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首页> 外文期刊>Chemicke Zvesti >Thallium fractionation in polluted environmental samples using a modified BCR three-step sequential extraction procedure and its determination by electrothermal atomic absorption spectrometry
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Thallium fractionation in polluted environmental samples using a modified BCR three-step sequential extraction procedure and its determination by electrothermal atomic absorption spectrometry

机译：使用改进的BCR三步顺序萃取程序分离污染环境样品中的fraction，并通过电热原子吸收光谱法测定determination

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摘要

Determination of thallium in polluted environmental samples and their extracts obtained by a modified BCR three-step sequential extraction procedure was used to study thallium distribution and mobility in the monitored polluted area affected by acidification (Sobov, Central Slovakia). The results of fractionation applied to 5 soil certified reference materials and 14 environmental samples show that the vast majority of thallium occurred in the residual fraction. This means that highly toxic thallium is strongly entrapped in the parent rock materials remains immobile and its environmental toxicity is therefore reduced. The limit of detection for thallium in the studied fractions was lower than 0.050 mg kg(-1), the precision (RSD) of the ultratrace determination of thallium in the studied fractions was better than 17 % and the accuracy of the used method was verified by analyzing certified reference materials. (c) 2008 Institute of Chemistry, Slovak Academy of Sciences.
机译：测定污染的环境样品中的al及其提取物，方法是通过改进的BCR三步顺序萃取程序获得的to，用于研究受酸化影响的受监控污染区（斯洛伐克中部索波夫）的distribution分布和迁移率。对5种经土壤认证的参考材料和14种环境样品进行分馏的结果表明，绝大多数of都存在于残留物中。这意味着剧毒的strongly被强烈地困在母岩材料中，因此不能移动，因此降低了环境毒性。所测馏分中的检出限低于0.050 mg kg（-1），所测馏分中the的超痕量测定的精密度（RSD）优于17％，并验证了所用方法的准确性通过分析认证的参考材料。 （c）斯洛伐克科学院2008年化学研究所。

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