Detection method and apparatus for stability of liquid sample

Abstract

The invention discloses a detection method and apparatus for the stability of a liquid sample. The method comprises the following steps: scanning and detecting the light intensity value of a near-infrared source incident into the liquid sample by using a photodetector, wherein the volume of the liquid sample is at least 2 ml, the height of the liquid sample scanned and detected by the photodetector is h, the total height of the liquid sample is H, and h is not more than H; and calculating the value of a liquid sample stability index TSI according to a ratio of the sum of the change values of the light intensity of two adjacent scanning operations to the total height H of the liquid sample within scanning frequency n in preset time. According to the invention, a histogram is established on the basis of the TSI distribution probability of a great number of samples detected a plurality of times and the TSI value, and the TSI value distribution state of the great number of liquid samples is directly calculated; meanwhile, a visual and clear radar map is established for the values of the liquid sample stability index TSI at different time points to evaluate the stability of the liquid sample.

Description

technical field [0001] The invention belongs to the field of chemical analysis, and in particular relates to a liquid sample stability detection method and device. Background technique [0002] With the development of science and technology and the progress of society, the safety issues of food, medicine, petrochemical industry and daily chemicals are becoming more and more important. Many products and intermediate process materials in a wide range of commercial applications are dependent on fine particles dispersed or suspended in a liquid (usually water) and are therefore classified as two-phase systems, including solid-liquid dispersion systems, liquid-liquid dispersions system and gas-liquid dispersion system. [0003] The efficacy of dispersion-based products is extremely dependent on their stability both at rest and during use. In the context of the present invention, the term "stability" refers to the tendency of particles comprising a dispersed phase to remain sepa...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical defects of unintuitive and poor contrast in the detection results of the existing liquid sample stability detection methods, the present invention directly calculates the TSI distribution probability and TSI value of a large number of samples through the histogram of multiple detections. TSI value distribution state, and at the same time establish an intuitive and clear radar map of the stability index TSI value of the liquid sample at different times to evaluate the stability of the liquid sample

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