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SYNTHESIS AND CHARACTERISTICS OF A CHELATING RESIN AS AN EXTRACTANT AND CHROMOGENIC REAGENT OF HEAVY METAL IONS IN SOLID PHASE EXTRACTION 被引量:4
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作者 张田林 Hui-min Ma +2 位作者 Jia-jia Wang Cai-yan Zhu Bing-bing Wang 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2013年第8期1108-1116,共9页
A new chelating resin (CPS-DMA-SABA) was synthesized with the chloromethylated crossqinked polystyrene porous beads (CPS) as raw materials, which were bonded with salicylidene-o-aminobenzoic acid (SABA) on the s... A new chelating resin (CPS-DMA-SABA) was synthesized with the chloromethylated crossqinked polystyrene porous beads (CPS) as raw materials, which were bonded with salicylidene-o-aminobenzoic acid (SABA) on the surface via a quaternary ammonium unit as a linker. The results showed that CPS-DMA-SABA would easily change into a zwitterionic chelating resin (CPS-DMA-SABZ) when washed with distilled water. CPS-DMA-SABA was characterized by elemental analysis, infrared spectra and thermo-gravimetric analysis. The ion sorption capacities of CPS-DMA-SABA were found to be 1916 μg/g for Zn2+ withpH at 4.5, 1620μg/g for Cu2+ with pH at 6.2, 1291 μg/g for Ni2+ withpH at 6.6 and 780 μg/g for Cr3+ withpH at 5.5, respectively. The experiments showed CPS-DMA-SABA also changed its color when meeting with the metal ion in the aqueous solution. As a consequence, CPS-DMA-SABA can not only be used as a solid phase extractant but also an indicator for confirming the heavy metal ion in solutions. 展开更多
关键词 Solid phase extractant zwitterionic chelating resin Heavy metal ion o-Aminobenzoic acid Synthesis.
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