4results about How to "Convenient Quantitative Detection" patented technology

This invention belongs to the field of metallurgical analysis technology, specifically relating to a method for determining the silicon content in manganese-silicon alloys using spectrophotometry. The method involves decomposing the manganese-silicon alloy sample with acid to convert the silicon into soluble silicic acid or fluorosilicic acid. A masking agent is added to eliminate the influence of interfering ions, resulting in a clear test solution. This solution is then reacted with a colorimetric reagent to generate a colored complex with characteristic absorption in the visible light region, facilitating quantitative detection by a spectrophotometer. The absorbance of the colorimetric solution is measured at a characteristic wavelength to obtain an optical signal positively correlated with the silicon content. Based on a pre-established linear regression equation, the measured absorbance value is converted into the mass fraction of silicon, thus achieving quantitative analysis of the silicon content. The method provided in this application offers significantly shorter processing time for a single sample compared to traditional titration methods, is simpler to operate, and reduces human error.

The application discloses a colorimetric copper ion fluorescent probe and synthesis and application thereof, which has a fluorophore and a copper ion recognition group, wherein the copper ion recognition group is one of commercial drugs of norfloxacin, levofloxacin, moxifloxacin and gatifloxacin. The copper ion fluorescent probe can be used for qualitative and colorimetric detection of copper ions, and is especially used in the fields of solution / cell / tissue / living body imaging, biological labeling or sensing.

This utility model relates to the field of separation membranes, and particularly to a sample testing device for separation membrane research and development. It includes a testing chamber with an insertion interface at the center of its top outer wall. A fixing structure is installed at the insertion interface, and partition plates are installed on the inner wall of the testing chamber at both ends of the fixing structure. The fixing structure includes a fixing frame, a placement groove on one side of the outer wall of the fixing frame, a pressing frame slidably connected in the placement groove, fastening grooves equidistantly located on one side of the outer wall of the fixing frame, and fastening protrusions equidistantly welded to the outer wall of the pressing frame at the fastening grooves. In this utility model, the detection gas enters the testing chamber under negative pressure. After passing through the separation membrane, the detection gas enters the other end of the testing chamber. An air quality sensor detects the air quality inside both ends of the testing chamber, facilitating detection, enabling quantitative detection, improving detection accuracy, and reducing error values.

The present application relates to the technical field of protein detection, and particularly relates to an ELISA detection kit for quantitatively detecting S-palmitoylation modified target proteins and a use method thereof; the kit comprises Protein G magnetic beads, a 96-well transparent polystyrene microwell plate, a 96-well plate magnetic frame, solution A, solution B, solution C, solution D, solution E, solution F, solution G; the present application relates to the comprehensive application of immunoprecipitation (IP), click chemistry and enzyme-linked immunosorbent (ELISA) signal amplification experimental principles, and realizes the effect of high-throughput quantitative detection of S-palmitoylation modified target proteins, is suitable for the mechanism and function research of S-palmitoylation modified target proteins of various samples (such as high-throughput screening of small molecule inhibitors targeting S-palmitoylation modified target proteins), and improves the experimental efficiency.