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Endogenous nucleosides and nucleotides in biosamples are frequently highlighted as the most differential metabolites in recent metabolomics studies. We developed a rapid, sensitive, high-throughput and reliable quantitative method to simultaneously profile 20 endogenous nucleosides and nucleotides in cancer cell lines based on ultra-high performance liquid chromatography-electrospray tandem mass spectrometry...
Polyethyleneimine (PEI)-grafted and 3-acrylamidophenylboronic acid (AAPBA)-functionalized SiO 2 boronate affinity materials were synthesized for the selective enrichment of cis-diol-containing compounds. Characterization results of scanning electron microscopy, Fourier transform infrared spectroscopy, elemental analysis, zeta potential, and X-ray photoelectron spectroscopy indicated the successful...
A novel strategy for selectively adsorbing phospholipids (PLs) on titania-coated silica core–shell microspheres (TiO2/SiO2) was developed. The TiO2/SiO2 microspheres were prepared through water-vapor-induced internal hydrolysis and then characterized by SEM, UV–vis spectroscopy, X-ray diffraction, and measurements of Brunauer–Emmett–Teller surface area. Analyses showed that the titania layer was uniformly...
The use of dilute acid for mercury extraction from geological samples with microwave assisted heating was investigated. An orthogonal array design OA 16 (4 1 ×2 12 ) was applied to select the optimum conditions. The effects of the concentration of HNO 3 , the additions of HCl and H 2 S0 4 , the extraction time and their interactions were evaluated by...
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