Hand-hold sampling apparatus and method for preventing sampling vector form deforming

Abstract

The invention discloses a handheld wiping sampling device used for preventing the deformation of a sample carrier when an ion mobility spectrometer is used for detecting explosives and drugs, and a method thereof. The device comprises a shell body; the back part of the shell body is a handheld part; the front part of the shell body is a wiping sampling part; a sampling wiping surface is arranged below the wiping sampling part; the sample carrier can be fully contacted with the surface of an object when being wiped, thereby improving the wiping efficiency; correspondingly, a small sample feeding port can be arranged on a detector, thereby saving a great number of sample carriers, avoiding the difficultly recovered deformation and creases generated by the sample carriers, ensuring the follow-on sample feeding operation, improving the sampling and the sample feeding efficiency and improving the detection performance of a sample to be detected. The method of the invention comprise the following steps: attaching the sample carrier to the sampling wiping surface; fixing the front end part of the sample carrier through a front clamp fastener; and the rear end part of the sample carrier is fixed by a back clamp fastener. The method is simple and quick.

Description

technical field [0001] The invention relates to a sampling device and method, in particular to a hand-held wiping sampling device used for collecting surface samples of objects when an ion mobility spectrometer detects explosives and drugs. Background technique [0002] The explosives and narcotics detection instrument based on ion mobility spectrometry technology is a fast, sensitive and portable on-site detection instrument. The instrument has been applied to military and security inspection agencies, and can detect chemical poisons, explosives, drugs, etc. [0003] When the ion mobility spectrometer detects prohibited items, in addition to the gas sampling (commonly known as smell) method, the most commonly used method is the solid sampling method. That is, first wipe the surface of the object with a sampling carrier (such as a sampling carrier), collect explosives or drug particles on the sampling carrier, and then insert the sampling carrier into the instrument inlet f...

AI Technical Summary

Problems solved by technology

This not only wastes the sampling carrier, but more importantly, the large sample inlet has many defects: first, the heat is not concentrated, the heating efficiency is low, which affects the detection sensitivity of the instrument; second, the power consumption is large, the battery working time is shortened, and the battery needs to be replaced frequently , affecting the performance of the instrument

It is difficult for ordinary plant fiber paper to return to a straight state after being bent. For this reason, the device uses a special sampling "paper" (chemical polymer), which not only has high cost of use, but also has low sampling efficiency, which affects the detection performance of the instrument.

In addition, the wiping contact surface of the device is flat. When wiping the surface of an object with a certain degree of curvature, the sampling carrier cannot be fully contacted, which affects the wiping and sampling efficiency.

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