4 results about "Norfloxacin" patented technology

A method for preparing and applying copper chloride-modified vinegar residue biochar, belonging to the field of wastewater treatment technology, is disclosed. The method involves: weighing 1.0000 g ± 0.0005 g of vinegar residue powder and adding it to 40 mL of ultrapure water, dispersing it thoroughly under magnetic stirring; then adding 0.5000 g of CuCl₂·2H₂O, mixing, and continuously stirring magnetically at room temperature for 24 h to allow the CuCl₂ to form a biochar. 2+ The mixture is thoroughly impregnated with vinegar residue to form a mixture. The mixture is then dried in an oven and transferred to a tube furnace. Inside the tube furnace, under a N₂ atmosphere, the temperature is increased to 600°C at 8°C / min and pyrolyzed for 120 min. After cooling, the product is removed, ground, and then copper chloride-modified vinegar residue biochar is obtained. This invention features a simple process flow, controllable operating conditions, low equipment requirements, good repeatability, and suitability for large-scale preparation. The obtained copper chloride-modified vinegar residue biochar exhibits excellent adsorption and degradation performance of organic pollutants, particularly efficient degradation and removal of quinolone antibiotics such as ciprofloxacin and norfloxacin.

This invention relates to the field of photocatalysis technology, and more particularly to a Haematococcus pluvialis / CdS composite material, its preparation method, and its applications. The Haematococcus pluvialis / CdS composite material provided by this invention comprises Haematococcus pluvialis and nano-CdS coated on the surface of the Haematococcus pluvialis; the mass content of astaxanthin in the Haematococcus pluvialis is 1-10%. Haematococcus pluvialis contains astaxanthin, which can enhance the ability of CdS to capture photons within the visible light wavelength range, thus acting as a dye sensitizer, while simultaneously inhibiting the recombination of photogenerated electrons / holes and improving the transport and transfer efficiency of photogenerated electrons. Therefore, compared with CdS alone, the Haematococcus pluvialis / CdS composite material exhibits better visible light photocatalytic activity. Results show that the Haematococcus pluvialis / CdS composite material has good visible light photocatalytic performance, achieving a removal rate of 84.5% for the recalcitrant norfloxacin within 60 min, and exhibits good cycling stability.

The application discloses a method for degrading organic pollutants by using cobalt ion activated persulfate with reinforced waste eggshells, and belongs to the technical field of environmental functional materials and waste resource utilization. The method comprises the following steps: mixing waste eggshell powder and a cobalt ion solution in water, stirring, and carrying out in-situ complexation; adding organic pollutants to the mixed solution after complexation, and then adding per monosulfate to degrade the organic pollutants. The application utilizes the synergistic effect of the natural alkaline microenvironment spontaneously formed by the waste eggshells in the aqueous solution and the homogeneous cobalt ions, fixes the cobalt ions to avoid secondary pollution, promotes the reduction of Co 3+ to Co 2+ by the alkaline microenvironment, and has excellent degradation effect on a plurality of organic pollutants such as norfloxacin and rhodamine B, has extremely strong practical water treatment application potential and broad spectrum applicability.

The present application relates to the technical field of pharmaceutical analysis, in particular to a method for resolving and detecting norfloxacin enantiomers. The method adopts high performance liquid chromatography to resolve sample solutions containing norfloxacin enantiomers and detects with a diode array detector; wherein the high performance liquid chromatography adopts an Agilent ZORBAX Eclipse XDB-C8 chromatographic column and uses L-isoleucine copper acetate as a chiral mobile phase additive. The above method realizes the resolution of norfloxacin enantiomers, and the analysis time is only 22 min, which is shortened by nearly half of the analysis time, the resolution is much greater than 1.5, and the resolution and determination requirements are met. The method is simple, economical and practical, has good linear relationship, precision and sensitivity, and can be used for the resolution and quality control of norfloxacin enantiomers.