smaller rate than the essential elements K, Mn, P, Mg and Ca.
机译：在捷克共和国的Lesnípotok流域（LP）附近，比较了各种生态系统隔室中稀土元素（REE）的大气特征。从2004年至2006年对雨水，穿透水，树叶（Picea abies，Fagus sylvatica）和地衣（Hypogymniaphysodes）中的REE特征进行了调查，以选择元素（Al，Ca，Fe，K，Mg，Mn，Na，P，S，Si ）。 REE浓度按以下顺序增加：整体降水量＜山毛榉穿透量＜云杉穿透量和云杉针＜山毛榉树叶地衣。稀土元素的地壳起源与成岩元素的高度相关性，稀土元素浓度的季节性变化以及上大陆壳，局部花岗岩和土壤的稀土元素分布模式的比较，证实了稀土元素的地壳起源。计算出的与大量沉淀有关的富集因子并归一化为Na可以消除干沉降和冲刷的影响。然后确定穿透物中较高的REE浓度是干沉积物被冲走的结果，而REE被发现在植物中生物蓄积，尽管其速率远低于基本元素K，Mn，P，Mg和Ca。

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