Prete Prisco, Iannaccone Davide, Proto Antonio, Tobiszewski Marek, Cucciniello Raffaele
Environmental Chemistry Group (ECG), Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy.
Department of Analytical Chemistry, Faculty of Chemistry and EcoTech Center, Gdańsk University of Technology (GUT), 11/12 G. Narutowicza St., 80-233, Gdańsk, Poland.
Anal Bioanal Chem. 2023 Aug;415(20):5003-5010. doi: 10.1007/s00216-023-04785-6. Epub 2023 Jun 14.
Cu are ubiquitous ions in the ecosystem and are responsible of serious environmental pollution. Indeed, the development of sensitive methods for Cu detection is an urgent demand. In this work, we proposed a new spectrophotometric method for Cu determination in different water matrices (distilled water, drinking water, wastewater, and river water). The method employs a bio-based organic ligand namely tetrasodium iminodisuccinate (IDS) able to form a stable complex with the analyte with a maximum absorption at 710 nm. Within the linear range of 6.3-381 mg L, the limit of detection (LOD) was determined to be as 1.43 mg L. Moreover, the recovery data of the spiked analysis of drinking/river/wastewater water samples were also satisfactory and verified the feasibility of the method for the analysis of Cu in natural conditions. Finally, the AGREE assessment tool was used for a quantitative evaluation of the proposed method and reference method, in agreement with the green analytical chemistry principles. The results showed the lower environmental impact of the proposed method and the suitability of this novel approach for Cu in water matrices.
铜是生态系统中普遍存在的离子，会造成严重的环境污染。事实上，开发灵敏的铜检测方法是一项迫切需求。在这项工作中，我们提出了一种新的分光光度法，用于测定不同水基质（蒸馏水、饮用水、废水和河水）中的铜。该方法采用一种基于生物的有机配体，即亚氨基二琥珀酸钠四钠（IDS），它能够与分析物形成稳定的络合物，在710nm处有最大吸收。在6.3 - 381mg/L的线性范围内，检测限（LOD）测定为1.43mg/L。此外，饮用水/河水/废水水样加标分析的回收率数据也令人满意，验证了该方法在自然条件下分析铜的可行性。最后，使用AGREE评估工具对所提出的方法和参考方法进行定量评估，这与绿色分析化学原理一致。结果表明，所提出的方法对环境的影响较小，且这种新方法适用于水基质中铜的检测。
