2results about How to "High carbon content" patented technology

This invention belongs to the technical field of bactericide residue analysis and determination in plant-derived foods, specifically relating to a method for detecting isobutylethoxyquinoline and its metabolites in plant-derived foods. The method includes extraction with acetonitrile under citrate conditions, followed by purification with C18 (25 mg), PAX (25 mg), and XFM64 (nitrogen-doped multi-walled carbon nanotubes, 10 mg) adsorbents. Chromatographic separation is performed using a C18 column with methanol-2 mmol / L ammonium acetate (containing 0.1% formic acid) as the mobile phase, isocratic elution at a flow rate of 0.40 mL / min, electrospray ionization (ESI+), and detection in multiple reaction monitoring (MRM) mode. This invention is simple to operate, has high pretreatment efficiency, and its precision and recovery rate meet the regulatory residue limit monitoring requirements. It is suitable for the simultaneous determination of isobutylethoxyquinoline and its metabolites in plant-derived foods.

This invention belongs to the field of battery manufacturing technology, specifically relating to a wood-based hard carbon anode material, its preparation method, and its application in sodium-ion batteries. Addressing the high cost of hard carbon material precursors, this invention proposes a method for preparing a wood-based hard carbon anode material, comprising: using natural wood particles as a carbon source precursor, first subjecting them to hydrothermal treatment in a strong acid solution containing hydrogen peroxide, followed by high-temperature carbonization to obtain the wood-based hard carbon anode material. This invention uses natural wood as a raw material, eliminating the need for pore-blocking agents, and thus forming a wood-based hard carbon anode material with a closed-cell structure, providing a better environment for sodium ion insertion and extraction.