GC-ECD is a specialized gas chromatography technique that uses an electron capture detector to identify compounds with high electronegativity, particularly halogens. The detector employs a radioactive source to ionize the carrier gas, and when electronegative compounds pass through, they capture electrons—resulting in a measurable drop in current. This makes GC-ECD exceptionally sensitive to substances like chlorinated pesticides, PCBs, and other persistent organic pollutants.

GC-FID is a gas chromatography method that uses a flame to ionize organic compounds as they exit the chromatographic column. These ions are then detected and quantified, providing precise measurements of compound concentrations. GC-FID is especially effective for analyzing non-polar organic compounds such as solvents, fuels, and industrial emissions.

RJ Lee Group brings decades of experience in environmental testing and industrial forensics. Our GC-ECD services are backed by:

• ISO-accredited laboratories and legally defensible methodologies.
  
  
• Expertise in trace-level detection across diverse sample types.
  
  
• Integrated analytical platforms for multi-technique investigations.
  
  
• Mobile laboratory capabilities for near-real-time field analysis.
  
  
• Customized method development to meet unique client needs.
  
  

We don’t just deliver data—we deliver insight. Our scientists work closely with clients to interpret results in context, helping you make informed decisions with confidence.