CN103515186B - A kind of ion mobility spectrometry gas control method in the standby state - Google Patents
A kind of ion mobility spectrometry gas control method in the standby state Download PDFInfo
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- CN103515186B CN103515186B CN201210222314.7A CN201210222314A CN103515186B CN 103515186 B CN103515186 B CN 103515186B CN 201210222314 A CN201210222314 A CN 201210222314A CN 103515186 B CN103515186 B CN 103515186B
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Abstract
一种离子迁移谱在待机状态下的气体控制方法，采用间歇供气的方式，控制供气的时间长度，控制供气时间与停气时间的比例，维持离子迁移谱在合适的待机状态，以便快速恢复进入工作状态。这种待机状态下的气体控制方法，简单可行，自动控制，可以提高离子迁移谱仪器中干燥管的寿命。A gas control method for ion mobility spectrometry in a standby state, using intermittent gas supply, controlling the length of gas supply time, controlling the ratio of gas supply time to gas stop time, and maintaining ion mobility spectrometry in a suitable standby state, so that Quickly get back into working order. The gas control method in the standby state is simple and feasible, and the automatic control can improve the service life of the drying tube in the ion mobility spectrometer.
Description
技术领域technical field
本发明属于化学分析领域离子迁移谱的分析技术，具体是一种离子迁移谱在待机状态下的气体控制方法。The invention belongs to the analysis technology of ion mobility spectrometry in the field of chemical analysis, in particular to a gas control method of ion mobility spectrometry in a standby state.
背景技术Background technique
采用离子迁移谱技术进行样品分析时，需要通过仪器内部的供气泵、经干燥管来源源不断地产生洁净的空气，提供分析必须的漂气和载气，保证离子迁移谱的正常分析状态。即使是待机状态下，也要开启供气泵，维持洁净空气来吹洗仪器。When ion mobility spectrometry is used for sample analysis, it is necessary to continuously generate clean air through the air supply pump inside the instrument and through the drying tube to provide the necessary drift gas and carrier gas for analysis to ensure the normal analysis status of ion mobility spectrometry. Even in standby mode, the air supply pump should be turned on to maintain clean air to purge the instrument.
干燥管内的干燥剂容量有限，在供气泵连续使用的情况下，需要频繁更换干燥剂，以保持离子迁移谱能够正常分析。如果关闭供气泵而长时间待机，再次进行分析之前，需要用洁净空气长时间吹扫，才能恢复离子迁移谱、进入正常分析状态，所以在待机状态下，维持离子迁移谱内部洁净，减少干燥管更换周期，就需要待机状态下的气体控制方法。The capacity of the desiccant in the drying tube is limited. In the case of continuous use of the air supply pump, the desiccant needs to be replaced frequently to maintain the normal analysis of the ion mobility spectrometer. If you turn off the air supply pump and stand by for a long time, before analyzing again, you need to blow clean air for a long time to restore the ion mobility spectrum and enter the normal analysis state. Therefore, in the standby state, keep the inside of the ion mobility spectrometer clean and reduce the drying time To change the cycle, a gas control method in standby mode is required.
因此本发明通过一种离子迁移谱在待机状态下的气体控制方法，解决上述问题。Therefore, the present invention solves the above-mentioned problems through a gas control method of ion mobility spectrometry in a standby state.
发明内容Contents of the invention
本发明的目的在于提供一种离子迁移谱在待机状态下的气体控制方法。为达到上述目的，采用间歇供气的方式，控制供气的时间长度，控制供气时间与停气时间的比例，维持离子迁移谱在合适的待机状态，以便快速恢复进入工作状态。The object of the present invention is to provide a gas control method for ion mobility spectrometry in a standby state. In order to achieve the above purpose, the intermittent gas supply method is adopted to control the length of the gas supply time, control the ratio of the gas supply time to the gas stop time, and maintain the ion mobility spectrometer in a suitable standby state, so as to quickly return to the working state.
间歇供气的方式中，控制供气的时间长度，时间长度为5-120分钟；间歇供气方式中，控制供气时间与停气时间的比例为1:0.1至1:8。In the intermittent air supply mode, control the length of the air supply time, and the time length is 5-120 minutes; in the intermittent air supply mode, control the ratio of the air supply time to the air stop time from 1:0.1 to 1:8.
在间歇供气的过程中，控制供气的时间长度为15-60分钟，控制供气时间与停气时间的比例为1:0.2至1:4。In the process of intermittent gas supply, the length of the gas supply is controlled to be 15-60 minutes, and the ratio of the gas supply time to the gas stop time is 1:0.2 to 1:4.
