###GC-MS Principle
GC-MS separates vaporized samples in a chromatographic column, and the separated compounds are detected by a mass spectrometer (MS).
Instrument Model and Technical Parameters
- Model: Agilent 7890B/5977A
- Technical Parameters:
- Mass range: (2–1023) amu
- Resolution: m/z = 0.1
Sample Requirements and Notes
- Sample form: Solid or liquid (20–100 mg in a plastic centrifuge tube).
- Solubility: Samples must be fully soluble in common volatile solvents (methanol, ethanol, acetone, etc.).
- Stability: Samples should be volatile and non-thermally decomposable.
Test Examples
Reference Standards
- ISO/TS 16780:2015: Water Quality - Determination of Polychlorinated Naphthalenes (PCN) - Gas Chromatography (GC) and Mass Spectrometry (MS)
- ISO 23646:2022: Soil Quality - Determination of Organochlorine Pesticides Using Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography-Electron Capture Detection (GC-ECD)
