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Updated: Mar 14, 2026
Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
Published on: August 7, 2016
Cadmium(II)-based metal-organic nanotubes as solid-phase microextraction coating for ultratrace-level analysis of
Wan-Ru Sheng1,2, Yue Chen1, Shan-Shan Wang1
1Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, 250014, China.
Abstract:
In this study, stable cadmium(II)-based metal-organic nanotubes (Cd-MONTs) were prepared and used as a coating material for solid-phase microextraction (SPME) of polychlorinated biphenyls (PCBs) from environmental water samples. The as-prepared Cd-MONT SPME coating material was characterized by thermal gravimetric analysis, scanning electron microscopy, and X-ray diffraction. The synthesized Cd-MONTs exhibited high thermal stability (385 °C) and excellent extraction performance toward PCBs. The important conditions were optimized systematically by the response surface method. Under the optimal conditions, the new fiber achieved high enrichment factors (938-3417), low limits of detection (1.80-8.73 pg L-1), and wide linearity (10-5000 pg L-1). The method developed was used in ultratrace-level analysis of PCBs in seawater samples, with satisfactory results for each sample.
