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Device and method for synchronously collecting atmosphere CO2 and water vapor samples

A synchronous collection and CO2 technology, applied in the direction of sampling devices, etc., can solve the problems of affecting the measurement results, high requirements for instrument accuracy, and high requirements, and achieve the effects of easy use, avoiding temperature fluctuations, and easy installation and disassembly

Inactive Publication Date: 2012-07-18
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Problems solved by technology

However, due to atmospheric CO 2 The content is very low 350-380ppm, its 13 The C content is lower, accounting for only 1.11%. Therefore, not only the accuracy of the measurement and analysis instruments is high, but also the sampling method and sampling equipment are also very high. To avoid various pollution, strong water-absorbing agents such as magnesium perchlorate are needed to remove water vapor. , otherwise it will seriously affect the measurement results

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  • Device and method for synchronously collecting atmosphere CO2 and water vapor samples
  • Device and method for synchronously collecting atmosphere CO2 and water vapor samples

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Embodiment

[0038] A separate or simultaneous acquisition of atmospheric CO 2 and water vapor sample devices, including atmospheric filtration system, gas extraction system, atmospheric CO 2 and H 2 O concentration analysis and measurement module, water vapor condensation and storage system, CO 2 Gas sampling storage system and gas drying system.

[0039] The atmospheric filtration system consists of a gas sampling port 1, an atmospheric filter 2, a mounting bracket 3, and an air intake pipe 4; the gas extraction system consists of a small DC air pump 5, an adjustable DC power supply 6, and a flow meter 7; the atmospheric CO 2 and H 2 The O concentration analysis and determination module consists of a multi-channel selection solenoid valve group 8, atmospheric CO 2 and H 2 O concentration analyzer 9 is composed of; water vapor condensation and storage system is composed of three-way selection valve 10, -69 ℃ cryogenic cold trap (alcohol + liquid nitrogen mixed) 13, quick connection j...

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Abstract

The invention provides a device and method for independently or synchronously collecting atmosphere CO2 and water vapor samples, which are mainly used for synchronously collecting air CO2 and water vapor samples in the open and are especially applicable to analyzing the concentrations of CO2 and water vapor in the air and the isotopic compositions of 13C in CO2 and 2H(D) / 180 in the water vapor. Meanwhile, the device and the method are also applicable to independently collecting CO2 or water vapor sample. The device and the method are widely applied to researches in the aspects of ecology, atmosphere and environment and are convenient for field installation and removal. The device comprises an atmosphere filtering system, a gas extraction system, an atmosphere CO2 and H2O concentration analysis and measurement module, a water vapor condensation and storage system, a CO2 gas sampling and storage system and a gas drying system.

Description

technical field [0001] The invention relates to the fields of atmospheric science, hydrology and ecological mechanical devices, in particular to a device and method for synchronously collecting atmospheric CO2 and water vapor samples. Mainly used for synchronous collection of CO in the atmosphere 2 and water vapor samples for the analysis of atmospheric CO 2 and water vapor concentration, and the samples collected synchronously were measured with a spectrometer for CO 2 middle 13 C and water vapor 2 H or D. Background technique [0002] CO 2 It is an important component of the atmosphere. At present, CO in the atmosphere 2 The concentration has reached 380μppm, which is the highest value since 650,000 years in the history of the earth, and the atmospheric CO2 concentration has increased at an annual rate of 1.8μmol.mol-1 in the past 10 years. CO 2 Concentration can be used as one of the criteria to measure the quality of the air. Although its composition accounts for...

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Application Information

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IPC IPC(8): G01N1/24G01N1/14
Inventor 李庆康温学发张雷明于贵瑞孙晓敏王晶苑
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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