High-accuracy substance solubility measurement device based on laser refraction

Abstract

The invention relates to a high-accuracy substance solubility measurement device based on laser refraction. The device comprises a dissolution system and a dissolution balance point judgment system, can judge a dissolution balance point of a solution on the basis of laser refraction under different constant-temperature conditions and further measures substance solubility. The device mainly has the advantages that the measurement accuracy of the dissolution balance point of the solution is improved by detecting uniformity of the solution sensitively on the basis of laser refraction, operation is simple, the applicability is wide, the stability is good, and the measurement accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of testing devices, in particular to a high-precision measuring device for solubility of substances based on laser refraction. Background technique [0002] Solubility of substances is an important research content of chemical thermodynamics. Water softening of soft rock in engineering is closely related to mineral solubility, and the study of the relationship between the two is of great significance for a deep understanding of the nature of soft rock softening and the process of water damage and damage of soft rock. The solubility of soft rock minerals is generally very low at solid-liquid equilibrium, and a very small error in judging the dissolution equilibrium point can have a huge impact on the solubility measurement results. However, it is difficult to accurately determine the dissolution equilibrium point by conventional methods. Therefore, it is necessary to develop a high-precision measuring device...

AI Technical Summary

Problems solved by technology

The disadvantages of the balance method are: when analyzing the concentration of the supernatant, the solvent is easy to volatilize, which can cause large errors; the chemical analysis operation is relatively cumbersome; when "the concentration values ​​​​measured in cycles remain consistent", it is not checked whether the solution is uniform, so it cannot be determined Whether the measured solution has really reached the dissolution equilibrium point at this time

The disadvantage of the dynamic method is that it needs to judge the dissolution equilibrium point with the naked eye, which has a large human error

Compared with judging the dissolution equilibrium point with the naked eye, the use of the laser light intensity monitoring system to judge the dissolution equilibrium point has made great progress, reducing human error, but there are still deficiencies: the measurement object is required to be solid; only for the laser light intensity on a single laser propagation path For monitoring, "received laser light intensity is maximum", that is, the solution is not checked whether the solution is uniform during the dissolution equilibrium, so it is impossible to determine whether the measured solution has really reached the dissolution equilibrium point at this time

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