Temperature and magnetic dual responsive restricted access material for the extraction of malachite green from crucian and shrimp samples
作者:Yuanyuan Li、Xiangzhi Feng、Yulong Ma、Tong Chen、Wenxin Ji、Xiaoxia Ma、Yang Chen、Hong Xu
DOI:10.1039/d0nj00230e
日期:——
enhance recognition capability and extraction efficiency for MG. When the temperature is above the LCST, the adsorbent shows hydrophilic to hydrophobic surface property alterations, leading to a gradually weakening interaction between MG and the adsorbent material, so the captured MG molecules were released. The smart material and aqueous solution achieve separation using a magnet within 2 min. The main
开发了一种基于磁性氧化石墨烯(MGO)和温度响应聚合物刷的新型受限访问材料(RAM),并将其用作孔雀石绿(MG)磁性固相萃取(MSPE)的吸附剂。仅通过改变溶液温度,就可以在获得的智能材料上实现MG的吸附和解吸。在20°C下,低于聚乙烯(N-异丙基丙烯酰胺)(PNIPAAM),温度响应的聚合物链膨胀并处于亲水状态,可以改善传质和结合能力,并进一步提高对MG的识别能力和提取效率。当温度高于LCST时,吸附剂表现出亲水性至疏水性的表面性质变化,导致MG与吸附剂材料之间的相互作用逐渐减弱,因此释放了捕获的MG分子。智能材料和水溶液可在2分钟内使用磁铁实现分离。优化了影响萃取效率的主要参数。结合紫外可见分光光度计,开发了一种有效的MG分析方法。在实际样本分析中,cru鱼和青虾的平均回收率及其相对标准偏差(RSD%)分别为79.7–90.1(3.8–5.3%)和73.6–81.2(3.7–4.3%)