Low-end calibration buffer solution for calibration process of upper gastrointestinal tract pH value dynamic monitor

Abstract

The invention provides a low-end calibration buffer solution for a calibration process of an upper gastrointestinal tract pH value dynamic monitor. The low-end calibration buffer solution is prepared from the following raw materials in parts by mass: 0.35 part of nanosilicon dioxide, 3.5 parts of ethanol, 0.2 part of potassium sorbate, 3.5 parts of citric acid, 5 parts of a 5% glucose water solution and 25 parts of water; and the pH value of the buffer solution is regulated to 1.07 by virtue of sodium hydroxide or hydrochloric acid. With the application of the pH value calibration method of the upper gastrointestinal tract pH value dynamic monitor provided by the invention, a high-end pH value standard and a low-value pH value standard can be rapidly set; an adopted high-end calibration buffer solution and the adopted low-end calibration buffer solution can take an effect of activating a pH electrode probe and a reference electrode and an effect of reducing electrode surface resistance, so that the sensitivity of the electrode is improved; and as the high-end calibration buffer solution and the low-end calibration buffer solution are adopted for conducting calibrating, the monitoring precision of the upper gastrointestinal tract pH value dynamic monitor can be enhanced.

Description

technical field [0001] The invention relates to the field of digestive tract power detection equipment, in particular to a low-end calibration buffer used in the calibration process of an upper digestive tract pH value dynamic monitor. Background technique [0002] At present, in the clinical monitoring of gastroesophageal reflux in the Department of Gastroenterology, an upper gastrointestinal pH dynamic monitor is usually used to monitor the patient's upper gastrointestinal pH. That is, the electrochemical reaction between the pH electrode probe and the digestive juice with different pH values ​​generates a corresponding voltage signal, and the voltage signal reflects the pH information of the upper digestive tract. The detection accuracy of the pH electrode probe in the prior art is low, which makes the detection value of pH inaccurate and cannot accurately reflect the real situation of the patient in real time. The pH value calibration is to set the high-end pH value sta...

AI Technical Summary

Problems solved by technology

The detection accuracy of the pH electrode probe in the prior art is low, which makes the detection value of pH inaccurate and cannot accurately reflect the real situation of the patient in real time