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An in-situ measurement system for water quality parameters at the particle-water interface

A technology for water quality parameters and particulate matter, which is applied in the field of measuring instruments, can solve problems such as lack, achieve clear edges of particulate matter, and eliminate background light interference and particle scattering interference

Active Publication Date: 2020-06-30
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is a lack of effective in-situ observation of the water-particle interface and the measurement of the ion concentration (water quality parameters) at the interface.

Method used

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  • An in-situ measurement system for water quality parameters at the particle-water interface
  • An in-situ measurement system for water quality parameters at the particle-water interface
  • An in-situ measurement system for water quality parameters at the particle-water interface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 An in-situ measurement system for water quality parameters at the particle-water interface

[0028] A particle-water interface water quality parameter in-situ measurement system, such as figure 1 As shown, it includes a sample platform unit 1 , an optical display unit 3 , a microelectrode operation unit 8 , a data collection and display unit 12 and an optical anti-vibration platform 16 .

[0029] The sample platform unit is a square glass reaction container used to hold the sample to be tested. One side of the glass reaction container is formed by superimposing two pieces of ultra-thin glass with the same width and different height. The lower glass is located inside the reaction container. The lower glass upper edge forms a settling platform 2 for particles, such as figure 2 shown;

[0030] The height difference between two pieces of ultra-thin glass is 15cm;

[0031] The thickness of the ultra-thin glass is 0.17mm;

[0032] Described optical display unit...

Embodiment 2

[0040] Example 2 A method for in-situ measurement of water quality parameters at the particle-water interface

[0041] Due to the electric double layer effect on the surface of particles, the electric double layer theory well known to those skilled in the art believes that in the area near the surface, the closer the ion is to the surface, the higher the concentration is, while the electric charge opposite to the surface is The closer the same ion is to the surface, the lower its concentration. while H + is the most common representative ion, so measuring H + The concentration profile (pH profile) is taken as a representative example.

[0042]The observed silica particle suspension sample is placed in the sample platform unit, and the liquid level of the suspension is required to be higher than the sedimentation platform. The ultra-thin glass is 0.17mm, and the particles are naturally settled. The optical display unit IM-4 microscope was used to observe the particles in foc...

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Abstract

The invention belongs to the technical field of measuring instruments, and particularly relates to an instrument system for in-situ measurement of particulate matter-water interface water quality parameters. The in-situ observation system comprises a sample platform unit, an optical display unit, a micro-electrode operation unit, a data acquisition and display unit and an optical anti-shock platform. The in-situ observation system is able to implement the in-situ settlement and fixation of the particulate matter in water, clearly present the interface edge of the particulate matter in water under the optical field of view, and realize the nano-scale mobile measurement and data recording of microelectrode tips.

Description

Technical field: [0001] The invention belongs to the technical field of measuring instruments, and in particular relates to an instrument system for in-situ measurement of water quality parameters at the particle-water interface. Background technique: [0002] In the water environment of nature or artificial water treatment, various types of particulate matter widely exist. Particles and water form a physical and chemical interface. Due to the hydrolysis of hydroxyl groups on the surface of particles and the interaction with chemical substances in the water body, the water quality parameters of the microenvironment around the particles are different from the water quality parameters of the main body of the water environment. And this difference affects the specific process of the interface chemical reaction. How to measure the particle-water interface water quality parameters in situ is of great significance for the understanding of the chemical principles of water environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/04G01N21/84G01N27/26
CPCG01N15/04G01N21/84G01N27/26
Inventor 曲久辉况亮刘会娟马百文威廉艾伦·杰斐逊
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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