A method for measuring solvent volume by optical fiber

Abstract

The invention discloses a method for measuring solvent volume by optical fiber. First, a main controller is connected to an optical fiber probe, a reagent bottle is placed in a water tank, the optical fiber probe extends into the water tank, and is placed symmetrically on both sides of the reagent bottle; Solvent, the optical fiber probe collects the data of N times of photometric feedback values, and then obtains the first collected data Q=the sum of N times data / N, and saves it as the initial value; when the volume is fixed, the optical fiber probe collects the current data Q 1 , the main controller will get the X from the initial value / current data 1 Compare with trigger value, if X 1 If it is less than the trigger value, then collect N times of data again, and set the ratio of initial value / current data to X 2 Compare with trigger value, if X 2 If the value is greater than the trigger value, the false trigger delay is prevented. After the delay, the fiber probe collects N times of data, and the ratio of the initial value / current data is X 3 Compare with trigger value, if X 3 If it is greater than the trigger value, it is judged that the solvent has reached the required measurement volume. In this case, the step response is used for constant volume, and the measurement speed is fast and the accuracy rate is high.

Description

technical field [0001] The invention belongs to the technical field of solvent volume determination, and particularly relates to a method for measuring solvent volume by using an optical fiber. Background technique [0002] With the continuous improvement of sample preparation technology, especially the increasing popularity of solid-phase extraction technology, laboratory operators need to frequently measure the volume of different solvents (also called water samples). Today, the difficulty faced by the measurement work is that the reagent bottle containing the solvent is in the water tank environment. Because the volatilization speed of different solvents is not the same, the measurement needs to have strict operational requirements, especially the fast volatilizing solvent, otherwise the data The results will be biased. Moreover, the current measurement technology for the volume of rapidly volatile solvents in the industry is not mature enough, and most of them rely on c...

AI Technical Summary

Problems solved by technology

Nowadays, the difficulty faced by the determination work is that the reagent bottle containing the solvent is in the water tank environment. Since the volatilization rate of the same solvent is not the same, the determination needs to have strict operating requirements, especially the fast volatilizing solvent, otherwise the data The result will be biased

Moreover, at present, the measurement technology for the volume of fast volatile solvents in this industry is not mature enough, and most of them rely on complex measurement devices, so the existing measurement methods still need to be broken through

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