GB/T 36590-2018 in English

GB/T 36590—2018 Standard Interpretation

GB/T 36590—2018 "High-purity silver chemical analysis method - determination of trace impurity elements - glow discharge mass spectrometry" is an important standard for the determination of trace impurity elements in high-purity silver, applicable to scientific research and industrial production. This standard adopts advanced glow discharge mass spectrometry (GDMS), combined with precise mass calibration and relative sensitivity factor calculation to ensure the accuracy and reliability of the analysis results.

Comparison of Standard Frameworks

Instrument and reagent requirements

Analysis steps and result calculation

Analysis steps include sample pretreatment, relative sensitivity factor determination and formal determination:

1. Sample pretreatment: The sample needs to be etched with nitric acid and cleaned.
2. Relative sensitivity factor determination: Calibrate with mass calibration reference sample.
3. Formal determination: Adjust sputtering parameters, continuously collect three measurement data, and calculate their average value as the result.

Analysis result calculation formula:

 \omega_X = \frac{RSF\left(\frac{X}{Ag}\right) \cdot I_X \cdot A_{Ag}}{I_{Ag} \cdot A_X} \cdot \pi_{Ag} 

Implementation suggestions

To ensure the effective implementation of the standard, it is recommended that:

• Equip professional personnel for operation and maintenance
• Regularly calibrate the instrument to ensure accuracy
• Establish a quality control system to ensure data reliability
• Refer to Table 2 for relative deviation requirements and control the analysis error range