In-tube solid-phase microextraction with a hybrid monolithic column for the preconcentration of ultra-trace metals prior to simultaneous determination by ICP-MS

Fei, Jia-jun; Zhao, Lu; Wu, Xiaohong; Cui, Xiao‐Bing; Min, Hong Ki; Lian, Hong-zhen; Chen, Yijun

doi:10.1007/s00604-020-04329-0

Cited by 26 publications

(1 citation statement)

References 33 publications

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“…Normally, human biological samples containing multiple components require a pretreatment procedure to isolate target DNA before detection . In recent years, solid-phase extraction (SPE), solid-phase microextraction, magnetic solid-phase extraction (MSPE), − and liquid–liquid extraction have been utilized for DNA extraction . As a novel SPE technology, MSPE considerably simplifies the extraction procedure with simple instrument and high efficiency .…”

Section: Introductionmentioning

confidence: 99%

Postsynthetic Modification of the Magnetic Zirconium–Organic Framework for Efficient and Rapid Solid-Phase Extraction of DNA

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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In recent years, several approaches have been applied to modify metal–organic frameworks (MOFs) owing to their excellent structural tunability such as higher extraction efficiency than that of primitive crystals. Herein, Zr-based MOFs (UiO-66-NH2) with a suitable size modulated by acetic acid were successfully synthesized for effective DNA extraction. The bonding conformations and adsorption mechanism indicated a high affinity between UiO-66-NH2 and the DNA molecules. Furthermore, Fe3O4 nanoparticles were immobilized on the UiO-66-NH2 surface to allow MOFs with magnetism. The magnetic zirconium–organic framework (MZMOF) retained the intact structure of MOFs and simplified subsequent extraction operations. In the DNA recovery investigation, MZMOF showed high recovery efficiency for both short-stranded DNA (90.4%) and pseudovirus DNA (95.1%). In addition, it showed superior DNA extraction efficiency from plasma (57.6%) and swab preservation solution (86.5%). The prepared MZMOF was employed for highly specific extraction of viral DNA and cfDNA from samples. To further simplify the extraction process, MZMOF was applied to immiscible phase filtration assisted by a surface tension (IFAST) chip for facilitating rapid DNA extraction with sensitive point-of-care testing. The developed MZMOF-based extraction method has significant potential for increasing the demand for rapid and efficient nucleic acid extraction.

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