Faculty of Sciences, Chemistry Department, Marmara University, İstanbul, Turkey.
Anal Sci. 2023 Jul;39(7):1065-1071. doi: 10.1007/s44211-023-00315-7. Epub 2023 Mar 25.
In recent years, interest in green solvents, which are environmentally friendly, easy to prepare and biodegradable, and in their applications in chemistry has considerably increased. In the current study, a new and easy deep eutectic solvent-based liquid-phase microextraction method compatible with green chemistry principles was developed for preconcentration of Pb (II) ions. The amount of Pb (II) ions was determined with graphite furnace atomic absorption spectrometry (GFAAS). Various analytical parameters such as deep eutectic solvent (DES) ratio and amount, ligand amount, pH, sample volume were optimized and the effects of potential matrix ions on the method were investigated. The preconcentration factor of the method was found to be 160, while the limit of detection (LOD) and limit of quantification (LOQ) were found to be 0.071 µg L and 0.236 µg L, respectively. The developed procedure was performed to determine Pb (II) ions in lake and river waters, and the accuracy of the procedure was determined with certified reference wastewater (SPS-WW1) analysis.
近年来，人们对绿色溶剂的兴趣与日俱增，这些溶剂环保、易于制备、可生物降解，并且在化学中的应用也越来越广泛。在本研究中，开发了一种新的、简单的、符合绿色化学原则的基于深共晶溶剂的液相微萃取方法，用于预浓缩 Pb(II)离子。使用石墨炉原子吸收光谱法（GFAAS）测定 Pb(II)离子的含量。优化了深共晶溶剂（DES）的比例和用量、配体用量、pH 值、样品体积等各种分析参数，并研究了潜在基质离子对该方法的影响。该方法的富集因子为 160，检出限（LOD）和定量限（LOQ）分别为 0.071µg L 和 0.236µg L。该方法用于测定湖泊和河水中的 Pb(II)离子，并通过对认证参考废水（SPS-WW1）的分析来确定该方法的准确性。
