GCxGC-ECD Comprehensive Two-Dimensional Gas Chromatography with Electron Capture Detector



Increase efficiency and productivity of testing environmental and pesticide samples that need highly efficient chromatographic separation by using LECO GCxGC technology.  In environmental samples it is not unusual to find OCPs with PCBs, which normally complicates the determination of both species.  The selectivity of the LECO GCxGC-µECD technique omits this concern and offers operators a powerful system when combined with advanced ChromaTOF® software.

Reduce the chances of coeluting OCP and PCB interferences by using LECO GCxGC-µECD to increase peak capacity by applying two independent separations to a sample in one analysis with one detector.  At the same time, the LECO GCxGC-µECD technique reduces operational costs by removing the need for multiple sample injections to attain the same or even better output.

Benefits of LECO GCxGC-µECD:

  • Vastly increase selectivity and sensitivity enhancement afforded by ECD when combined with the power of cyro focusing effect of LECO GCxGC technology
  • Transfer organochlorine pesticide methods developed on your Pegasus 4D GCxGC-TOFMS to a cost-effective GCxGC system for routine analysis.
  • Accurately and selectively quantify Polychlorinated Biphenyl Congeners and Dioxin-Like Polychlorinated Biphenyls using LECO GCxGC-µECD
  • Enhanced separating power for complex sample analysis
  • Easy-to-use ChromaTOF®-based software provides acquisition processing and reporting functionality within a single package
  • Classification software feature simplifies component identification
  • Greatly increase peak detectability with instant increased peak capacity using GCxGC dual stage thermal modulation technology.
  • Increase in signal-to-noise up to an order-of-magnitude using segmented cryo-focused peaks
  • Gain the ability to separate your peaks of interest AND lower the limit of detection (LOD) of your chromatographic system to levels unachievable in traditional GC methods.
  • Electron Capture Detector (ECD), or Sulphur Chemiluminescence Detector (SCD) models are also available


LECO's pioneering efforts in GCxGC data processing have resulted in the most comprehensive software package available.  Offering the industry's most advanced data-mining algorithms, ChromaTOF combines ease-of-use with advanced chromatographic techniques and three dimensional chromatogram visualization to deliver a seamless data analysis package well suited for both routine and research-level use.  Even the most demanding analytical samples will be easily characterised, resulting in increased component identification and laboratory productivity.
  • User-defined classifications–peak grouping based on proximity in the chromatographic plane
  • Bubble plots–peak intensity represented by circle radius
  • Custom generated reports
  • Built-in spreadsheets for advanced data-mining
  • Data exporting for secondary software analysis
  • Advanced Automated Peak Find algorithm
  • Contour and surface plot 3D chromatogram visualization
LECO's GCxGC Thermal Modulator, Liquid N2 consumable-free model is also available, is the key to the enhancement of peak detectability.  The LECO patented modulator, located between the two columns, consists of a robust dual-stage, quad-jet system that creates two distinct cooled trapping zones.  This unique design ensures all of the effluent from the first column is properly focused prior to thermal release into the second column.  A secondary oven is used for optimisation of the second dimension separation. GCxGC separation occurs by the repeated re-injection of effluent from the 1st GC column into a 2nd GC column of orthogonal phase.  With our LECO GCxGC system this is accomplished with a dual-stage, quad-jet thermal modulator positioned between the two columns. Inside of the GC oven, showing GCxGC components and connections: (A) GC inlet, (B) Primary GC column, (C) Press fit connection between primary and secondary GC columns, (D) Quad-jet modulator, (E) Secondary oven, (F) Transfer line, (G) Detector.


LECO’s versatile instrumentation can be used to perform a wide range of applications. Please find below a selection of application notes for the most popular applications. Contact our sales and application specialists for more details.

PCBs and Dioxins screening

Quantification of Dioxin-Like Polychlorinated Biphenyls Using GCxGC-ECD with a Selective Column in the Second DimensionLearn more...

Organochlorine Pesticides in Food

GCxGC-ECD of Organochlorine Pesticides in Cucumber and TomatoLearn more...

Polychlorinated Biphenyl Congeners, Environmental, PCBs, Enhanced Chromatography

Separation of Polychlorinated Biphenyl Congeners 105, 132, and 153 Using GCxGC-ECD with a Selective Column in the Second DimensionLearn more...

Polybrominated Diphenyl Ethers

GCxGC-ECD of Polybrominated Diphenyl EthersLearn more...

Organochlorine Pesticides

Organochlorine Pesticides by GCxGC-ECDLearn more...


Separation and Identification of PCB's and PBDE's by GCxGC-ECDLearn more...

Chlorinated Pesticides, ECD

Analysis of Chlorinated Pesticides by GCxGC-μECDLearn more...

Calibration Curve Linearity, DDT, ECD

Calibration Curve Linearity for DDT Using GCxGC-ECDLearn more...

Options & models


Various options are available for this product. Contact our sales and application specialists to select the right configuration for your application.
GCxGC with Consumable-Free Modulator
Optional inlets available (including S/SL, PTV, and MMI)
Optional Detectors available (including SCD, NPD and FID) 


Each instrument can be configured to meet your individual lab needs. Contact our sales and application specialists to select the right configuration for your application.
GCxGC with LN2 Cooled Thermal Modulator 
GCxGC with Consumable-Free Modulator