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Ionic liquid and application thereof in SEM-EDX detection as conductive treating agent

A SEM-EDX, ionic liquid technology, applied in ionic liquid and its application in SEM-EDX detection, can solve the problems of restricting the popularization and use of SEM-EDX, high cost, high technical difficulty, and achieves strong stability and cost. Inexpensive and wide-ranging effects

Inactive Publication Date: 2015-07-08
泽龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used method of using metal or carbon to conduct conductive treatment on insulating samples is technically difficult, and often requires special equipment and technical personnel in the laboratory; in addition, using metal or carbon to conduct conduction on insulating samples The cost of the processing method is expensive, which greatly limits the promotion and use of SEM-EDX detection

Method used

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  • Ionic liquid and application thereof in SEM-EDX detection as conductive treating agent
  • Ionic liquid and application thereof in SEM-EDX detection as conductive treating agent

Examples

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Effect test

Embodiment 1

[0030] The invention provides an ionic liquid, specifically, a 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid.

Embodiment 2

[0032] The invention also discloses the use of the 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid to conduct conductive treatment on insulating samples before SEM-EDX detection.

[0033] Generally, the 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid needs to be diluted during use, and the diluent used is ethanol and / or acetone; the 1-ethyl-3-methyl After the imidazolium tetrafluoroborate ionic liquid is mixed with the diluent, a diluent is formed;

[0034] In the diluent, the mass fraction of the 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid is any one of 0.01%, 0.1%, 0.5%, 1%, and 5%.

[0035] The use of diluent can reduce the viscosity of 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid, and can form a thinner ionic liquid film layer, which is more conducive to the subsequent SEM-EDX detection.

Embodiment 3

[0037] The present invention also provides a SEM-EDX detection method using the 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid as a conductive treatment agent, to be located in Sakurajima, Kagoshima County, Kyushu, Japan Take the SEM-EDX detection of volcanic ash collected from a volcano (E31°35′N 130°39′) as an example, including the following steps:

[0038] a. Determine the nature of the sample to be tested: there are 5 insulating samples (volcanic ash) to be tested, and the particle size of each volcanic ash is between 50 and 100 μm, that is, they are all greater than 10 μm, and they are all insulators. The volcanic ash is subjected to conductive treatment;

[0039] b. Preparation of ionic liquid diluent: at room temperature, mix 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid and diluent to form a diluent;

[0040] The diluent is a mixture of ethanol and acetone in an equal mass ratio; in the diluent, the mass fraction of the 1-ethyl-3-methylimidaz...

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Abstract

The invention relates to an ionic liquid which is a 1-ethyl-3-methylimidazole tertfluoborate ionic liquid with the molecular formula C6H11BF4N2. The 1-ethyl-3-methylimidazole tertfluoborate ionic liquid can be used as a conductive treating agent in SEM-EDX detection. The ionic liquid has the beneficial effects that conductive treatment with the conductive treating agent has the advantages of low cost and simple operation, and the application range of SEM-EDX detection is greatly expanded.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to an ionic liquid and its application in SEM-EDX detection. Background technique [0002] SEM is the abbreviation of scanning electron microscope. It mainly uses secondary electron signal imaging to observe the surface morphology of samples, and uses point-by-point imaging to obtain enlarged images. In actual use, SEM is often combined with EDX; EDX is energy dispersive The abbreviation of X-ray spectrometer, SEM and EDX are used together as scanning electron microscope energy spectrometer for energy spectrum analysis. [0003] When performing SEM-EDX detection, the sample to be tested needs to be conductive. Therefore, before observing the insulating sample, it is necessary to use metal or carbon to conduct conductive treatment on the insulating sample, and then observe after forming a conductive film of tens of nanometers. . At present, the commonly used method of using met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/58G01N23/22
CPCC07D233/58G01N23/22
Inventor 泽龙
Owner 泽龙
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