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A Portable Purge and Trap Sampler

A purging, trapping and sampler technology, applied in instruments, scientific instruments, measuring devices, etc., can solve the problems of low peak separation between components, poor quantitative results, and sample component diffusion, and achieve low cost, Solve the effect of serious component diffusion and simple operation

Active Publication Date: 2021-02-02
庞英明 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This solves the problems of severe sample component diffusion, low peak separation between components, poor quantitative results, high cost of use, and some fields such as on-site sampling and field sampling, and meets the needs of more industry users

Method used

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  • A Portable Purge and Trap Sampler
  • A Portable Purge and Trap Sampler
  • A Portable Purge and Trap Sampler

Examples

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Embodiment Construction

[0032] Please refer to figure 2 , image 3 , Figure 4As shown, (13) is the pipeline connected to the external source purge gas. The material of the pipeline is required to be chemically resistant, chemically inert, and preferably flexible, so that the external source purge gas enters. In this embodiment, a pipeline made of polytetrafluoroethylene is used. The pipeline is installed on the nitrogen or helium source connector I (20). In order to meet the needs of frequent disassembly of parts in portable equipment, the present invention adopts a quick connector type connection, and the material is chemically resistant polymer polymer material, stainless steel or PEEK nut fittings are also available. Through connection I, pipelines of the same specification and material are connected to the online gas filter device (10) to remove nanometer-sized mechanical particles and prevent them from entering the downstream gas mass flow control device and damaging the flowmeter. The onli...

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Abstract

A portable purge and trap sampler for collecting volatile components in liquid samples, the structure is: based on the built-in micro-control system (7) as the core, independently control an air pump (19) and the upstream end through the pipeline (6) connected gas mass flow control device (8); the upstream end of the mass flow control device is connected to the gas pressure regulator (21), and the downstream end is connected to the liquid sample holding container ( 5) are connected; the upstream end of the gas pressure regulating device is connected to the gas online filter device (10); the upstream end of the gas filter device is connected to an air intake pipeline through a quick joint I (20); a "T" shaped three-way connection device (2), Its three-position valve end (2a) is connected to the outlet end of a multi-position switching valve device (1), the "U"-shaped pipe end (2c) is connected to the gas outlet end of the liquid sample container, and the sampling end (2d) is connected to the gas enrichment component connected, and a built-in rechargeable power supply (12) supplies power to the entire system.

Description

technical field [0001] The invention relates to a portable purge and trap sampler, which is used for enrichment sampling of volatile components in liquid samples. Background technique [0002] In the field of analysis and detection of volatile components in liquid samples, such as industrial and agricultural production, public safety, and scientific research, the primary problem that analysts or scientific researchers face is how to scientifically analyze and detect volatile components before using various commercialized special detection instruments. , Accurate, efficient, and fast implementation of sample pretreatment links is directly related to the success or failure of subsequent instrument detection and analysis. In the existing analysis and detection laboratory, the special detection and analysis instruments (such as gas chromatograph and gas chromatography mass spectrometer) used for the detection and analysis of volatile components in liquid samples are not suitable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/08
CPCG01N30/08
Inventor 庞英明郭安臣程志红
Owner 庞英明
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