Device built-in

Agilent 6890N-5975B Gas Chromatograph/Mass Spectrometer (GC/MS) Introduction

System Overview

The Agilent 6890N-5975B Gas Chromatograph/Mass Spectrometer (GC/MS) is a high-performance analytical instrument developed by Agilent Technologies, combining the 6890N gas chromatograph with the 5975B inert XL EI/CI MSD mass spectrometer detector. The system features inert ion source technology capable of reaching temperatures up to 300°C, effectively reducing sample adsorption at active sites, making it particularly suitable for trace analysis and detection of thermally unstable compounds.

Core Technical Specifications

This system delivers exceptional performance metrics:

• Mass range: 1.6-1050 amu with mass accuracy of 0.1 amu and mass axis stability of 0.1 amu/48 hours
• Sensitivity: Signal-to-noise ratio ≥20:1 for 1pg octafluoronaphthalene at m/z 272.0 in EI mode; up to 500:1 in NCI mode
• Dynamic range: 10⁷ (10%), meeting requirements for samples with wide concentration ranges
• Data acquisition rate: Up to 200Hz, capable of detecting chromatographic peaks with peak widths as narrow as 25ms

System Features

1. Injection system: Equipped with split/splitless inlet (0-150 psi) and programmable temperature vaporization inlet, supporting large-volume injection to reduce sample preparation steps
2. Ion source: Features molybdenum alloy inert EI source to eliminate active adsorption sites; optional PCI and NCI chemical ionization sources expand application scope
3. Quadrupole technology: True hyperbolic quartz gold-coated quadrupoles with independent temperature control ensure high mass accuracy and stability
4. Retention Time Locking (RTL): Technology guarantees retention time reproducibility of 0.0008 minutes during method transfer

Application Fields

The system finds extensive applications in:

• Food safety: Analysis of pesticide residues, veterinary drug residues, and food additives
• Environmental monitoring: Detection of persistent organic pollutants (POPs) and volatile organic compounds (VOCs)
• Pharmaceutical research: Study of drug metabolites and impurity analysis
• Petrochemical industry: Hydrocarbon composition analysis

Operation and Maintenance

The system includes ChemStation workstation software supporting automated method and sequence editing. Routine maintenance requires periodic replacement of liners and septa, ion source cleaning, and mechanical pump oil level checks. The instrument is ISO-certified and complies with international standard methods such as EPA and ASTM requirements.