Bejaoui Kefi Bochra, Bouchmila Imen, Martin Patrick, M'Hamdi Naceur
Laboratory of Useful Materials, National Institute of Research and Pysico-Chemical Analysis (INRAP), Technopark of Sidi Thabet, Ariana 2020, Tunisia.
Department of Chemistry, Faculty of Sciences of Bizerte, University of Carthage, Zarzouna 7021, Tunisia.
Materials (Basel). 2022 Jan 21;15(3):822. doi: 10.3390/ma15030822.
To increase the sensitivity of the analysis method of good copper sample preparation is essential. In this context, an analytical method was developed for sensitive determination of Cu (II) in environmental water samples by using TiO nanotubes as a solid-phase extraction absorbent (SPE). Factors affecting the extraction efficiency including the type, volume, concentration, and flow rate of the elution solvent, the mass of the adsorbent, and the volume, pH, and flow rate of the sample were evaluated and optimized. TiO nanotubes exhibited their good enrichment capacity for Cu (II) (~98%). Under optimal conditions, the method of the analysis showed good linearity in the range of 0-22 mg L (R > 0.99), satisfactory repeatability (relative standard deviation: RSD was 3.16, = 5), and a detection limit of about 32.5 ng mL. The proposed method was applied to real water samples, and the achieved recoveries were above 95%, showing minimal matrix effect and the robustness of the optimized SPE method.
为提高分析方法的灵敏度，良好的铜样品制备至关重要。在此背景下，开发了一种分析方法，以二氧化钛纳米管作为固相萃取吸附剂（SPE）用于灵敏测定环境水样中的Cu（II）。评估并优化了影响萃取效率的因素，包括洗脱溶剂的类型、体积、浓度和流速、吸附剂的质量以及样品的体积、pH值和流速。二氧化钛纳米管对Cu（II）表现出良好的富集能力（约98%）。在最佳条件下，该分析方法在0 - 22 mg/L范围内显示出良好的线性（R > 0.99）、令人满意的重复性（相对标准偏差：RSD为3.16，n = 5）以及约32.5 ng/mL的检测限。该方法应用于实际水样，回收率高于95%，显示出最小的基质效应以及优化的固相萃取方法的稳健性。
