کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7609350 | 1493396 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and chromatographic characteristics of iminodisuccinic acid-functionalized silica stationary phase
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
In this study, we developed a multifunctional chromatographic medium by using iminodisuccinic acid (IDS) as ligand, γ-glycidoxypropyltrimethoxysilane (γ-GLDP) as spacer arm and silica as matrix. The medium was characterized by fourier transform infrared spectrometry (FT-IR). Binding capacity of IDS on chromatographic medium was determined by potentiometric titration. The effect of mass ratios (w/w) between silica and IDS on the medium synthesis was discussed. The optimal ratio of matrix, spacer arm and ligand was 1.5 g: 2.0 mL: 4.6 g. Based on different chromatographic modes, protein mixtures of bovine serum albumin, ribonuclease and lysozyme were successfully separated with IDS-Silica column and IDS-Cu(II)-Silica column, respectively. To examine metal chelating behavior of IDS-Silica stationary phase, optimal geometries and related parameters of complexes formed by IDS with Fe3+, Cu2+, Ni2+, Zn2+, Co2+ and Ca2+ were achieved by quantum computing. The stabilities of the complexes were predicted according to the results of theoretical calculation. Sorption capacities of IDS-Silica stationary phase for metal ions were determined by using offline frontal chromatography (FC) combined with inductively coupled plasma atomic emission spectrometry (ICP-AES). A good agreement was found between simulating results and experimental observations. The order of chelating strength of IDS-Silica medium for metal ions was Fe3+ > Cu2+ > Ni2+ > Zn2+ > Co2+ > Ca2+. Compared with IDA-Silica, Asp-Silica and Glu-Silica stationary phases, IDS-Silica displayed a stronger chelating property for metal ion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1530, 29 December 2017, Pages 120-128
Journal: Journal of Chromatography A - Volume 1530, 29 December 2017, Pages 120-128
نویسندگان
Bin Chen, Ning Zhang, Chen Li, Rong Li, An Fan,