Organic Compound Analysis

Most of the organic analyses that we conduct are for organic priority pollutants such as pesticides, PCBs, PHCs, BTEX, and other petroleum products. Gas Chromatography (GC) is the standard methodology. From sample matrices such as soil, water, plants and fish, the analyte's are extracted into organic solvents, separated from interfering substances (cleaned up), concentrated and run on the GCs.

Agilent GC

Using a variety of different detectors, excellent sensitivity and specificity can be achieved for a whole spectrum of compounds. The use of automated sample carousels means that the GCs can be left unattended for overnight operation.


Automated sample analysis on Agilent GC


Sample Preparation For GC Analysis

There are many 'method specific' procedures we use to prepare our organic samples for GC analysis. Two of our primary solvent extraction methods utilize accelerated solvent extraction (ASE) or soxhlet extraction techniques.

ASE Extraction.jpg

Dionex ASE200 Solvent Extractor

Soxhlet Extraction

This glass apparatus was invented in 1879 and is still in use today. It uses the principle of 'continuous extraction' to repeatedly cycle solvent through a 'thimble' containing a material to be extracted.

See Wikipedia: Soxhlet Apparatus

Soxhlett Extractionjpg

Plant sample extraction by soxhlet



The Electron Capture Detector (ECD)

An ECD Detector

From Agilent eInspirations newsletter 2010


The Flame Ionisation Detector (FID)

FID Detector


The Thermal Conductivity Detector (TCD)

Thermal Conductivity Detector

See LibreTexts: Chemistry for complete descriptions of these detectors.



Typical PCB Chromatogram

PCB Chromatogram.JPG

Reproduced from "β-cyclodextrin enhanced phytoremediation of aged PCBs-contaminated soil from e-waste recycling area"
Yingxu Chen* a, Xianjin Tanga, Sardar Alam Cheemaa, Wenli Liub and Chaofeng Shena