3 results about "Paper chromatography" patented technology

This invention relates to a method for ultra-high sensitivity and specific naked-eye detection of trace aromatic compounds. The method utilizes the long afterglow induced by the specific interaction between the analyte and a matrix as the output signal to achieve naked-eye detection of the analyte. The aromatic compounds are aromatic pollutants and aromatic organic metabolites. This invention utilizes the organic long afterglow induced by mixing the analyte G with the host molecule H through methods such as heating and melting, solvent evaporation and crystallization, matrix adsorption, and paper chromatography as a monitoring signal to achieve ultra-high sensitivity and specific naked-eye detection of trace aromatic compounds. The afterglow induced by the analyte G is highly dependent on the type and content of the analyte and matrix, which gives this detection method extremely high sensitivity and selectivity. The method is simple to operate, rapid, visible to the naked eye, requires inexpensive and readily available materials, and provides stable results.

The utility model relates to an amino acid paper chromatography experiment appliance, which belongs to the technical field of amino acid chromatography experiments and comprises a chromatography sample application scale, a chromatography developing vessel, a chromatography liquid small groove, a cylindrical filter paper core and circular chromatography filter paper. And the outer side is hollowed out for drawing the front edge of chromatographic liquid. According to the utility model, the design of the chromatography sample application scale helps an operator to draw a starting line of a sample application original point, a finishing line of chromatography expansion and measure the distance between the sample application original point and an amino acid color spot, so that the adverse effects of inclination and tilting of filter paper on an experiment in the traditional chromatography process are avoided from the source in the horizontal chromatography direction from the center to the circumference; the experiment efficiency and success rate are greatly improved, the chromatography vessel is smaller in size compared with a traditional chromatography device, the use amount of chromatography liquid is effectively reduced through the design of the chromatography liquid small groove, and the device is more environmentally friendly during use.

A multichannel closed chromatographic analysis experimental device on inorganic paper relates to a chromatographic analysis experimental device, a device main body comprises four groups of independent separation units, a sealing cover and a double-layer protection rubber plug are arranged at the top, and a manual pipette and an electric diversion system are connected at the bottom. Chromatographic paper is folded into a hexagonal column to be placed in the unit, and synchronous treatment of four samples is achieved in cooperation with a sealing structure. A long suction tube rubber head pressing type waste liquid recovery or electric circulating pump flow guide treatment is adopted to form a closed waste liquid collection system. Through actual measurement, the device reduces the volatilization amount of ammonia water by 87%, and the time consumption of a single experiment is reduced to 1 / 3 of that of a traditional method. The method can be widely applied to paper chromatography analysis experiments in the fields of chemistry, biology and the like, and is particularly suitable for teaching and scientific research scenes requiring batch sample processing.