Gas analyzer for detecting indole and 3-methylindole

Abstract

The utility model discloses a gas analyzer for detecting indole and 3-methylindole. The gas analyzer comprises a preprocessor, an ultraviolet differential absorption spectrometry analyzer and a sampling control and data processing unit, the preprocessor comprises a particulate matter filter and a heater which are connected through a pipeline; the ultraviolet differential absorption spectrometry analyzer comprises a heating gas absorption cell connected with the heater, and the heating gas absorption cell is respectively connected with a spectrograph and an ultraviolet light source generation module through optical fibers. The problems of complicated operation steps and long time consumption of original gas chromatography, high performance liquid chromatography or liquid chromatography-mass spectrometry and the like can be solved, and the indole gas can be intuitively and qualitatively determined; one gas analyzer can be used for monitoring other indole derivative gases, so that the gas analyzer has multiple functions, the purchase cost of a user is reduced, social resources are saved, and convenience is brought to use of people.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a gas analyzer for detecting indole and 3-methylindole. Background Art

[0002] Indole and its derivatives (such as 3-methylindole) are an important class of organic compounds. They exist in the atmospheric environment as part of volatile organic compounds (VOCs) and may originate from various industrial processes, domestic waste disposal, and biological metabolic processes in nature. These compounds are not only harmful to human health but may also have adverse effects on the environment. Traditional detection methods such as gas chromatography, high-performance liquid chromatography, or liquid chromatography-mass spectrometry, while highly sensitive, are complex, time-consuming, and require high equipment costs. Therefore, developing a gas analyzer that can quickly and accurately detect indole and 3-methylindole is of great significance for improving detection efficiency and reducing costs. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a gas analyzer for detecting indole and 3-methylindole, which solves the problems of the existing detection devices being complicated to operate and time-consuming.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: A gas analyzer for detecting indole and 3-methylindole, comprising a preprocessor, an ultraviolet differential absorption spectrometry analyzer, and a sampling control and data processing unit;

[0005] The pre-processor includes a particulate filter and a heater connected by pipelines;

[0006] The ultraviolet differential absorption spectrometry analyzer includes a heating gas absorption cell connected to the heater, and the heating gas absorption cell is connected to the spectrometer and the ultraviolet light source generation module respectively through optical fibers;

[0007] The sampling control and data processing unit includes the single-board computer main control board, a flow metering unit and a sampling pump. One end of the flow metering unit is connected to the heated gas absorption pool, and the other end is connected to the input end of the sampling pump. The single-board computer main control board is electrically connected to the flow metering unit, sampling pump, ultraviolet light source generation module, spectrometer and heater.

[0008] Preferably, the sampling control and data processing unit further includes a clean air generator and a zero calibration solenoid valve arranged on the air path.

[0009] Preferably, the particulate filter adopts a sand core structure and does not adsorb gas. A self-temperature control module is provided in the heater, which adopts the ambient temperature and controls the heating temperature to be higher than the ambient temperature.

[0010] Preferably, the heated gas absorption cell is placed in an insulation box with a heating device, the heating device is electrically connected to the single-board computer main control board, and the single-board computer main control board measures and controls the temperature of the heated gas absorption cell to be higher than the ambient temperature.

[0011] Preferably, the ultraviolet light source generating module uses a pulse light source with adjustable emission power, and the spectral range is between 190-2200nm; the spectrometer is a miniature ultraviolet-visible spectrometer with an attenuator, and the detection spectral range is 180-490nm.

[0012] Preferably, it also includes a positioning unit electrically connected to the single-board computer main control board, and the positioning unit is provided with a Beidou positioning module for real-time positioning and detection location information, and sending the bundled positioning information and combined detection result data to the management and control platform in real time.

[0013] Beneficial effects

[0014] The utility model provides a gas analyzer for detecting indole and 3-methylindole, which has the following features:

[0015] Beneficial effects:

[0016] The device combines a preprocessor with a UV differential absorption spectrometer. A particulate filter and heater are configured to pre-treat the sample gas. The heated gas absorption cell and spectrometer, combined with a UV light source generator, enable rapid and accurate detection of indole and 3-methylindole. This solves the complex and time-consuming process of conventional gas chromatography, high-performance liquid chromatography, or liquid chromatography-mass spectrometry (LC-MS / MS), enabling intuitive qualitative analysis of indole gas.

[0017] One gas analyzer can be used to monitor other indole derivative gases. One device can be used for multiple purposes, which reduces the user's purchase cost, saves social resources, and brings convenience to people's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1, the utility model provides a technical solution: a gas analyzer for detecting indole and 3-methylindole, comprising a preprocessor, an ultraviolet differential absorption spectrometry analyzer, and a sampling control and data processing unit;

[0021] The pre-processor includes a particulate filter and a heater connected by pipelines;

[0022] The ultraviolet differential absorption spectrometry analyzer includes a heating gas absorption cell connected to the heater, and the heating gas absorption cell is connected to the spectrometer and the ultraviolet light source generation module respectively through optical fibers;

[0023] The sampling control and data processing unit includes the single-board computer main control board, a flow metering unit and a sampling pump. One end of the flow metering unit is connected to the heated gas absorption pool, and the other end is connected to the input end of the sampling pump. The single-board computer main control board is electrically connected to the flow metering unit, sampling pump, ultraviolet light source generation module, spectrometer and heater.

