Rapid on-line electrochemical monitoring method of total phosphorus

An electrochemical and fast technology, applied in the field of wireless transmission, can solve the problems of bulky equipment, narrow detection range, and long detection time, and achieve the effect of complex operation, wide detection range, and long detection time

Inactive Publication Date: 2019-12-20
摩尼特(武汉)智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problems of this method are complex process, narrow detection range, long detection time (3 hours), bulky equipment for online monitoring, and frequent maintenance
The current total phosphorus detection in the laboratory uses ammonium molybdate spectrophotometry, but the operation is complicated, the detection time is long, and there are many safety hazards. Therefore, a low-cost and fast detection method is also needed to replace the traditional total phosphorus detection method.

Method used

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  • Rapid on-line electrochemical monitoring method of total phosphorus
  • Rapid on-line electrochemical monitoring method of total phosphorus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Start the total phosphorus electrochemical rapid online monitoring system through the password set on the mobile phone or network platform. The monitoring system control circuit starts the peristaltic pump, and the peristaltic pump pumps the tested water sample from the monitoring point into the electrolytic cell. The volume of the electrolytic cell is 10 cubic millimeters , when the pumped water sample reaches 10mL, the magnetic switch set on the top tank of the electrolysis will give a signal that the water is full, the control circuit will cut off the power supply of the peristaltic pump, and the peristaltic pump will stop working. The base oxidizes the water sample in the electrolytic cell, and after the oxidation time is 30 minutes, disconnect the electrode power supply to stop the oxidation. The impedance analog resistance value is converted into a total phosphorus value by the impedance conversion total phosphorus chip, and then the total phosphorus value is conve...

Embodiment 2

[0044] After completing the process of Example 1 for the first time, the total phosphorus electrochemical rapid on-line monitoring system is in a completely closed state. When implementing the second (or nth) detection: start the total phosphorus electrochemical fast online monitoring system through the password set on the mobile phone or network platform, and the control circuit of this monitoring system starts the peristaltic pump to run in reverse, and the previous detection in the electrolyzer When the water samples from the electrolytic tank are completely pumped out, the magnetic switch set at the bottom of the electrolytic tank will give a water-empty signal, the power supply of the peristaltic pump will stop, the control circuit will reverse the power supply of the peristaltic pump and start the peristaltic pump to run forward, The pump pumps the detected water sample into the electrolytic cell from the detection point to clean the electrolytic cell. The cleaning water ...

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Abstract

The invention relates to a rapid on-line electrochemical monitoring method of total phosphorus. The method includes the following steps: a peristaltic pump pumps a monitored water sample into an electrolyzer from a monitoring point, wherein the capacity of the electrolyzer tank is 10mL; .OH hydroxyl free radicals are generated by electrochemical electrodes to completely oxidize the water sample inthe electrolyzer, wherein the oxidizing time is 30min; a control system converts a resistance value fitted by electrochemical impedance spectroscopy into a total phosphorus value, and then converts an electrical signal to a digital signal, transmits the digital signal with the second generation (2G) or the third generation (3G) set by the system, and the digital signal is received and controlledby using a mobile phone or a network platform. Compared with a traditional online total phosphorus monitoring method, the detection time is short, the detection range is wide, the accuracy sensitivityis high, the equipment price is low, there is basically no maintenance cost, and signal conversion is convenient. The rapid on-line electrochemical monitoring method of total phosphorus completely overcomes problems of long inspection time, high equipment price and high maintenance cost and so on in existing online total phosphorus monitors and provides an urgently needed monitoring means and equipment for environmental monitoring and environmental protection in China.

Description

technical field [0001] The invention relates to an electrochemical rapid on-line monitoring method for total phosphorus, in particular to realizing rapid and accurate monitoring of total phosphorus by using an electrochemical principle and realizing wireless transmission. Background technique [0002] Total phosphorus is an important indicator to measure the degree of water pollution. It refers to the results of the determination of various forms of phosphorus contained in water samples after digestion and conversion into orthophosphate. It is measured in milligrams of phosphorus per liter of water sample. Phosphorus in water can exist in the form of elemental phosphorus, orthophosphate, condensed phosphate, metaphosphate and organic group-bound phosphate. [0003] Its main sources are domestic sewage, chemical fertilizers, organophosphorus pesticides, and phosphate builders used in modern detergents. Phosphate interferes with the coagulation process in waterworks. Phospho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01R27/02
CPCG01N27/26G01R27/02
Inventor 张子蓬谢逾群万端极刘德富王淑青张宏硕吴熳蒋心越李祝常锋毅汪淑廉葛红梅田超梅洪周明喆
Owner 摩尼特(武汉)智能科技有限公司
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