Mokhodoeva Olga, Maksimova Valeriia, Danilova Tatiana, Trofimov Denis, Krivenko Artem, Shkinev Valery
Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 19 Kosygin Str, 119991, Moscow, Russia.
Mikrochim Acta. 2025 Apr 8;192(5):285. doi: 10.1007/s00604-025-07116-x.
The emerging technologies based on magnetic levitation and 3D printing manufacturing were utilized to create a sorbent retention platform as an alternative to traditional packed columns. The magnetic nanoscale sorbent was suspended in the aqueous solution in a 3D printed sorption cell placed between two permanent magnets. Simulations of hydrodynamic fluid and magnetic field were carried out to optimize the configuration and positioning of the sorption cell. The developed platform ensures uniform distribution of the sorbent in the cell's volume and retention under dynamic conditions. The efficiency of palladium solid-phase extraction in a flow mode was demonstrated using modified magnetite nanoparticles. A high concentration factor can be achieved using the spiral shape of the cell with 50-100 mg of the suspended sorbent. The results of the spectrometric determination of trace amounts of palladium in natural water are given. An automated system for environmental analysis based on the proposed platform is promising.
基于磁悬浮和3D打印制造的新兴技术被用于创建一个吸附剂保留平台，以替代传统的填充柱。磁性纳米级吸附剂悬浮在置于两个永磁体之间的3D打印吸附池中水溶液中。进行了流体动力学流体和磁场模拟，以优化吸附池的配置和定位。所开发的平台确保吸附剂在池体积内均匀分布，并在动态条件下保留。使用改性磁铁矿纳米颗粒证明了流动模式下钯固相萃取的效率。使用含有50-100毫克悬浮吸附剂的螺旋形池可实现高浓缩系数。给出了天然水中痕量钯的光谱测定结果。基于所提出平台的环境分析自动化系统很有前景。
