Fluorinated aromatic hydrocarbon polymer capillary tube gas-permeable membrane sample cell, measuring device and measuring method thereof

Abstract

The invention relates to the measurement field of carbon dioxide, in particular to a fluorinated aromatic hydrocarbon polymer capillary tube gas-permeable membrane sample cell which comprises (1) a sleeve, (2) a fluorinated aromatic hydrocarbon polymer capillary tube, (3) a first sample inlet tube and a second sample inlet tube, (4) a first optical liquid coupling device and a second optical liquid coupling device as well as (5) a first tracer agent tube and a second tracer agent tube, wherein the left and the right sides of the sleeve are respectively provided with an injection hole and a discharge hole; the length of the fluorinated aromatic hydrocarbon polymer capillary tube is longer than that of the sleeve; the capillary tube is inserted into the sleeve from the left end, and is inserted out of the sleeve from the right end; the first sample inlet tube is connected with the injection hole of the sleeve, and the second sample inlet tube is connected with the discharge hole of the sleeve; the first optical liquid coupling device is provided with a three-end joint, and the second optical liquid coupling device is also provided with a three-end joint; and the first tracer agent tube is connected with a second joint of the first optical liquid coupling device, and the second tracer agent tube is connected with a second joint of the second optical liquid coupling device. Compared with the prior art, the invention has high sensing sensitivity and large dynamic range, and is very suitable for researching and developing a CO2 partial pressure field measuring instrument with high accuracy, rapid response and low power consumption.

Description

technical field [0001] The invention relates to the field of carbon dioxide measurement, in particular to a fluorinated aromatic hydrocarbon polymer capillary gas permeable membrane sample cell, a measuring device and a measuring method. Background technique [0002] As a regulator of the global climate, the ocean plays an important role in regulating atmospheric CO 2 Concentration and other aspects play a crucial role, ocean CO 2 partial pressure (pCO 2 ) is of great significance to the study of air-sea exchange, marine biological processes, marine carbon cycle and even global climate change. [0003] Over the past two decades, in situ measurements of sea surface CO 2 Partial pressure sensor technology has made great progress, studies have shown that CO 2 The pressure-dividing optical fiber chemical sensor will be a CO with high precision, fast response, low power consumption and high cost 2 The development direction of partial pressure sensor. [0004] Optical Fiber ...

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Problems solved by technology

[0008] First object of the present invention is to provide a kind of gas permeable membrane sample cell based on Teflon AF2400 capillary, to solve the prior art for can provide

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