Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland.
Chemosphere. 2021 Jan;262:127699. doi: 10.1016/j.chemosphere.2020.127699. Epub 2020 Jul 18.
Determination of Pd traces in environmental samples is still a challenging analytical task. The aim of this study was to propose an efficient system (i.e. ion-exchange resin and eluent) for Pd elution from SPE column after the analyte preconcentration. Moreover, the search was focused on solvents that would not interfere voltammetric determination of Pd, as well as ICP-MS analysis. Five ion-exchange sorbents were compared in terms of effective Pd separation from matrix components when using different eluents. The highest recovery (up to 91%) of palladium was obtained for Dowex 1 and ammonium buffer as the eluent. This solution not only provides relatively high palladium elution efficiency but also allows both voltammetric and ICP-MS determinations, without any additional sample preparation. It was proven that the proposed procedure including SPE separation and determination with AdSV and/or ICP-MS could be used for quantitative Pd measurement in environmental samples, such as quartz sand used for the monitoring of Pd emission in the areas of high traffic density.
环境样品中钯痕迹的测定仍然是一项具有挑战性的分析任务。本研究的目的是提出一种有效的系统（即离子交换树脂和洗脱液），用于在分析物预浓缩后从 SPE 柱上洗脱钯。此外，研究的重点是寻找不会干扰钯的伏安法测定以及 ICP-MS 分析的溶剂。在使用不同洗脱液时，比较了五种离子交换吸附剂，以有效分离钯与基质成分。当使用 Dowex 1 和氨缓冲液作为洗脱液时，钯的回收率最高（高达 91%）。该溶液不仅提供了相对较高的钯洗脱效率，而且还允许进行伏安法和 ICP-MS 测定，而无需进行任何额外的样品制备。事实证明，包括 SPE 分离和使用 AdSV 和/或 ICP-MS 进行测定的提议程序可用于定量测定环境样品中的钯，例如用于监测高交通密度区域钯排放的石英砂。
