A kind of double-electrode method realizes the rapid detection instrument and method of bicarbonate and carbonate in water

Abstract

The invention relates to an instrument and method for fast detecting a bicarbonate radical and a carbonate radical in water through a double-electrode method. The instrument is used for fast detecting the bicarbonate radical and the carbonate radical in underground water, surface water and seawater and comprises a microprocessor with a built-in intelligent temperature compensation and quantitative calculation software algorithm, a pH electrode, a carbon dioxide electrode, a signal conditioning unit, a temperature collecting unit, a human-computer interaction unit and a load power source management unit, wherein the load power source management unit is responsible for converting battery voltage into load circuit work voltage, the pH electrode and the carbon dioxide electrode are connected with input of the signal conditioning unit, output of the signal conditioning unit is connected with collection pins of the microprocessor, the temperature collecting unit is connected with collection pins of the microprocessor, and the human-computer interaction unit is connected with an I / O interface of the microprocessor and controls unit parameter setting and result displaying of the microprocessor to be completed. Low-power operation is achieved, power source support is not needed, and the problem that the bicarbonate radical and the carbonate radical in the water cannot be fast detected on a field site is solved.

Description

technical field [0001] The invention belongs to the field of automatic testing, and in particular relates to an instrument and a method for quickly detecting bicarbonate and carbonate in a tested solution on site. Background technique [0002] Bicarbonate and carbonate ions are important parameters in hydrogeological investigation and environmental monitoring, and play an important role in analyzing the evolution characteristics of formation water. At the same time, bicarbonate and carbonate ions are important indicative parameters in the field of global carbon cycle, which can identify the migration characteristics and laws of carbon dioxide in formation water and surface water, and identify the escape and leakage of carbon dioxide. [0003] At present, the measurement of bicarbonate and carbonate ions is mainly done in laboratories, and rapid detection in the field cannot be realized. There is a risk of secondary pollution in the process of obtaining the measured water sa...

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Problems solved by technology

[0003] At present, the measurement of bicarbonate and carbonate ions mainly depends on the laboratory, and it is impossible to achieve rapid detection in the field

There is a risk of secondary pollution in the process of obtaining the measured water sample, which greatly weakens the authenticity of the measured information. At the same time, it generally takes a long time from sampling to completion of laboratory measurement, and the content of bicarbonate and carbonate ions has been reduced. changes, the measurement results can no longer represent the actual value of the water sample

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