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Volatile to-be-detected substance enrichment device capable of being used for cross purging of nitrogen and helium and application thereof in soil sample detection

A analyte and volatile technology, applied in the field of laboratory equipment, can solve the problems of high price of helium and increased experimental cost.

Pending Publication Date: 2020-07-07
GREENTOWN AGRI TESTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the price of helium is too expensive, it is easy to increase the cost of the experiment

Method used

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  • Volatile to-be-detected substance enrichment device capable of being used for cross purging of nitrogen and helium and application thereof in soil sample detection
  • Volatile to-be-detected substance enrichment device capable of being used for cross purging of nitrogen and helium and application thereof in soil sample detection
  • Volatile to-be-detected substance enrichment device capable of being used for cross purging of nitrogen and helium and application thereof in soil sample detection

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Embodiment Construction

[0023] This embodiment provides a technical solution:

[0024] Such as Figure 1~4 As shown, a volatile analyte enricher for nitrogen and helium cross-purging, including an upper shell, a switching device for automatically switching between nitrogen and helium, and a device for removing volatile analytes The water removal device 2 and the volatile analyte enrichment device in the object; the switching device includes an airtight partition plate 36, a helium gas inlet pipe 34 and a connecting rod 38; the airtight partition plate 36 is fixedly arranged on the upper casing On the inner peripheral wall, the airtight partition plate 36 is provided with a helium through-hole 37 for helium to pass through, and the end of the connecting rod 38 is fixed with a sliding block 380. Correspondingly, the lower end of the airtight partition plate 36 is provided with an adapter The chute where the sliding blocking block 380 slides, and the sliding blocking block 380 is slidably arranged belo...

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Abstract

The invention discloses a volatile to-be-detected substance enrichment device capable of realizing cross purging of nitrogen and helium and an application thereof in soil sample detection, and particularly relates to the field of laboratory instruments. The device comprises an upper shell, a switching device, a water removal device and an enrichment device; the switching device comprises a closedpartition plate, a helium inlet pipe and a connecting rod; the closed partition plate is fixedly arranged on the inner circumferential wall of the upper shell, a helium through hole is formed in the closed partition plate, a sliding blocking block is fixedly arranged at the end of the connecting rod, a sliding groove is formed in the lower end of the closed partition plate, and the sliding blocking block is correspondingly arranged below the helium through hole in a sliding mode; the helium inlet pipe is fixedly arranged above the closed partition plate and is communicated with the helium through hole; and a nitrogen through hole is formed in the closed partition plate and located between the inner wall of the upper shell and the outer wall of the helium inlet pipe. The switching device further comprises a driving mechanism. The device has the advantage that the nitrogen carrier gas and the helium carrier gas can be switched according to the actual situation, so the volatile to-be-detected object in the sample can be blown out more easily.

Description

technical field [0001] The invention relates to the field of laboratory instruments, in particular to a volatile analyte enricher capable of cross-purging nitrogen and helium and its application in soil sample detection. Background technique [0002] Gas chromatography is a chromatographic separation analysis method that uses gas as the mobile phase. The vaporized sample is brought into the chromatographic column by the carrier gas (mobile phase). The stationary phase in the column has different molecular forces with the components in the sample. The time for each component to flow out of the chromatographic column is different, and the components are separated from each other. Gas chromatography is suitable for qualitative and quantitative analysis of volatile organic compounds. It can be used in conjunction with red light and absorption spectroscopy or mass spectrometry. Chromatography is used as a means of separating complex samples to achieve high accuracy. [0003] Whe...

Claims

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Application Information

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IPC IPC(8): G01N30/08
CPCG01N30/08
Inventor 孙文闪周婷婷诸骏杰钟寒辉朱萌萌周敏董叶箐俞婕刘静
Owner GREENTOWN AGRI TESTING TECH CO LTD
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