Vehicle-mounted chemical ionization mass spectrometry cruising detection device and method for atmospheric VOCs (volatile organic compounds)

Abstract

The invention relates to a vehicle-mounted chemical ionization mass spectrometry cruising detection device and method for atmospheric VOCs (volatile organic compounds). The device comprises a navigation vehicle, a chemical ionization mass spectrometer, a shock absorption base, an external sampling head, an internal sampling tube, a GPS, an exhaust pipe, an expanded battery pack, an uninterruptiblepower supply and a data monitoring unit. According to the detection method, atmospheric VOCs are measured through chemical ionization mass spectrometry on a cruising vehicle while the cruising vehicle walks, and a cruising detection result is displayed on an electronic map in real time by fusing mass spectrometry data, GPS position information and the electronic map. The defect that low-concentration large-scale investigation cannot be conducted with conventional technology is overcome, and rapid large-scale investigation of atmospheric VOCs pollution sources is realized.

Description

technical field [0001] The invention belongs to the field of analysis and detection, and in particular relates to a vehicle-mounted chemical ionization mass spectrometry detection device and method for atmospheric volatile organic compounds. Background technique [0002] Volatile organic compounds (VOCs) themselves are a kind of pollutants. Long-term exposure to high concentrations has risks of death, teratogenicity, carcinogenicity, and mutagenesis. Moreover, VOCs in the atmosphere will undergo photochemical reactions under the action of ultraviolet rays from the sun, and produce ozone and carbon monoxide. Secondary pollutants such as secondary organic aerosols. Therefore, the control of VOCs emissions is the core focus of the environmental protection department to solve residents' complaints, exceed the ozone standard, and control the formation of haze weather. [0003] In order to save costs, VOCs emission companies often do not install or open treatment equipment as req...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the deficiencies of the existing VOCs pollution source investigation methods of the environmental protection department, and to provide a vehicle-mounted chemical ionization mass spectrometry mobile detection device and detection method for atmospheric VOCs, which can carry chemical ionization with extremely low detection limits through the mobile vehicle. The mass spectrometer and related accessories realize on-site real-time detection of VOCs pollution sources, and through the navigation process, the VOCs composition and concentration results in different locations are integrated into the electronic map, so as to realize the investigation and visual display of large-scale pollution sources, and contribute to environmental protection The department provides efficient and accurate new devices and new methods to solve the problem of VOCs sneak discharge and mass complaints, and provides a new tool for mobile mass spectrometry to win the blue sky defense battle

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