GC

What Is Gas Chromatography?

Gas Chromatography separates chemical compounds based on their volatility and interaction with a stationary phase inside a chromatography column. As compounds elute at different retention times, they are detected and recorded as a chromatogram.

GC is especially effective for analyzing low-molecular-weight organic compounds that cannot be easily identified by solid-state techniques.

What GC Measures

GC can be used to detect and quantify:

Volatile Organic Compounds (VOCs)
Residual solvents
Plasticizers and low-molecular additives
Processing aids and contaminants
Degradation products and by-products
Unknown volatile impurities

When combined with appropriate detectors or sample preparation methods, GC provides high sensitivity and excellent separation.

Why Use GC?

GC is chosen when volatile or semi-volatile components are suspected to play a role in performance or failure. It helps answer questions such as:

Are residual solvents present above acceptable levels?
What is causing unexpected odor or outgassing?
Are volatile impurities introduced during processing?
Do different batches or suppliers contain different volatile profiles?
Has degradation produced new volatile compounds?

Typical Application Scenarios

Impurity & Contamination Analysis

Identification of unexpected volatile contaminants
Investigation of odor-related complaints
Cleanliness and outgassing evaluation

Polymers, Plastics & Rubber

Residual monomer or solvent analysis
Additive and plasticizer screening
Comparison of formulations or suppliers

Pharmaceuticals & Medical Products

Residual solvent testing
Volatile impurity profiling
Stability and degradation studies

Failure Analysis & Troubleshooting

Investigation of discoloration, odor, or material degradation
Comparison of “good vs. failed” samples
Root-cause analysis involving volatile species

Quality Control & Supplier Qualification

Batch consistency verification
Incoming material screening
Process change validation

Sample Types

GC can be applied to:

solids (with appropriate extraction or headspace sampling)
liquids and solutions
polymers, resins, and coatings
adhesives, sealants, and consumer products

Sample preparation methods may include headspace analysis, solvent extraction, or thermal desorption, depending on the analytical objective.

What You Will Receive

Each GC project is delivered with a clear, structured report designed for engineering and quality decisions. A typical deliverable includes:

test objective and sample description
sample preparation and GC conditions
chromatograms with identified peaks
qualitative and/or quantitative results
comparison summaries (batch vs. batch, supplier vs. supplier)
interpretation of volatile components and their potential impact
recommendations for follow-up testing or corrective action

Why Choose Xinbodi for GC Analysis?

Experience with complex material matrices
Flexible sample preparation strategies tailored to your application
High sensitivity for trace-level volatile compounds
Clear interpretation linked to real-world performance
Support for R&D, QC, and failure investigations
Confidential handling of proprietary samples and data

GC