[Development of a SIRI-TOFMS and the application research progress]

Area of Science:

• Analytical Chemistry
• Materials Science
• Physics

Context:

• Development of advanced analytical instrumentation is crucial for trace element detection.
• Microanalysis requires high-resolution imaging and precise sample manipulation.
• Sputter Initiated Resonance Ionization-Time of Flight Mass Spectrometry (SIRI-TOFMS) offers high sensitivity for elemental analysis.

Purpose:

• To design and develop a unique Sputter Initiated Resonance Ionization-Time of Flight Mass Spectrometer (SIRI-TOFMS) in China.
• To enhance the microanalysis capabilities of the SIRI-TOFMS system.
• To demonstrate the system's efficacy in trace element analysis.

Summary:

• A novel Sputter Initiated Resonance Ionization-Time of Flight Mass Spectrometer (SIRI-TOFMS) was engineered in China.
• Key enhancements include a liquid gallium ion source, sub-micron sample manipulator, and advanced imaging systems.
• The apparatus achieved trace analysis of gold in minerals (40ng/L detection limit) and copper in steel (microg/g detection limit).

Impact:

• Establishes the first SIRI-TOFMS in China, advancing microanalysis capabilities.
• Demonstrates high sensitivity and precision for trace element quantification in complex matrices.
• Provides a foundation for further research in elemental analysis and materials characterization.