Standard substance for carrying out micro-zone in-situ analysis on components of silicates and preparation method thereof

A standard material and in-situ analysis technology, applied in the direction of analysis of materials, preparation of test samples, material analysis through electromagnetic means, etc., can solve the problem that the minimum sampling volume of the analysis standard material cannot meet the requirements, etc.

Active Publication Date: 2017-12-29
NAT RESERACH CENT OF GEOANALYSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although different laboratories have developed a variety of LA-ICPMS quantitative calibration techniques in recent years, due to the limitation of the method principle, they must rely on

Method used

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  • Standard substance for carrying out micro-zone in-situ analysis on components of silicates and preparation method thereof
  • Standard substance for carrying out micro-zone in-situ analysis on components of silicates and preparation method thereof
  • Standard substance for carrying out micro-zone in-situ analysis on components of silicates and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The standard material uses the basalt powder described in Table 1 as the base material, and after the base material is melted and annealed, a glass sample block is obtained, and the glass sample block is used as a standard material for laser ablation plasma mass spectrometry Perform micro-area in situ multi-element analysis.

[0031] The preparation method of this standard substance comprises the steps:

[0032] (1) Take 1 kg of basalt powder as the base material, add distilled water to the base material, the quality of the added distilled water accounts for 5% of the total mass of the base material and distilled water; In a corundum crucible at 1550°C for 7 hours, pour the melt into a water pool and quench to obtain slag with a particle size of less than 0.5mm;

[0033] (2) After cleaning the slag obtained in step (1) with distilled water, dry it at 200°C for 3 hours, then ball mill it in an agate ball mill for 3 hours, pass through a 100 mesh sieve, and filter out cl...

Embodiment 2

[0037] The standard substance uses the syenite powder described in Table 1 as the base material, and after the base material is melted and annealed, a glass sample block is obtained, and the glass sample block is used as a standard material for laser ablation plasma Mass spectrometry for in situ multi-element analysis of microregions.

[0038] The preparation method of this standard substance comprises the steps:

[0039] (1) Take 1kg syenite powder as the base material, add distilled water into the base material, the quality of the added distilled water accounts for 6% of the total mass of the base material and distilled water; then add the mixed product of the base material and distilled water to the preheating In a corundum crucible at 1350°C, melt at 1600°C for 6 hours, pour the melt into a water pool and quench to obtain slag with a particle size of less than 0.5mm;

[0040] (2) After cleaning the slag obtained in step (1) with distilled water, dry it at 150°C for 4 hour...

Embodiment 3

[0044] The standard material uses the soil powder described in Table 1 as the base material, and after the base material is melted and annealed, a glass sample block is obtained, and the glass sample block is used as a standard material for laser ablation plasma mass spectrometry Perform micro-area in situ multi-element analysis.

[0045] The preparation method of this standard substance comprises the steps:

[0046] (1) Take 1kg of soil powder as the base material, add distilled water into the base material, the quality of the added distilled water accounts for 8% of the total mass of the base material and distilled water; In a corundum crucible at 1570°C for 6 hours, pour the melt into a water pool and quench to obtain slag with a particle size of less than 0.5mm;

[0047] (2) After cleaning the slag obtained in step (1) with distilled water, dry it at 200°C for 2 hours, then ball mill it in an agate ball mill for 4 hours, pass through a 100 mesh sieve, and filter out clink...

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Abstract

The invention provides a standard substance for carrying out micro-zone in-situ analysis on components of silicates and a preparation method thereof. The preparation method comprises the following steps: adopting any powder of basalt, syenite, soil or andesite as a basic material, carrying out melting treatment and annealing treatment on the basic material to obtain glass sample blocks, and adopting the glass sample blocks as a standard substance to carry out micro-zone in-situ multielement analysis by a laser-ablation plasma mass spectrometry. The melting treatment comprises the following steps: taking the basic material with the granularity of less than or equal to 200 meshes, and melting for 5-10 hours at the temperature of 1470-1650 DEG C, obtaining crushed slag and milling the crushed slag till the granularity is less than or equal to 100 meshes. The annealing treatment comprises the steps of pouring products obtained by melting treatment onto an iron plate, and annealing for 2-8 hours at the temperature of 700-900 DEG C to form glass sample blocks. The standard substance and the preparation method provided by the invention have the advantages that shown by check data, the uniformity meets the requirement of the standard substance for micro-zone in-situ analysis; and the stability of a glassy sample is good.

Description

technical field [0001] The invention belongs to the technical field of micro-area in-situ multi-element analysis by laser ablation plasma mass spectrometry (LA-ICPMS), and specifically relates to a silicate micro-area in-situ analysis component standard substance and a preparation method thereof. Background technique [0002] One of the important development trends in geoscience and environmental research is the transformation from the observation and representation of macroscopic phenomena to the acquisition and interpretation of microscopic information, or the combination of the two kinds of information. Laser ablation plasma mass spectrometry (LA-ICPMS) is a highly sensitive micro-area in situ multi-element analysis technique, and its detection limit of trace elements is as low as ng / g level. Together, they constitute the supporting system for the analysis of primary and secondary trace elements in the mineral micro-area of ​​the geoscience laboratory. According to LA-IC...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N27/62
CPCG01N1/28G01N27/628
Inventor 王广樊兴涛詹秀春胡明月
Owner NAT RESERACH CENT OF GEOANALYSIS
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