Shandong Province Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, PR China; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu Normal University, Qufu, PR China.
Shandong Province Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, PR China; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu Normal University, Qufu, PR China.
Food Chem. 2019 Mar 30;277:407-413. doi: 10.1016/j.foodchem.2018.10.132. Epub 2018 Oct 29.
A new cationic gemini surfactant-resorcinol/formaldehyde resin was designed and synthesized. Cationic gemini surfactant was introduced into the resorcinol/formaldehyde resin for the first time and led to the retention of negatively charged endocrine disrupting compounds (EDCs) through electrostatic interactions, hydrogen bonding and π-π interactions. The synthesized material showed good performance in the dispersive micro-solid phase extraction (D-μ-SPE) of EDCs such as alkylphenol and phenoxy acid herbicides from food packaging migrants. Extraction parameters such as pH, adsorbent dose, extraction time and salting out effect were optimized. The limits of detections were in the range of 0.5-0.8 ng/mL, and the recoveries were in the range of 90-100%. The developed method was applied to the analysis of EDCs from food contacting materials migrants with pentachlorophenol, 2,4-dichlorophenoxyacetic acid and bisphenol A detected in the concentration range of 0.2-1.2 mg/kg. It also showed great potential in the D-μ-SPE of other compounds with negative charge or high hydrophobicity.
一种新型的阳离子双子表面活性剂-间苯二酚/甲醛树脂被设计并合成。阳离子双子表面活性剂首次被引入到间苯二酚/甲醛树脂中，通过静电相互作用、氢键和π-π相互作用保留了带负电荷的内分泌干扰化合物（EDCs）。该合成材料在食品包装迁移物中烷基酚和苯氧酸除草剂等 EDCs 的分散微固相萃取（D-μ-SPE）中表现出良好的性能。优化了 pH 值、吸附剂用量、萃取时间和盐析效应等萃取参数。检出限范围为 0.5-0.8ng/mL，回收率范围为 90-100%。该方法应用于食品接触材料迁移物中五氯苯酚、2,4-二氯苯氧乙酸和双酚 A 等 EDCs 的分析，检测浓度范围为 0.2-1.2mg/kg。它在带负电荷或高疏水性的其他化合物的 D-μ-SPE 中也显示出很大的潜力。