这种待机状态下的气体控制方法，简单可行，自动控制，可以提高离子迁移谱仪器中干燥管的寿命。The gas control method in the standby state is simple and feasible, and the automatic control can improve the service life of the drying tube in the ion mobility spectrometer.
具体实施方式Detailed ways
实施例1：Example 1:
对比：离子迁移谱在工作状态下，用于TNT的检测，连续提供空气为载气和漂气；离子迁移谱在待机状态下，连续通入空气；干燥管的使用寿命10天；Contrast: The ion mobility spectrometer is used for the detection of TNT in the working state, and air is continuously provided as the carrier gas and drift gas; the ion mobility spectrometer is in the standby state, and the air is continuously fed in; the service life of the drying tube is 10 days;
本发明：this invention:
离子迁移谱在工作状态下，用于TNT的检测，连续提供空气为载气和漂气；Ion mobility spectrometry is used for the detection of TNT under working conditions, and air is continuously provided as carrier gas and drift gas;
离子迁移谱在待机状态下，采用间歇供气(空气)的方式，控制供气的时间长度为15分钟，控制停气时间为3分钟，供气时间与停气时间的比例为1:0.2，在间歇供气的时间内，可以提高干燥管的使用寿命1.2倍。Ion mobility spectrometry is in the standby state, using intermittent gas supply (air), the control of the gas supply time is 15 minutes, the control gas stop time is 3 minutes, the ratio of the gas supply time to the gas stop time is 1:0.2, During the time of intermittent air supply, the service life of the drying tube can be increased by 1.2 times.
恢复持续供气(空气)20分钟后，离子迁移谱可以正常分析样品。After 20 minutes of resuming the continuous gas supply (air), the ion mobility spectrometer can analyze the sample normally.
实施例2：Example 2:
对比：离子迁移谱在工作状态下，用于TNT的检测，连续提供空气为载气和漂气；离子迁移谱在待机状态下，连续通入空气；干燥管的使用寿命10天；Contrast: The ion mobility spectrometer is used for the detection of TNT in the working state, and air is continuously provided as the carrier gas and drift gas; the ion mobility spectrometer is in the standby state, and the air is continuously fed in; the service life of the drying tube is 10 days;
本发明：this invention:
离子迁移谱在工作状态下，用于TNT的检测，连续提供空气为载气和漂气；Ion mobility spectrometry is used for the detection of TNT under working conditions, and air is continuously provided as carrier gas and drift gas;
离子迁移谱在待机状态下，采用间歇供气(空气)的方式，控制供气的时间长度为20分钟，控制停气时间为40分钟，供气时间与停气时间的比例为1:2，在间歇供气的时间内，可以提高干燥管的使用寿命3倍。Ion mobility spectrometry is in the standby state, using intermittent gas supply (air), the length of the gas supply control is 20 minutes, the control gas stop time is 40 minutes, the ratio of the gas supply time to the gas stop time is 1:2, During the time of intermittent air supply, the service life of the drying tube can be increased by 3 times.
恢复持续供气(空气)20分钟后，离子迁移谱可以正常分析样品。After 20 minutes of resuming the continuous gas supply (air), the ion mobility spectrometer can analyze the sample normally.
实施例3：Example 3:
对比：离子迁移谱在工作状态下，用于TNT的检测，连续提供空气为载气和漂气；离子迁移谱在待机状态下，连续通入空气；干燥管的使用寿命10天；Contrast: The ion mobility spectrometer is used for the detection of TNT in the working state, and air is continuously provided as the carrier gas and drift gas; the ion mobility spectrometer is in the standby state, and the air is continuously fed in; the service life of the drying tube is 10 days;
本发明：this invention:
离子迁移谱在工作状态下，用于TNT的检测，连续提供空气为载气和漂气；Ion mobility spectrometry is used for the detection of TNT under working conditions, and air is continuously provided as carrier gas and drift gas;
离子迁移谱在待机状态下，采用间歇供气(空气)的方式，控制供气的时间长度为60分钟，控制停气时间为240分钟，供气时间与停气时间的比例为1:4，在间歇供气的时间内，可以提高干燥管的使用寿命5倍。Ion mobility spectrometry is in the standby state, using intermittent gas supply (air), the length of the gas supply control is 60 minutes, the control gas stop time is 240 minutes, and the ratio of the gas supply time to the gas stop time is 1:4. During the time of intermittent air supply, the service life of the drying tube can be increased by 5 times.
恢复持续供气(空气)40分钟后，离子迁移谱可以正常分析样品。After 40 minutes of resuming the continuous gas supply (air), the ion mobility spectrometer can analyze the sample normally.
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