Allafchian Ali Reza, Farajmand Bahman, Koupaei Amin Javaheri
Research Institute for Nanotechnology and Advanced Material, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
Department of chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran.
Bull Environ Contam Toxicol. 2018 Apr;100(4):529-535. doi: 10.1007/s00128-018-2297-5. Epub 2018 Feb 19.
In this research, the thin film microextraction method was applied for the extraction of Ni(II) ion from aqueous matrixes. Chemically modified cellulosic filter paper with phosphorus was used as a thin film extractor. After extraction, the thin film was treated with a solution of dimethylglyoxime. The colored film was captured by flatbed scanner and the absorbance of the images was extracted by some suitable software. Under the optimum conditions and at the pH 7.0, with the sample volume of 100 mL, the stirring rate of 800 rpm, and the extraction time of 50 min, the calibration curve was obtained in the range of 0.05-5 mg/L Ni(II) (R = 0.989). Limit and relative standard deviation were achieved to be 18 µg/L and less than 6.7%, respectively. Relative recoveries were obtained in the range of 87%-105%. Finally, the proposed method was found to be simple and cost-effective, with adequate analytical performance for the rapid detection of Ni(II) in river and wastewater samples.
在本研究中，采用薄膜微萃取法从水基质中萃取镍（II）离子。用含磷的化学改性纤维素滤纸作为薄膜萃取器。萃取后，用丁二酮肟溶液处理薄膜。用平板扫描仪采集有色薄膜图像，并通过合适的软件提取图像的吸光度。在最佳条件下，pH值为7.0，样品体积为100 mL，搅拌速率为800 rpm，萃取时间为50 min，得到了镍（II）浓度在0.05 - 5 mg/L范围内的校准曲线（R = 0.989）。检出限和相对标准偏差分别为18 μg/L和小于6.7%。相对回收率在87% - 105%范围内。最后，该方法被证明简单且经济高效，对河流和废水样品中镍（II）的快速检测具有足够的分析性能。
