11 results about "Naproxenum" patented technology

The invention particularly relates to a method for determining a reaction rate constant of tetravalent iron and organic pollutants by using a chemiluminescence method, and belongs to the technical field of water quality detection. According to the method, on the basis of a chemiluminescence reaction between Fe (IV) and naproxen (NAP), a target organic pollutant (TrOC) is introduced, the quenching effect of the target organic pollutant on a chemiluminescence signal is measured, and a competitive kinetic model between the chemiluminescence quenching capacity (CLQC) and a secondary reaction rate constant (kFe (IV), TrOC) of Fe (IV) on the target pollutant is constructed. According to the method, the concentration of Fe (IV) does not need to be monitored in real time, and the reaction activity between Fe (IV) and various pollutants can be directly and rapidly measured only by comparing the intensity change of the chemiluminescence signals when the target pollutants exist and do not exist.

The present application relates to a kind of carbonized iron and nitrogen coordination iron co-doped nitrogen and graphene carbon material and preparation method and application, with six hydrated ferric chloride as iron source, with chitin as nitrogen, carbon source. By simple one-step method, after mixing, calcination, grinding way, carbonized iron and nitrogen coordination iron co-doped nitrogen and graphene carbon material is synthesized.The material prepared by the present application presents two-dimensional layered structure, after adding potassium hydrogen peroxodisulfate oxidant, the material can completely remove the active pharmaceutical ingredient naphthyl in water in a short time.Naproxen.The synthesis method proposed in the present application is simple and easy to operate, and the material performance is excellent, which can provide a new design idea for nitrogen coordination iron nanomaterial supported by carbon material, and be applied to the remediation of contaminated water.

The invention discloses a sulfur-doped bi-metal cobalt cerium oxide Fenton-like catalyst and a preparation method and application thereof.The sulfur-doped bi-metal cobalt cerium oxide Fenton-like catalyst is a sulfur-doped cobalt cerium composite oxide, and in the sulfur-doped bi-metal cobalt cerium oxide Fenton-like catalyst, the Co element content is 20-24 wt%, the Ce element content is 50-56 wt%, the O element content is 20-22 wt%, and the balance is a carrier. The content of the S element is 1-4 wt%. According to the sulfur-doped bimetallic cobalt cerium oxide Fenton-like catalyst disclosed by the invention, peroxyacetic acid is activated to generate organic oxygen free radicals, and 90.5% of moxifloxacin can be degraded within 15 minutes; and the composite material has a good degradation effect on pollutants of polycyclic aromatic compounds such as ofloxacin, gatifloxacin, norfloxacin, tetracycline, o-nitrophenol, naproxen and the like.

This invention relates to the fields of environmental and chemical technology, specifically to a nitrogen-modified activated carbon adsorbent material, its preparation method, and its applications. The invention employs an ammonium chloride solution impregnation method combined with high-temperature activation under a nitrogen inert atmosphere to modify the surface of pretreated granular activated carbon, increasing the content of basic groups on the activated carbon surface, thus preparing a nitrogen-modified activated carbon adsorbent material. Experimental results show that the prepared nitrogen-modified activated carbon exhibits high adsorption efficiency for carboxylic acid drug pollutants such as naproxen, ibuprofen, and diclofenac. The preparation conditions of this invention are mild, the operation steps are simple, the required reagents are inexpensive, and the safety is relatively high, making it suitable for the treatment of drinking water, sewage, and medical wastewater.

This invention discloses a chiral covalent organic framework composite membrane prepared by in-situ growth and its applications. This invention uses [NALC] as a reference. X -TAPB-DVA COF S As a functionalized material, a chiral covalent organic framework composite membrane was prepared by a secondary in-situ growth method using terephthalaldehyde (PAD) as the linker and 1,3,5-tris(4-aminophenyl)benzene (TAPB) as the nucleation site. This chiral covalent organic framework composite membrane can resolve enantiomers of mandelic acid, warfarin, naproxen, and ibuprofen, exhibiting a wide resolution range and stable resolution performance.

This invention discloses a method for preparing a cyclodextrin-ammonium acetate-naproxen ternary inclusion complex, comprising the following steps: mixing β-cyclodextrin, naproxen, and ammonium acetate in a molar ratio of 0.8-1.3:0.9-1.1:0.8-2.5 with a solvent; stirring the resulting mixture at 35-45°C for 0.5-2 hours; and then removing the solvent by evaporation, standing, and freeze-drying to obtain the ternary complex. This invention prepares a ternary inclusion complex using β-cyclodextrin, naproxen, and ammonium acetate, which significantly improves drug stability and water solubility, thus helping to enhance the bioavailability of naproxen and expand its application areas.

Here described is a pharmaceutical composition comprising a fill material comprising: a salt of one or more pharmaceutically active agents; and a lipid-based water-soluble surfactant. The fill material may further comprise a lipid-based oil and wetting agent. The lipid-based oil may be medium-chain triglycerides and the wetting agent may be lecithin.

The application relates to a drug controlled release system with a chiral drug selective loading function, a preparation method and application thereof, and belongs to the technical field of biological medicines. The drug controlled release system with the chiral drug selective loading function is prepared into a supermolecular hydrogel selective loading system after a gel factor is self-assembled into a supermolecular hydrogel, and chiral drugs with the same optical rotation as the supermolecular hydrogel are loaded into a three-dimensional network structure of the supermolecular hydrogel. The drug controlled release system with the chiral drug selective loading function prepared by the application can realize selective loading of different configurations of naproxen, and can realize controlled release of S-naproxen under alkaline conditions. The chiral selective controlled release system is simple in preparation, high in feasibility, and can be widely applied to the field of biological medicines.

The application discloses a method for degrading naproxen in water by using a divalent manganese / percarbonate / tetraacetylethylenediamine system and relates to a method for degrading naproxen in water by using a high-level oxidation technology. The method comprises the following steps: adding percarbonate and tetraacetylethylenediamine into water to be treated containing naproxen, adjusting the pH value of the water to be treated to 5-10, adding divalent manganese for treatment, and stirring and reacting for 10-60 minutes at a water temperature of 5-35 DEG C. The method has the advantages of fast generation speed of active species, high removal efficiency of organic pollutants, high utilization rate of oxidants, no need to increase other treatment equipment, low one-time investment cost, low operation cost, simple operation, wide application range, green environmental protection and the like, and has a wide application prospect in the treatment of organic wastewater, such as medical wastewater and aquaculture wastewater, containing naproxen.