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Highly Efficient Selective Extraction of Chlorpyrifos Residues from Apples by Magnetic Microporous Molecularly Imprinted Polymer Prepared by Reversible Addition–Fragmentation Chain Transfer Surface Polymerization
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2023-01-09 , DOI: 10.1021/acs.jafc.2c06236 Yuewei Zhang 1 , Liju Tan 1 , Kunpeng Wang 1 , Na Wang 1 , Jiangtao Wang 1
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2023-01-09 , DOI: 10.1021/acs.jafc.2c06236 Yuewei Zhang 1 , Liju Tan 1 , Kunpeng Wang 1 , Na Wang 1 , Jiangtao Wang 1
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Chlorpyrifos, as a moderate toxic organophosphorus pesticide, is prone to lingering in the environment and cannot be monitored easily. In this study, a magnetic, microporous, molecularly imprinted polymer was synthesized by using the reversible addition–fragmentation chain transfer polymerization method. The synthesized materials were properly characterized in terms of morphology, selectivity, and sorption capacity and used as sorbents for magnetic solid phase extraction for the selective determination of chlorpyrifos in apple samples. Results showed that the magnetic microporous molecularly imprinted materials were rough and porous spheres at an average size of 5 nm. The materials were highly selective toward chlorpyrifos with a superior sorption capacity of 167.99 mg·g–1 and were resistant to the interference of competitive pollutants. After optimization, the recoveries of chlorpyrifos reached 96.2–106.5%, and the detection limit was 0.028 μg·kg−1 by HPLC. Based on these analytical validation results, the developed method could be effective at determining chlorpyrifos in apples.
中文翻译：
可逆加成-断裂链转移表面聚合制备的磁性微孔分子印迹聚合物高效选择性提取苹果毒死蜱残留
毒死蜱作为中毒有机磷农药，易在环境中滞留，不易监测。本研究采用可逆加成-断裂链转移聚合法合成了一种磁性微孔分子印迹聚合物。合成的材料在形态、选择性和吸附能力方面得到了适当的表征，并用作磁性固相萃取的吸附剂，用于选择性测定苹果样品中的毒死蜱。结果表明，磁性微孔分子印迹材料为平均粒径为5 nm的粗糙多孔球体。该材料对毒死蜱具有高选择性，吸附能力高达 167.99 mg·g –1并能抵抗竞争性污染物的干扰。经优化后，毒死蜱的回收率达到96.2%～106.5%，HPLC检测限为0.028 μg·kg −1。基于这些分析验证结果，开发的方法可有效测定苹果中的毒死蜱。
更新日期：2023-01-09
中文翻译：
可逆加成-断裂链转移表面聚合制备的磁性微孔分子印迹聚合物高效选择性提取苹果毒死蜱残留
毒死蜱作为中毒有机磷农药，易在环境中滞留，不易监测。本研究采用可逆加成-断裂链转移聚合法合成了一种磁性微孔分子印迹聚合物。合成的材料在形态、选择性和吸附能力方面得到了适当的表征，并用作磁性固相萃取的吸附剂，用于选择性测定苹果样品中的毒死蜱。结果表明，磁性微孔分子印迹材料为平均粒径为5 nm的粗糙多孔球体。该材料对毒死蜱具有高选择性，吸附能力高达 167.99 mg·g –1并能抵抗竞争性污染物的干扰。经优化后，毒死蜱的回收率达到96.2%～106.5%，HPLC检测限为0.028 μg·kg −1。基于这些分析验证结果，开发的方法可有效测定苹果中的毒死蜱。
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