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Reproducible preparation of low-capacity anion-exchange resins
Affiliation:1. Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, PR China;2. Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai 810001, PR China;3. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China;4. College of Food Science and Engineering, Shandong Agricultural University, Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, Taian 271018, PR China;5. Hospital of University, Qufu Normal University, Qufu, Shandong 273165, PR China;1. College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China;2. Sweetpotato Research Institute, Chinese Academy of Agricultural Sciences, Xuzhou 221131, China;3. College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
Abstract:A procedure is described for the reproducible preparation of very low-capacity strong-base anion-exchange resins. The resins are intended for use in single column ion chromatography and range in capacity from less than 0.005 meq/g to 0.16 meq/g when XAD-1 is used as a substrate. Capacities can typically be reproduced to within a few microequivalents per gram on successive batches. It is believed that the ion-exchange groups are introduced on the surface of the resin.
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