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Sample feeder device of solid body and liquid example

A technology for sampling devices and liquid samples, which is applied in the field of sampling devices for ion mobility spectrometers, can solve the problems that solid and liquid samples cannot be directly analyzed, and cannot be suitable for on-site rapid analysis, etc., and achieve the effect of reasonable structure and wide applicability

Inactive Publication Date: 2008-01-30
大连金瑞威达科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Generally, it is only suitable for direct analysis of gaseous samples, not solid and liquid samples
In actual work, many solid and liquid samples require rapid and on-site analysis and detection by ion mobility spectrometers. Usually, liquid headspace gas (vapor from liquid volatilized into the air) is used for sample injection analysis, and solid samples need to be heated and manually processed. sample analysis, can not meet the requirements of on-site rapid analysis

Method used

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  • Sample feeder device of solid body and liquid example

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Smear the TNT solid sample on the filter paper sample attachment sheet 6 with a thickness of 1 mm, then insert the sample attachment sheet 6 into the sample tank 1, push the air inlet pipe 3 by hand to clamp and fix the sample attachment sheet 6 on the sample slot 6 Between one side metal plate and the air inlet pipe 3, heat the sample tank to 300°C, and at the same time blow clean air into the air inlet pipe 3, the blown air passes through the sample attachment sheet 6, and sends the TNT vapor sample from the air outlet pipe 5 to Analyze in the ion mobility spectrometer to obtain the signal and analysis results of the TNT sample. Wherein, the gas flow rate after inserting the sample attachment sheet 6 is 30% lower than that before inserting.

Embodiment 2

[0027] Soak the benzene solution on the non-woven sample attachment sheet 6 with a thickness of 30 mm, then insert the sample attachment sheet 6 into the sample tank 1, and push the air intake pipe 3 by electric means to clamp and fix the sample attachment sheet 6 in the sample slot Between the metal plate on one side of 6 and the air inlet pipe 3, the temperature of the sample tank 1 is room temperature (20°C), and at the same time, clean air is blown into the air inlet pipe 3, and the air blown in passes through the sample attachment sheet 6, and is blown from the air outlet pipe 5 The vapor sample of benzene is sent to the ion mobility spectrometer for analysis, and the signal and analysis result of the benzene sample are obtained. Wherein, the gas flow rate after inserting the sample attachment sheet 6 is 60% lower than that before inserting.

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Abstract

The invention provides a sampling introduction device for solid and fluid which has the structure that a sample well used for inserting a sample coherence sheet is opened with two through holes coaxially on the two arthropleuras and one of the through holes is connected with an inlet duct controller; an inlet duct is arranged on the central axis of the hole and the controller in an inserting way, and controlled by the gas inlet controller, which can move along the central axis under the controlling, thus making the sample attachment plate reach the other arthropleuras of the sample well; an air outlet is fixedly connected with the out side of the other through hole, the other end of the air outlet is connected with an analytical apparatus; an air pump is connected with an end of the inlet duct to insufflate the sample from the sample attachment plate into the air outlet. The heating and sampling device of the invention has the advantages of reasonable structure and extensive applicability, sample offering for various kinds of gas analyzer.

Description

technical field [0001] The invention relates to a sampling device of an ion mobility spectrometer, in particular, it belongs to a device for converting solid and liquid samples into gas for sampling in gas analysis instruments. Background technique [0002] Ion Mobility Spectrometry (IMS) technology is a separation and detection technology that appeared abroad in the 1970s, and was applied to on-site analysis and detection in the 1980s. The gas sample is ionized to form ions, which then drift in an applied electric field. Due to the different mobilities of different samples, the different components in the sample are separated in the transfer tube, and in general, heavier molecules travel slower than lighter molecules. In this way, the composition of the sample can be known from the measured migration time. [0003] Generally, it is only suitable for direct analysis of gas samples, but not for solid and liquid samples. In actual work, many solid and liquid samples require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N27/622
Inventor 李京华邵英光王海龙李芳李海洋
Owner 大连金瑞威达科技有限公司
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