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Preparation of polymethacrylate monolith modified with cysteine for the determination of Cr(iii) ions

机译：半胱氨酸修饰的聚甲基丙烯酸甲酯整料的制备用于测定Cr（iii）离子

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In this study, a simple and rapid polymer monolith microextraction procedure was developed for the determination of Cr( III ) ions by inductively coupled plasma-atomic emission spectrometry. A monolithic column modified with cysteine was synthesized and characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermal gravimetric analysis, specific surface area analysis and pore size distribution analysis. The influences of analytical parameters such as sample pH, adsorption time, eluent type, and coexisting ions were examined. The limit of detection (LOD) and limit of quantification (LOQ) for Cr( III ) ions were 0.005 μg mL ~(?1) and 0.017 μg mL ~(?1) , and the relative standard deviation (RSD) was 7.4% ( n = 5). The prepared cysteine functionalized monolithic column displayed good enrichment capacity and was successfully applied to the determination of Cr( III ) ions in real samples.
机译：在这项研究中，开发了一种简单而快速的聚合物整体微萃取程序，用于通过电感耦合等离子体原子发射光谱法测定Cr（III）离子。合成了用半胱氨酸修饰的整体柱，并通过扫描电子显微镜，傅里叶变换红外光谱，X射线光电子能谱，热重分析，比表面积分析和孔径分布分析对其进行了表征。分析了分析参数（例如样品的pH，吸附时间，洗脱液类型和共存离子）的影响。 Cr（III）离子的检出限（LOD）和定量限（LOQ）为0.005μgmL〜（？1）和0.017μgmL〜（？1），相对标准偏差（RSD）为7.4％ （n = 5）。制备的半胱氨酸功能化整体柱具有良好的富集能力，已成功用于实际样品中Cr（III）离子的测定。

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