[0024] This embodiment is further configured such that the sampling control and data processing unit further includes a clean air generator and a zero calibration solenoid valve provided on the air path.

[0025] This embodiment is further configured such that the particulate filter adopts a sand core structure and does not adsorb gas, and a self-controlling temperature module is provided in the heater, which adopts the ambient temperature and controls the heating temperature to be higher than the ambient temperature.

[0026] This embodiment is further configured such that the heated gas absorption pool is placed in an insulation box with a heating device, the heating device is electrically connected to the single-board computer main control board, and the single-board computer main control board measures and controls the temperature of the heated gas absorption pool to be higher than the ambient temperature.

[0027] This embodiment is further configured such that the ultraviolet light source generating module uses a pulse light source with adjustable emission power, and the spectral range is between 190-2200nm; the spectrometer is a miniature ultraviolet-visible spectrometer with an attenuator, and the detection spectral range is 180-490nm.

[0028] This embodiment is further configured to include a positioning unit electrically connected to the single-board computer main control board, and the positioning unit is provided with a Beidou positioning module for real-time positioning and detection location information, and sending the bundled positioning information and combined detection result data to the management and control platform in real time.

[0029] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0030] Example: Ambient air passes through a particulate filter and enters the heater of a preprocessor. The heater temperature is higher than the ambient temperature. The preheated gas to be measured enters the heated gas absorption cell of the analyzer. After being absorbed by the ultraviolet beam, it enters the gas sampling pump through a flow metering unit and is finally discharged into the atmosphere.

[0031] The ultraviolet light emitted by the ultraviolet light source module is introduced into the heated gas absorption cell via optical fiber. After the light beam is absorbed by indole and 3-methylindole, the resulting ultraviolet light is then introduced into the spectrometer via optical fiber. The spectral signal is converted and transmitted to the single-board computer main control board. The single-board computer analyzes the absorption spectrum to obtain the gas concentrations of indole and 3-methylindole.

[0032] The single-board computer and main control board detect the ambient temperature, gas temperature and pressure, detect and control the sampling flow to achieve constant current sampling;

[0033] The single-board computer and main control board automatically control the solenoid valve development according to the set zeroing and calibration intervals, completing zeroing and automatic calibration of indole and 3-methylindole;

[0034] The real-time positioning information of the Beidou positioning unit is documented together with the detected indole and 3-methylindole concentration results, and sent to the data management and control platform in real time.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas analyzer for detecting indole and 3-methylindole, characterized in that: It includes a preprocessor, an ultraviolet differential absorption spectrometry analyzer, and a sampling control and data processing unit; The pre-processor includes a particulate filter and a heater connected by pipelines; The ultraviolet differential absorption spectrometry analyzer includes a heating gas absorption cell connected to the heater, and the heating gas absorption cell is connected to the spectrometer and the ultraviolet light source generation module respectively through optical fibers; The sampling control and data processing unit includes the single-board computer main control board, a flow metering unit and a sampling pump. One end of the flow metering unit is connected to the heated gas absorption pool, and the other end is connected to the input end of the sampling pump. The single-board computer main control board is electrically connected to the flow metering unit, sampling pump, ultraviolet light source generation module, spectrometer and heater.

2. A gas analyzer for detecting indole and 3-methylindole according to claim 1, characterized in that, The sampling control and data processing unit further comprises a clean air generator and a zeroing calibration solenoid valve arranged on the air path.

3. A gas analyzer for detecting indole and 3-methylindole according to claim 1, characterized in that, The particle filter adopts a sand core structure and does not adsorb gas. A self-temperature control module is provided in the heater, which adopts the ambient temperature and controls the heating temperature to be higher than the ambient temperature.

4. A gas analyzer for detecting indole and 3-methylindole according to claim 1, characterized in that, The heated gas absorption cell is placed in an insulation box with a heating device, the heating device is electrically connected to the single-board computer main control board, and the single-board computer main control board measures and controls the temperature of the heated gas absorption cell to be higher than the ambient temperature.

5. A gas analyzer for detecting indole and 3-methylindole according to claim 1, characterized in that: The ultraviolet light source generating module uses a pulse light source with adjustable emission power, and the spectrum range is between 190-2200nm; the spectrometer is a miniature ultraviolet-visible spectrometer with an attenuator, and the detection spectrum range is 180-490nm.

6. A gas analyzer for detecting indole and 3-methylindole according to claim 1, characterized in that: It also includes a positioning unit electrically connected to the single-board computer main control board. The positioning unit is equipped with a Beidou positioning module for real-time positioning and detection location information, and sending the combined detection result data of the bundled positioning information to the management and control platform in real time.

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