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Detection device of chloride in drinking water

A detection device, chloride technology, applied in the direction of phase influence characteristics measurement, etc., can solve the problems of high requirements for the use environment, high requirements for spectral inversion, slow analysis speed, etc., and achieve low loss, strong resistance to harsh environments, and preparation The effect of simple process

Inactive Publication Date: 2013-12-18
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the remote sensing monitoring method has the characteristics of a wide monitoring range and is convenient for long-term dynamic monitoring. However, the measurement is easily affected by the optical characteristics of the water body, the reflection of the atmosphere and the water surface, etc., and has high requirements for its subsequent spectral inversion; the acoustic method can accurately measure liquid The concentration of a certain substance in the water, but its accuracy is affected by the sensitivity of the acoustic sensor device; the potentiometric titration method can be used to detect the chloride content in water by analyzing the solution of the titrant silver nitrate, but the analysis speed is slow; the ion chromatography uses an ion chromatograph to directly Measuring the chloride content in water, but the cost of the required equipment is relatively high, and the requirements for the use environment are high

Method used

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  • Detection device of chloride in drinking water
  • Detection device of chloride in drinking water
  • Detection device of chloride in drinking water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] exist figure 1 In the schematic diagram of the drinking water chloride detection device shown, the light source is a broadband light source 1 with a central wavelength of 1550nm connected to one end of the biconical photonic crystal fiber sensor 3 through the first optical fiber connector 2, and the other end of the biconical photonic crystal fiber sensor Connect with the near-infrared spectrum analyzer 5 through the second optical fiber connector 4; figure 2 As shown, the above-mentioned biconical photonic crystal fiber sensor is formed by melting and tapering the optical fiber to change the structure of the core and the cladding. Single-mode optical fiber 8 constitutes.

Embodiment 2

[0019] A broadband light source with a central wavelength of 850nm is connected to one end of the biconical photonic crystal fiber drinking water chloride sensor through the first optical fiber connector, and the other end of the biconical photonic crystal fiber drinking water chloride sensor is connected to the drinking water chloride sensor through the second optical fiber connector. The connection of the near-infrared spectrum analyzer; the above-mentioned biconical photonic crystal fiber drinking water chloride sensor is a 235mm long biconical photonic crystal fiber formed by changing the structure of the core and the cladding through the fusion of the optical fiber. A single-mode fiber and a second single-mode fiber are formed. Such as image 3 As shown, the interference fringes are smooth, and the contrast of the interference signal is 3.54dB.

Embodiment 3

[0021] The light source is a broadband light source with a central wavelength of 2400nm, which is connected to one end of the biconical photonic crystal fiber drinking water chloride sensor through the first optical fiber connector, and the other end of the biconical photonic crystal fiber drinking water chloride sensor is connected to the drinking water chloride sensor through the second fiber optic connector. The near-infrared spectrum analyzer is connected; the above-mentioned biconical photonic crystal fiber drinking water chloride sensor is formed by melting and tapering the optical fiber to change the structure of the core and the cladding. A single-mode fiber and a second single-mode fiber are formed.

[0022] The light emitted by the light source enters the biconical photonic crystal fiber sensor, and the biconical photonic crystal fiber sensor is placed in the drinking water to be measured and surrounded by the drinking water to be measured. The light is split at the ...

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Abstract

The invention discloses a detection device of chloride in drinking water. The detection device is mainly characterized in that a light source with a broadband of 850-2400nm is connected with one end of a double cone photonic crystal optical fiber sensor through a first optical fiber connector; the other end of the double cone photonic crystal optical fiber sensor is connected with a near infrared spectroscopy analyzer through a second optical fiber connector; the double cone photonic crystal optical fiber sensor is constituted by respectively welding a first single mode fiber and a second single mode fiber at two ends of a double cone photonic crystal fiber with a length of 30-300mm and formed by changing structures of a fiber core and a cladding through an optical fiber fused biconical taper. The detection device of the chloride in the drinking water, disclosed by the invention, has the advantages of microminiaturization, all-fiber property, low loss, simplification in manufacture, resistance to severe environments and high sensitivity.

Description

technical field [0001] The invention relates to a detection device, in particular to a detection device for drinking water. Background technique [0002] Chloride in drinking water is a key factor affecting its water quality. When the concentration of chloride in drinking water is too high, it will endanger human health. With the advent of various new types of drinking water, the accurate detection of its water quality has attracted more and more attention. Therefore, how to accurately determine the water quality by measuring the chloride information of drinking water has always been a research hotspot in drinking water quality detection technology. [0003] At present, the methods for measuring drinking water quality mainly include: remote sensing monitoring method, acoustic method, potentiometric titration method, ion chromatography and so on. For example, the remote sensing monitoring method has the characteristics of a wide monitoring range and is convenient for long-t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45
Inventor 付兴虎付广伟纪玉申申远毕卫红
Owner YANSHAN UNIV
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