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Considering the significance and urgency for the recognition and sensing of anions specifically, especially those of biological relevance, herein, a simple and reliable colorimetric iodide sensor that based on pH-dependent interaction of silver nanoparticles (AgNPs) and H 2 O 2 was developed. In acidic medium, AgNPs reacted with H 2 O 2 to produce Ag + and powerful...
A sensitive and simple method for the determination of melamine (MA) was developed based on the fluorescence enhancement effect of MA for thioglycolic acid-capped (TGA-capped) CdS quantum dots (QDs). Under optimum conditions, a good linear relationship was obtained from 2.0×10 −9 to 5.0×10 −5 M. The detection limit was 1.0×10 −9 M, which was much lower than the safety limit...
In this paper, a nanoliter droplet array based on enzymatic stem-loop probes ligation and SYBR Green real-time PCR for quantification of microRNA was developed. By employing T4 RNA ligase 2 instead of T4 DNA ligase, we designed simplified stem-loop probes to perform microRNA-templated DNA ligation and reduced the non-specific ligation of T4 DNA ligase. SYBR green I dye was employed instead of TaqMan...
In this paper, a glass microchip-based emitter with a low-melting-point alloy (LMA) microelectrode and a monolithic tip for electrospray ionization mass spectrometry (ESI-MS) was described. So far, the fabrication of metal microelectrode achieving direct electrical contact in the microchannel of glass chip is still a challenge. A novel fabrication approach for LMA microelectrode in the glass chip...
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