Magnetic solid phase microextraction on a microchip combined with electrothermal vaporization-inductively coupled plasma mass spectrometry for determination of Cd, Hg and Pb in cells

Magnetic solid-phase extraction using carbon nanotubes as sorbents: A review

“…In addition to the general benefits of M-SPE, the principal advantages of this approach are the miniaturization of the procedure, which in turn leads to a very low sample requirement, very low consumption of solvents and reagents, and good compatibility with biological samples (such as cells). In contrast, the preparation of microfluidic devices with several inlet and outlet flow channels, microvalves and magnets is highly specialized and involves soft lithography and rapid prototyping with polydimethylsilicone technology [70].…”

“…strategy is the on-chip M-SPE method [69][70][71]. In these cases, integrated microfluidic chips, which consist of reaction, mixing and extraction units along with two magnets, were designed and fabricated for M-SPE.…”

Magnetic solid phase extraction coupled with inductively coupled plasma mass spectrometry for the speciation of mercury in environmental water and human hair samples

“…The optimal operation conditions for ICP-MS are similar to that specified in Ref. [38], and 200 Hg was employed for the quantification. The pH values were controlled with a Mettler Toledo 320-S pH meter …”

“…MNPs was prepared and proved to be a very efficient adsorbent for mercury ions [37,38]. As well known, γ-MPTS is a mercapto group-containing coupling reagent, which has a good affinity towards mercury.…”

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

“…8 Recent years have seen an emerging trend involving the incorporation of magnetic nanoparticles (MNPs) and specific chemicals that contain functional groups capable of the efficient retention of metal ions. In contrast to commercial resins, the MNPs are modified with compounds such as γ-mercaptopropyltrimethoxysilane (γ-MPTS) 9 and aminobenzyl ethylenediaminetetraacetic acid (ABEDTA) 10 after which they are packed into the microchannels with the aid of an external magnetic field to achieve the selective extraction of metal ions.…”