Gas chromatography-Mass Spectrometry-ion trap 240
Principle: mass spectrometry is through to ionize the sample with different (M / z) of the ion separation and analysis. First sample to be analyzed into a gaseous state and has certain energy (50 to 100eV) electron beam bombardment to generate different m / Z with positive charged ions, in under the action of the electric field to accelerate become fast moving particles, into the mass analyzer. These particles under electric and magnetic fields for use, separated according to the size of the mass to charge ratio (M / z) into the separation analyzer and mass to charge ratios and relative abundances. In the process of mass spectrometry analysis, the sample is introduced and gasification by gas chromatography. The sample is introduced into the ion source for ionization. After the ionization of the ions through the appropriate acceleration into the mass
nalyzer, according to different m/z. Then the detector generates a different signal which is analyzed.
The test of component: hydrocarbons, alcohols, acids, ketones, aromatic compounds, esters, ethers.
Test methods and sample requirements: the analysis of different organic compounds requires different derivatization methods, which require the separation and purification of organic reagents into the sample.
Test accuracy, detection limit, and other numerical: detection of the quality of the number range: 1~2000; detection range: full scan sensitivity: 1Pg; selection of ion detection sensitivity: 0.1pg
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Principle of mass spectrometry |
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Internal ion source working principle |
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Detection of Methamidophos |
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