Device for detection of low-concentration Freon in seawater and production method thereof

A freon, low-concentration technology, applied in the field of marine environmental monitoring, can solve the problems of difficulty in realizing large-scale continuous real-time online automatic monitoring, affecting analysis speed and accuracy, and complex sample components, saving labor and material costs, and fast in the detection process. Accurate, scalable effects

Inactive Publication Date: 2012-08-29
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The above methods require cumbersome processing steps, complex sample components, high operating costs, and long detection time, which gr

Method used

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  • Device for detection of low-concentration Freon in seawater and production method thereof
  • Device for detection of low-concentration Freon in seawater and production method thereof

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Embodiment Construction

[0023] see figure 1 , the present invention has developed a device for detecting low-concentration freon in seawater, which takes the following steps:

[0024] The device is composed of an air stripping component, a capture and desorption component, a chromatographic detection component, a system control component, and a gas supply component. Solenoid valves 1-3, 1-4; capture and desorption components set capture and desorption chamber 2-1, capture pipe 2-2, high temperature liquid pool 2-11, heater 2-12, low temperature liquid pool 2-13, Refrigerator 2-14, three-way solenoid valve 2-4, 2-5, 2-6, 2-7, 2-9, 2-10 and micropump 2-3, 2-8; chromatographic detection component is provided with gas chromatograph Instrument 3-1, computer 3-2; system control components set six-way valve 4-1, six-way valve 4-2, PLC programmable controller 4-3; air supply component set purge gas 5-1, high-purity load Gas 5-2, standard gas 5-3.

[0025]The purging pipe 1-1 is a pressure-resistant hard g...

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Abstract

The invention provides a device for detection of low-concentration Freon in seawater, which is characterized in that a gas stripping component comprises a purge tube, a water-gas separator and a tee solenoid valve; a trap desorption component comprises a trap desorption chamber, a trap tube, a high-temperature solution tank, a heater, a low-temperature solution tank, a refrigeration device, a tee solenoid valve and a micro pump; a chromatographic detection component comprises a gas phase chromatograph and a computer; a system control component comprises a six-way valve, a PLC (programmable logic controller); and a gas supply component comprises purging gas, high-purity carrier gas and standard gas. According to the production method, the components are designed, produced and connected, and molds of the components of the device are produced, processed and assembled to form the device. The device has the advantages of no need for any chemical reagent, no pollution, accurate detection, good reproducibility and good stability and reliability, the automated operation of detection can be realized, the cost can be reduced, the device is particularly suitable for Freon detection of deep and remote sea survey ships or scientific research ships, and the long-time real-time, online and continuous monitoring can be realized.

Description

technical field [0001] The present invention relates to the technical field of marine environment monitoring, in particular to a device for detecting low-concentration freon in seawater, in particular to a process device and a manufacturing method thereof applied to the deep-sea freon chemical tracer technology to realize the enrichment and detection of trace freon . Background technique [0002] Freons, also known as chlorofluorocarbons (CFCs), are several fluorochloromethanes and fluorochloroethanes that are entirely produced by humans, the most common being monofluorotrichloromethane (CFC-11), difluorodichloromethane (CFC-12), trifluorotrichloroethane (CFC-113). They are gases or volatile liquids at room temperature, are chemically stable, nonflammable, and have very low toxicity, making them widely used commercially. As early as 1974, Molina and Rowland pointed out the mechanism of Freon’s destruction of ozone. In 1985, Farman proved the correctness of the former theor...

Claims

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Application Information

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IPC IPC(8): G01N30/08G01N30/02G01N30/64G01N30/20
Inventor 何鹰郑晓玲王保栋张栋王艳君
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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