Solid Sample Laser Ablation Quantification Without Pre-Treatment
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Solution Overview
Problem
Existing methods for analyzing solid samples, such as LA-ICP-OES and LA-ICP-MS, require pre-treatments like mixing resin powder with the sample and heating, making them cumbersome and affecting reproducibility, especially for powder samples.
Innovation Solution
An analysis method involving creating a regression equation based on signal intensity and removal volume using standard sample films with varying concentrations or thicknesses, without the need for pre-treatments, to calculate the amount of the analysis object in a solid sample.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resin powder and powder sample are mixed and heated to form a green compact, then reproducibility of analysis is improved, but process complexity and time consumption increase
Solution Approach 1:
The invention extracts and eliminates the resin powder mixing and heating steps from the analysis process. By using the sample as-is without forming a green compact, the method removes the complex pre-treatment while maintaining analysis reliability through direct laser ablation of the original sample structure.
Solution Approach 2:
Instead of transforming the sample into a green compact before analysis, the invention inverts the approach by analyzing the sample in its original state. This inversion eliminates the need for heating and resin mixing, reducing process complexity while maintaining measurement reliability.
2Reliability
If resin powder and powder sample are mixed and heated to form a green compact, then analysis reproducibility is improved, but analysis time and energy consumption increase
Solution Approach 1:
The invention removes the time-consuming steps of mixing resin powder and heating to form green compacts. By skipping these pre-treatment operations, the method significantly reduces analysis time while maintaining reproducibility through direct analysis of the original powder sample.
Solution Approach 2:
The invention eliminates the need for preliminary actions of mixing and heating by analyzing the powder sample directly. This removes the time investment required for green compact formation while maintaining measurement reliability through direct laser ablation.
3Ease of operation
If simple analysis method without pre-treatment is used, then ease of operation is improved, but measurement reliability may deteriorate
Solution Approach 1:
The invention allows the sample to be analyzed in its original state without requiring external transformation or pre-treatment. The sample itself serves as the direct target for laser ablation, eliminating the need for resin mixing and heating while maintaining measurement reliability through the inherent properties of the original sample structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables simple and reproducible analysis of solid samples without pre-treatments, maintaining sample integrity and improving measurement reliability.
Implementation Method 1
a part of the solid sample is evaporated from the sample surface to produce gas or fine particles derived from the solid sample
Implementation Method 2
a part of the solid sample is evaporated from the sample surface to produce gas or fine particles derived from the solid sample
Implementation Method 3
characteristic emission for an element in the solid sample is generated, or a part of the solid sample is evaporated from the sample surface
Implementation Method 4
the gas or the fine particles derived from the solid sample during the irradiation with laser light are introduced into an inductively coupled plasma, and are analyzed with a photodetector or a mass spectrometer
Data Source
AI summary
An object of the present invention is to provide an analysis method in which analysis of an analysis object in a solid sample can be simply performed. An analysis method according to the present invention includes: creating a regression equation based on a value of a signal intensity obtained by performing any one of predetermined operation 1, 2, 3, or 4 and an amount of an analysis object that is removed by laser light irradiation in a standard sample film; and using the regression equation to calculate an amount of the analysis object that is removed by laser light irradiation in a solid analysis sample including the analysis object.