The following methods can usually be used to detect the purity of tungsten wire:
- Spectral analysis method
Spectral analysis is a commonly used method for detecting the purity of metallic tungsten. It uses the characteristic spectral lines emitted by different elements to accurately determine the content of tungsten. This method is fast and accurate and is widely used in scientific research and industrial production. Specific instruments include:
X-ray fluorescence spectrometer (XRF): It can be used to quickly and non-destructively detect the chemical analysis of components and materials to determine the purity of tungsten wire.
Energy dispersive X-ray spectrometer (EDX): It can also be used for quantitative analysis of chemical composition.
- Chemical analysis method
Chemical analysis is another commonly used method for detecting the purity of metallic tungsten. It performs chemical reactions on samples and uses the substances produced by chemical reactions for quantitative analysis to obtain the tungsten content. Although this method is relatively complex to operate, it has high accuracy and is suitable for occasions where high tungsten purity is required.
- Indirect determination method
For high-purity tungsten wire, indirect determination can also be used to detect its purity. This method is to determine the content of various impurities in high-purity substances by highly accurate and sensitive methods, and then subtract the percentage of the total amount of measured impurities from the substance to be tested to obtain the purity of the high-purity substance. Commonly used methods for determining impurities include ultraviolet-visible spectrophotometry, atomic absorption spectroscopy, atomic emission spectroscopy, electrochemical analysis, etc.
- Third-party testing
In order to ensure the objectivity and fairness of the test results, it is sometimes necessary to entrust independent third-party testing agencies or laboratories to conduct testing. These agencies will conduct tests and evaluations based on specific standards, specifications or requirements, and provide formal documents on the evaluation and test results.
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