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首页> 外文期刊>Analytica chimica acta >Fast sequential multi-element determination of major and minor elements in environmental samples and drinking waters by high-resolution continuum source flame atomic absorption spectrometry
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Fast sequential multi-element determination of major and minor elements in environmental samples and drinking waters by high-resolution continuum source flame atomic absorption spectrometry

机译：高分辨率连续流源火焰原子吸收光谱法快速连续的多元素测定环境样品和饮用水中的主要和次要元素

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摘要

The fast sequential multi-element determination of 11 elements present at different concentration levels in environmental samples and drinking waters has been investigated using high-resolution continuum source flame atomic absorption spectrometry. The main lines for Cu (324.754 nm), Zn (213.857 nm), Cd (228.802 nm), Ni (232.003 nm) and Pb (217.001 nm), main and secondary absorption lines for Mn (279.482 and 279.827 nm), Fe (248.327, 248.514 and 302.064 nm) and Ca (422.673 and 239.856 nm), secondary lines with different sensitivities for Na (589.592 and 330.237 nm) and K (769.897 and 404.414 nm) and a secondary line for Mg (202.582 nm) have been chosen to perform the analysis. A flow injection system has been used for sample introduction so sample consumption has been reduced up to less than 1 mL per element, measured in triplicate. Furthermore, the use of multiplets for Fe and the side pixel registration approach for Mg have been studied in order to reduce sensitivity and extend the linear working range. The figures of merit have been calculated and the proposed method was applied to determine these elements in a pine needles reference material (SRM 1575a), drinking and natural waters and soil extracts. Recoveries of analytes added at different concentration levels to water samples and extracts of soils were within 88-115% interval. In this way, the fast sequential multi-element determination of major and minor elements can be carried out, in triplicate, with successful results without requiring additional dilutions of samples or several different strategies for sample preparation using about 8-9 mL of sample. (C) 2014 Elsevier B.V. All rights reserved.
机译：使用高分辨率连续谱源火焰原子吸收光谱法研究了快速顺序的多元素测定环境样品和饮用水中不同浓度水平的11种元素。 Cu（324.754 nm），Zn（213.857 nm），Cd（228.802 nm），Ni（232.003 nm）和Pb（217.001 nm）的主线，Mn（279.482和279.827 nm），Fe（已选择248.327、248.514和302.064 nm）和Ca（422.673和239.856 nm），对Na（589.592和330.237 nm）和K（769.897和404.414 nm）具有不同灵敏度的辅助线以及对Mg（202.582 nm）的辅助线进行分析。流动注射系统已用于样品引入，因此一式三份测量，每个元素的样品消耗降低至小于1 mL。此外，为了降低灵敏度并扩展线性工作范围，已经研究了对Fe使用多重态和对Mg使用侧像素配准方法。计算了品质因数，并将所提出的方法应用于确定松针标准物质（SRM 1575a），饮用水，天然水和土壤提取物中的这些元素。以不同浓度添加到水样和土壤提取物中的分析物的回收率在88-115％之间。以此方式，可以一式三份快速连续地进行主要元素和次要元素的多元素测定，并获得成功的结果，而无需额外稀释样品或使用约8-9 mL样品进行几种不同的样品制备策略。 （C）2014 Elsevier B.V.保留所有权利。

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