HR-GDMS

High-resolution glow discharge mass spectrometer (GD-MS) for simultaneous detection of matrix and trace elements. Features dual focusing for isotopic and elemental analysis, customizable resolution, and a cryogenically cooled system.

• Status: Active
• Country: China
• Isotopic: Yes
• Elemental: Yes
• Type of measurable elements: Metals and non-metals
• Measurable isotopes/elements: Matrix and trace elements across a wide concentration range from ppb to 100%
• Analyzer type : Magnetic Sector MS
• Ion source type: Glow discharge
• Inlet types: Supports disc- and rod-shaped samples
• Mass range : 2-250 amu
• High Resolution : Yes
• Mass resolution/ Mass resolving power : RP 450-10000
• Sensitivity : capable of detecting concentrations as low as 10−10%
• Dynamic range : 12 orders of magnitude
• Detection limits : Sub-ppt levels for trace elements
• Precision : Matrix elements: <2%; Trace elements: <5%
• Signal stability, relative standard deviation : ±3% over 10 minutes; ±5% over 30 minutes for 63Cu
• Detector type : Faraday cup and SEM
• Geometry type : Double-focusing magnetic sector with electrostatic and magnetic sectors
• Focusing type : Dual focusing with variable dispersion
• Magnetic sector radius/ angle : 250 mm radius; 90° deflection
• Electric sector radius/ angle : 320 mm radius
• Cooling system : Liquid nitrogen cooling for discharge chamber and sample holder; water chiller for turbo pumps
• Vacuum system : Three-zone system: sample chamber, discharge area, and analyzer; Turbo molecular pumps supported by ion-getter pumps
• Gas supply: Argon (99.999%)