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Device and method for detecting volatile organic compound

A volatile organic compound, any direction technology, applied in the fields of chemistry and electronics, can solve the problems of slow heating speed and small analysis throughput, and achieve the effect of improving the analysis speed and improving the detection throughput.

Active Publication Date: 2010-08-11
SINOMS BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, there is also a method of using direct injection rod mass spectrometry to detect volatile organic compounds, but whether DEP or DIP is used, electric heating is used, the heating speed is slow, and only one sample can be placed for analysis at a time. Small

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  • Device and method for detecting volatile organic compound
  • Device and method for detecting volatile organic compound
  • Device and method for detecting volatile organic compound

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Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides a method for detecting volatile organic compounds, the method is:

[0033] First, spot the sample on a stainless steel plate similar to the MALDI target plate. One stainless steel plate can spot hundreds of samples without other auxiliary substrates;

[0034] Then put the target board on the multi-dimensional mobile platform controlled by the computer and fix it;

[0035] Then use the infrared laser to irradiate the sample on the target plate to analyze the sample, and the analyzed sample enters the mass spectrometer sampling capillary;

[0036] Finally, the electron bombardment source is used for ionization detection.

[0037] The flow chart of the method for detecting volatile organic compounds is as follows: figure 2 shown, including the following steps:

[0038] Step 1, place the sample of volatile organic compounds on the target plate;

[0039] Step 2, place the target plate with the sample on the fixed device of the multi-dimensional ...

Embodiment 2

[0050] The difference between this embodiment and Embodiment 1 is that the multi-dimensional mobile platform is composed of multi-layer platforms, the topmost platform of the multi-layer platform is controlled by a computer to move in any direction, and the rest of the platforms except the topmost layer Fixed.

Embodiment 3

[0052] The device for detecting volatile organic compounds described in this embodiment can be used for imaging analysis of small molecules. When the sample is analyzed on the target plate, the mass spectrogram of the molecule can be obtained by detecting it on a mass spectrometer (EI source mass spectrometer or CI source mass spectrometer). According to the molecular weight and intensity of the mass spectrogram, the software can be used to express it in different colors, and analyze the molecular mass. All mass spectrum peaks can be processed by graphics software to obtain the image of the molecule. If the above-mentioned device is used for leaf imaging, there is no need to pre-treat the leaves, just place the leaves on the target plate and fix them, use the computer to perform laser analysis mass spectrometry sampling and analysis of the leaves in different directions according to the program, and finally all the obtained mass spectra Use the processing software to get the i...

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Abstract

The invention discloses a device for detecting volatile organic compound, comprising a target plate, a multi-dimensional moving platform, a laser and a mass spectrometer. The target plate is used for igniting a volatile organic compound sample; the multi-dimensional moving platform is used for supporting the target plate and is controlled by a computer to drive the target plate for move in any direction; the laser is used for emitting laser to irradiate the volatile organic compound sample on the target plate so that the volatile organic compound sample can be analyzed; the mass spectrometer is used for ionizing the analyzed volatile organic compound sample and generating a mass spectrum. Adopting the multi-dimensional moving platform which is accurately controlled by the computer to drive the target plate for move in any direction, the device can be used for detecting a plurality of volatile organic compound samples so as to improve the pass rate of the detection of the volatile organic compound samples. In addition, adopting the high heat-radiation laser to analyze the volatile organic compound sample, the device can greatly improve the volatile organic compound sample analyzing speed.

Description

technical field [0001] The invention belongs to the fields of chemistry and electronics, and relates to a device and method for detecting volatile organic compounds. Background technique [0002] Volatile organic compounds are often expressed as VOC (Volatile Organic Compounds, VOC). There are several definitions of VOC. For example, the US ASTM D3960-98 standard defines VOC as any organic compound that can participate in atmospheric photochemical reactions; the US Federal Environmental Protection Agency (EPA ) defines VOC as any carbon compound that participates in atmospheric photochemical reactions except CO, CO2, H2CO3, metal carbides, metal carbonates and ammonium carbonate; the World Health Organization (WHO, 1989) defines VOC as having a melting point lower than room temperature and A general term for volatile organic compounds with a boiling point between 50-260°C. VOC includes various organic compounds that can volatilize at room temperature. There are more than 10...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/64
Inventor 聂磊徐国宾潘鑫渊杨芃原
Owner SINOMS BIOTECH CO LTD
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