Magnetism-reinforced in-tube solid phase microextraction for the online determination of trace heavy metal ions in complex samples

An efficient electrochemical biosensor for the detection of heavy metal lead in food based on magnetic separation strategy and Y-DNA structure

“…To assess the level of Pb 2+ contamination, many analytical methods, including atomic absorption spectrometry (AAS), 9 high-performance liquid chromatography (HPLC), 10 and immunoassay-strip technique (GICA). 11 These assays require expensive and sophisticated instruments and time-consuming sample pre-treatment, limiting their practical application.…”

Fabrication of functional group-rich monoliths for magnetic field-assisted in-tube solid phase microextraction of inorganic selenium species in water samples followed by online chromatographic determination

“…MFA/IT-SPME has shown wide application potentials in the efficient trapping of organic pollutants 23 and heavy metal ions. 25…”

“…MFA/IT-SPME has shown wide application potentials in the efficient trapping of organic pollutants 23 and heavy metal ions. 25 Based on the merits of MFA/IT-SPME and the analytical demands of Se(IV) and Se(VI), in the present study, MFA/ IT-SPME was introduced to efficiently capture selenium, and then online coupled with high performance liquid chromatography (HPLC) equipped with a diode array detector (DAD) to perform speciation analysis of inorganic selenium. For this purpose, Se(IV) was reacted with o-phenylenediamine (OPA) to form diamagnetic coordination compound which met the requirements of magnetic microfluidics principles, chromatographic separation and UV detection.…”

Development of magnetism‐assisted in‐tube solid phase microextraction of phenolic acids in fruit juices prior to high‐performance liquid chromatography quantification

“…The magnetic IT-SPME dissolved the dilemma of low extraction efficiency existing in IT-SPME, but the coating was unstable and the extraction capacity was unsatisfactory. In our previous studies [24][25][26][27] Five studied PAs including CA (≥96%), VA (≥97%), FLA (99%), DPA (98%), and HPA (98%) were obtained from ANPLE Laboratory Technologies (Shanghai, China). Supporting Information Table 1 describes the related properties of investigated PAs.…”