Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Atmospheric pressure photo ionization source device for detecting volatile organic compounds in water

A volatile organic compound, atmospheric pressure technology, applied in the direction of electron/ion optical device, ion source/gun, circuit, etc., can solve problems such as clogged membrane

Active Publication Date: 2021-06-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the complex matrix in the liquid will block the membrane, it cannot be directly used for the detection of complex matrix liquid samples

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Atmospheric pressure photo ionization source device for detecting volatile organic compounds in water
  • Atmospheric pressure photo ionization source device for detecting volatile organic compounds in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see figure 1 , a structural schematic diagram of an atmospheric pressure photoionization source device for detecting volatile organic compounds in water according to the present invention. It consists of a dynamic purging and bubbling device 1 and an atmospheric pressure photoionization source 2.

[0036] The dynamic purging and bubbling device 1 includes four capillaries 3, a glass vial 4, a liquid sample 5, a constant temperature water bath 6, and a bubbling bottle outlet 7; the purge gas 8 is passed into the four capillaries 3, and the liquid sample 5 is immersed in the bottom of the capillary 3 , the volatile organic compounds in the liquid sample 5 enter the cavity 11 of the atmospheric pressure photoionization source through the outlet 7 of the bubbling bottle and the heating device 10 .

[0037] Atmospheric pressure photoionization source 2 includes ionization source cavity 11, reagent gas inlet 12, high-humidity sample inlet (i.e. bubble bottle outlet 7), suppl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
The inside diameter ofaaaaaaaaaa
The inside diameter ofaaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Login to View More

Abstract

The invention relates to a mass spectrometry instrument, in particular to an atmospheric pressure photo ionization source device for detecting volatile organic compounds in water. The device comprises a dynamic purging bubbling device and an atmospheric pressure photo ionization source. The dynamic purging bubbling device mainly comprises a small glass bottle, four capillary tubes, a bubbling bottle outlet and a constant-temperature water bath kettle. The atmospheric pressure photo ionization source comprises an ionization source cavity, a vacuum ultraviolet lamp, a repulsion electrode, a focusing electrode, a transmission electrode, a mass spectrum sample injection metal capillary tube, a reagent gas sample injection port, a high-humidity sample inlet and a supplementary gas inlet. And the high-humidity sample gas blown out of the bubbling bottle completely enters the atmospheric pressure photo ionization source. According to the invention, the detection stability is improved, and the influence of a matrix in water on sample detection is very small; the absorption of neutral molecules to photons and consumption of reagent ions are reduced; the ionization efficiency can be greatly improved by introducing the reagent gas. The designed atmospheric pressure photo ionization source can realize rapid and high-sensitivity detection of a high-humidity sample.

Description

technical field [0001] The invention relates to a mass spectrometer analysis instrument, in particular to an atmospheric pressure photoionization source device for detecting volatile organic compounds in water. Background technique [0002] With the development of industry and the growth of population, water pollution has become a prominent worldwide problem. The safety of drinking water, and all water resources actually or potentially designated for drinking, needs to be assessed to ensure public health. The Minnesota State Department of Health has established drinking water standards for health risk limits for 23 VOCs. Currently, the U.S. Environmental Protection Agency (EPA) recommends purge-and-trap GC-MS and static or dynamic headspace GC as the standard method for evaluating VOCs in water. In my country's national standard GB / T5750.8-2006 "Standard Examination Methods for Drinking Water—Organic Matter Index", the off-line analysis method based on gas chromatography i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01J49/16H01J49/04H01J49/06
CPCH01J49/161H01J49/0404H01J49/045H01J49/067
Inventor 李海洋吴称心侯可勇陈平文宇轩万宁波
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com