Element Analysis Zero-Point Correction from Transient Blank Data
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Solution Overview
Problem
Existing element analysis methods require a substantial waiting period for stabilization of gas generation from the crucible, leading to prolonged analysis times and decreased accuracy due to fluctuations in zero-point correction.
Innovation Solution
An element analysis method that sets zero-point correction based on measurement values in a transient state region, allowing immediate start of sample analysis without waiting for stabilization, using a gradient reduction region to determine the correction amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a predetermined standby time is set to wait for stabilization of gas generation from the crucible, then measurement accuracy is improved, but analysis time is prolonged
Solution Approach 1:
The patent applies preliminary action by performing blank measurement and determining zero-point correction amount before actual sample analysis. The system pre-characterizes the crucible's gas generation behavior through blank measurement, storing the correction data for immediate application during subsequent analyses, thus eliminating the need to wait for stabilization during each analysis cycle.
Solution Approach 2:
The patent uses copying by creating a reference model through blank measurement that replicates the crucible's gas generation characteristics. This reference data (zero-point correction amount) is then applied to subsequent sample measurements, allowing the system to compensate for crucible-derived gas without repeatedly waiting for stabilization periods.
2Measurement precision
If a predetermined standby time is set to wait for stabilization of gas generation, then zero-point correction accuracy is improved, but productivity is reduced
Solution Approach 1:
The system performs blank measurement and zero-point correction determination in advance, before actual sample analysis begins. This preliminary characterization of the crucible's gas generation behavior allows subsequent analyses to proceed immediately without waiting for stabilization, thereby improving throughput while maintaining accuracy.
Solution Approach 2:
The system uses the blank measurement data to self-correct for crucible-derived gas interference during sample analysis. By applying the predetermined zero-point correction amount, the system automatically compensates for the crucible's contribution without requiring additional stabilization time or manual intervention, thus improving productivity.
3Loss of time
If measurement is performed during transient state when gas generation fluctuates, then analysis time is shortened, but measurement precision deteriorates
Solution Approach 1:
The patent performs blank measurement during the transient state to establish the zero-point correction amount before sample analysis. By pre-determining the correction value from blank measurement data, the system can immediately begin sample analysis without waiting for stabilization, while still achieving accurate results through the applied correction.
Solution Approach 2:
The system uses feedback from blank measurement to correct sample measurements. The zero-point correction amount determined from blank measurement serves as a feedback parameter that compensates for crucible-derived gas interference during actual analysis, allowing accurate measurements to be taken during the transient state without waiting for stabilization.
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
Significantly reduces analysis time while maintaining accuracy by setting zero-point correction based on measurement values in a transient state region, reducing variations and electrical noise influence.
Implementation Method 1
hold a graphite crucible containing a sample with a pair of electrodes in a heating furnace to heat the crucible and the sample by applying an electric current directly to the crucible
Implementation Method 2
heating generates a sample gas that is led out from the heating furnace
Implementation Method 3
combustion characteristics of the sample
Data Source
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AI summary
Provided is an element analysis method that is capable of maintaining accuracy of zero-point correction equivalent to that in the related art while shortening the time required for element analysis, and that includes heating a sample placed in a crucible in a heating furnace, and measuring an amount of an element contained in a gas discharged from the heating furnace by an analysis mechanism to analyze the element contained in the sample, the method including: a blank measurement step of measuring the amount of the element contained in the gas discharged from the heating furnace when only the crucible is heated; and a step of setting an amount of zero-point correction based on a measurement value in a transient state region where the measurement value rises in blank data obtained in the blank measurement step.