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Pretreatment apparatus and method for determination of dissolved helium and neon in water

A technology for helium-neon and water samples is applied in the field of pre-treatment devices for measurement, which can solve the problems of inability to obtain, inaccurate measurement and measurement results, and inconvenient operation, and achieves convenient operation, high efficiency, and meets the requirements of batch sample analysis. Effect

Active Publication Date: 2015-11-25
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, since the vacuum degassing device is used separately, the degassing tank needs to be disassembled after the purification process is completed, and then reconnected to the helium isotope analysis system, resulting in inconvenient operation and inaccurate measurement and measurement results
In particular, the analysis results of neon content and its isotope ratio cannot be obtained

Method used

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  • Pretreatment apparatus and method for determination of dissolved helium and neon in water
  • Pretreatment apparatus and method for determination of dissolved helium and neon in water
  • Pretreatment apparatus and method for determination of dissolved helium and neon in water

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] Such as figure 1 Shown is a specific embodiment of the pretreatment device used for the determination of the content of dissolved helium-neon in water and the isotope ratio of the present invention. In this embodiment, the device includes a sample bottle 1 , a degassing bottle 2 , a water removal trap 6 , a sample storage tank 12 , a first activated carbon trap 13 , a second activated carbon trap 14 and an isotope mass spectrometer 20 arranged in sequence. Wherein, both the sample bottle 1 and the degassing bottle 2 are installed on the support 4 .

[0037] In one embodiment, the sample bottle 1 and the degassing bottle 2 are connected to the water removal trap 6 through a three-way valve 3 . In a preferred embodiment, magnesium perchlorate is housed in the water removal trap 6, which can effectively remove the water vapor in the dega...

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Abstract

The invention discloses a pretreatment apparatus and method for determination of dissolved helium and neon in water. The apparatus comprises a low vacuum water sample degassing part, a high vacuum helium-neon purifying part and a detection part which are successively connected, wherein the low vacuum water sample degassing part comprises a sample bottle, a degassing bottle and a de-watering pit, the high vacuum helium-neon purifying part comprises a sample storage tank, an active carbon pit and a high vacuum member, the active carbon pit and the sample storage tank are placed in liquid nitrogen under low temperature condition for purifying other gaseous components except He and Ne in separated gas, the high vacuum member comprises a valve and a vacuum pump and is capable of creating vacuum conditions for isotope mass spectrometry, and the detection part is connected with the high vacuum helium-neon purifying part and used for determining the contents of helium and neon in the purified separated gas and the composition of isotopes of helium and neon. The apparatus can successively complete water sample degassing, purification of separated gas and detection of the contents and isotope ratios of helium and neon at one time and produces more accurate metering and determination results.

Description

technical field [0001] The invention relates to an experimental device used in the field of exploration and development of oil and gas fields, in particular to a pretreatment device and method for measuring dissolved helium and neon in water. Background technique [0002] The interaction between groundwater and oil and gas can control the secondary migration of oil and gas, and plays a very important role in the process of oil and gas migration. The determination of the content of noble gases is one of the important tools to quantify the interaction between oil, gas and groundwater. Among them, the abundance and isotope information of helium and neon are widely used to trace the source of underground fluids. The migration path provides reliable geological-geochemical information. It also plays an important role in the migration of groundwater bodies, the age determination of ancient sealed water and deep groundwater. [0003] The prior art discloses a device for pretreatme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34
Inventor 刘文汇陶成仰云峰王杰杨华敏王萍
Owner CHINA PETROLEUM & CHEM CORP
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