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Abstract

Weak anion exchange sorbent based on cross-linked polystyrene with primary secondary amine group was prepared by substitution nucleophilic reaction (SN2) between methylene chloride group and 1,2-ethylene diamine. The effect of factors, namely the weight ratio of amine over methylene chloride, reaction time and temperature on nitrogen percentage were studied using experimental design approach. The amination yield rose as all of factors increased but was reduced while both temperature and time increased simultaneously. Nitrogen percentage of the products were varied from 4.0% to 6.3%. Sorbents with predicted capacity of 4.5%, 5.0%, 6.3%, and 6.5% were synthesized. The results showed that the actual capacities of the products were close to the predictions, especially for those in the experimental domain, indicating a good model that can be used to prepare sorbents of any desired capacity. The sorbent application ability of multiresidue pesticides analysis in food were initially investigated through both aspects: interference elimination and analyte content conservation.



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Issue: Vol 2 No 2 (2018)
Page No.: 47-53
Published: May 16, 2019
Section: Original Research
DOI: https://doi.org/10.32508/stdjns.v2i2.733

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Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Huynh, C., Vo, V., Nguyen, N., & Nguyen, M. (2019). Primary and secondary amine material based on crosslinked polystyrene: synthesis and initial application for multiresidue pesticides analysis. Science & Technology Development Journal: Natural Sciences, 2(2), 47-53. https://doi.org/https://doi.org/10.32508/stdjns.v2i2.733

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