Method for detecting chloride ion concentration in water

A technology for chloride ion concentration and water detection, which is applied in material analysis by observing the influence on chemical indicators, and analysis by chemical reaction of materials, etc., can solve problems such as high cost, complexity and tediousness, and achieve low cost, Improve detection accuracy and create simple effects

Inactive Publication Date: 2015-04-08
SUZHOU GUOHUAN ENVIRONMENT DETECTION
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Problems solved by technology

[0003] Regarding the detection of chloride ions, there are many methods such as molar method, potentiometric titration, mercury salt titration, PCl electrode method, co-precipitation enrichment spectrophotom

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  • Method for detecting chloride ion concentration in water
  • Method for detecting chloride ion concentration in water

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[0028] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0029] Excessive chloride ions in the water in domestic production will not only corrode pipelines and cause losses, but also excessive chloride ions in the domestic water will harm human health. The present invention provides a simple and convenient method for detecting the concentration of chloride ions in water. For the method for detecting chloride ions in water in this embodiment, the steps are:

[0030] (1) Prepare the microfluidic paper chip 1 required for testing; the paper chip is a common filter paper type

[0031] The microfluidic paper chip includes a hydrophobic area and a hydrophilic area. The hydrophilic area is provided with a number of liquid inlets and a reaction color development ...

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Abstract

The invention discloses a method for detecting chloride ion concentration in water, and particularly relates to a method for detecting chloride ion concentration in water by employing a microfluidic paper chip method. Reagents used in the method are a mercuric thiocyanate-methanol solution and a ferric nitrate-concentrated nitric acid solution. Through drawing a standard curve, a linear equation is fitted by using a proportional relationship between the chloride ion concentration and a gray value within a certain concentration range. According to the method disclosed by the invention, detection can be finished by virtue of photographic equipment and a computer; and the method is simple and convenient.

Description

technical field [0001] The invention relates to a method for testing the concentration of chloride ions, in particular to a method for detecting the concentration of chloride ions in water by a microfluidic method. Background technique [0002] Paper-based microfluidics, referred to as paper chip, uses paper (such as filter paper, chromatographic paper, nitrocellulose membrane, etc.) The area between the hydrophobic and interphase forms a paper channel, and integrates basic operation units such as sampling, separation, reaction, and detection. A chip that runs through the entire system with a controllable fluid and realizes the analysis function of a conventional laboratory. Since Harvard University Martinez first proposed the concept and produced paper chips based on it in early 2007, microfluidic paper chips have been successfully used in medical diagnosis, environmental monitoring, food safety and nutrition monitoring and other fields, and research on it has also attracte...

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Application Information

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IPC IPC(8): G01N21/78
Inventor 赵昌平吴淼淼
Owner SUZHOU GUOHUAN ENVIRONMENT DETECTION
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