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Online monitoring system and method for intermediate volatile organic compounds (IVOCs) in atmosphere

A volatile organic compound and monitoring system technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as the inability to track IVOC concentration changes in real time

Pending Publication Date: 2017-08-18
INST OF CHEM CHINESE ACAD OF SCI
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Problems solved by technology

At present, the domestic detection method for gas-phase IVOCs mainly adopts the method of sampling separately with the adsorption tube first, and then using the thermal analyzer and GC-MS to analyze the samples collected by the adsorption tube offline, but it cannot track the concentration of IVOCs in the atmosphere in real time. Variety

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  • Online monitoring system and method for intermediate volatile organic compounds (IVOCs) in atmosphere
  • Online monitoring system and method for intermediate volatile organic compounds (IVOCs) in atmosphere

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Embodiment Construction

[0048] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope of the present invention.

[0049] An online monitoring system for moderate VOCs such as figure 1 As shown, the on-line monitoring system includes a sampling device, a sample loading and sampling device and a detection device;

[0050] The sampling device includes a particle and ozone removal device 1, a gas mixing chamber 2, two gas flow rate controllers 4 and 8, a first gas circuit pipeline 3, two solenoid valves 5 and 7, a standard gas generator 9 and The first sampling pump 6; the p...

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Abstract

The invention discloses an online monitoring system for intermediate volatile organic compounds (IVOCs) and an online monitoring method for monitoring the concentration of IVOCs in atmosphere by adopting the online monitoring system. The online monitoring system comprises a sample feeding device, a sample loading and sampling device and a detection device. The device can realize the continuous detection on IVOCs in atmosphere. The monitoring method is realized on the basis of the online monitoring system. The monitoring method comprises the following steps: (1) mixing to-be-detected gases and (2) continuously feeding samples, sampling and detecting the gas mixture. The online monitoring system is small-size, simple in operation and low in cost. The variation tendency of IVOCs in the atmosphere can be known through the detection of the online monitoring system.

Description

technical field [0001] The invention relates to a monitoring system for trace gases in the atmosphere, in particular to an on-line monitoring system and a monitoring method for medium volatile organic compounds in the atmosphere. Background technique [0002] Due to the different effective saturation concentrations (C*) in the atmosphere, organic compounds can be divided into the following categories: semi-volatile organic compounds (semi-volatility organic compounds, SVOCs), whose effective saturation concentration range is 10 -1 μg / m 3 <C*<10 3 μg / m 3 ; Medium-volatile organic compounds (intermediate-volatility organic compounds, IVOCs), the effective saturation concentration range of 10 3 μg / m 3 <C*<10 6 μg / m 3 ; Volatile Organic Compounds (Volatile Organic Compounds, VOCs), the effective saturation concentration range is C*>10 6 μg / m 3 . At present, the determination of organic components and content in China is mainly for VOCs, because the boilin...

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0011G01N33/0047
Inventor 王炜罡李俊玲葛茂发李坤
Owner INST OF CHEM CHINESE ACAD OF SCI
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