3 results about "Diquat" patented technology

The application discloses a method for determining quaternary ammonium salt pesticides in blood by using liquid chromatography mass spectrometry, which draws a standard working curve of whole blood (plasma, serum) matrix by liquid chromatography mass spectrometry analysis, obtains peak areas of target quantitative ion peaks and peak areas of internal standard quantitative ion peaks of different concentrations of paraquat, diquat, wild wheat, chlormequat, and mepiquat, and then draws a standard working curve; and under the same conditions, liquid chromatography mass spectrometry analysis is carried out on whole blood sample liquid, peak areas of target quantitative ion peaks and peak areas of internal standard quantitative ion peaks in the whole blood sample liquid are obtained at the same time, and the content of each quaternary ammonium salt pesticide is calculated according to the standard working curve. The application can simply, quickly and simultaneously detect the content of five kinds of quaternary ammonium salt pesticides in whole blood of poisoned patients, and has the characteristics of simplicity, accuracy, good repeatability and high sensitivity.

The application provides a kind of SSZ-112 zeolite molecular sieve and its preparation method and application, it is related to the technical field of molecular sieve.The SSZ-112 zeolite molecular sieve (AFT topology) synthesized by the new double organic template system of Et6-diquat-n dibromide (n=2~10) and bromo 1-propyl-1-methyl pyrrole as organic template agent has high crystallinity, and no amorphous.The SSZ-112 zeolite molecular sieve prepared by the application has excellent carbon dioxide selective adsorption separation performance, and has a broad prospect in the field of flue gas carbon dioxide capture application.Meanwhile, the SSZ-112 zeolite molecular sieve prepared by the application also has excellent catalytic performance in the field of denitration catalysis.

The application discloses a kind of Au@4-MBA@Ag surface-enhanced Raman probe preparation methods, belong to nanomaterial and spectroscopic detection technical field.The probe is Au nanoparticle as core, 4-mercapto benzoic acid as intermediate layer, outside coating Ag shell, through the Au-S bond of 4-MBA is fixed in gold core, carboxyl induces Ag+ Coordination deposition, realize Ag shell controllable growth, form core-shell structure.Preparation contains Au nanoparticle, Au@4-MBA nanoparticle, Au@4-MBA@Ag probe three-step core technology, reaction condition is mild, process is easy to control.The probe uses Ag shell plasmon resonance to form electromagnetic enhancement zone, combined with the adsorption enrichment effect of 4-MBA, realize trace detection of paraquat, diquat and its free radical such as dipyridyl herbicide, with high sensitivity, high selectivity and good repeatability, detection limit is low and the requirement of sample pretreatment is low, can also be extended to other pesticide and pollutant detection, suitable for environmental and food safety on-site rapid detection.