AN322: Selective Extraction of PCBs from Fish Tissue Using Accelerated Solvent Extraction

Instrument Type: Automated Sample Prep

The analysis of extracts containing polychlorinated biphenyl (PCB) contaminants from fish tissue and fish homogenates can be hindered by the presence of coextracted fatty materials. Here demonstrates that selective extractions can be performed using accelerated solvent extraction with the proper choice of solvent and sorbent in the extraction cell. Results are given for the recovery of PCBs from contaminated fish tissue showing that extracts do not require further cleanup prior to analysis by gas chromatography when using accelerated solvent extraction.

Analysis of total organic carbon (TOC) by GC-MS

Instrument Type: GCMS

In this work the suitability and selective performance of the Thermo Scientific TraceGOLD TG-5SilMS for the analysis of total organic carbon was demonstrated. TOC can be used as a useful measure of the broad estimation or residual pesticides and other carbonaceous material. It is especially useful when coupled to mass selective detection as it allows identification and quantification of specific contaminating materials. Note the retention times in the component table match the component number and are not the actual retention time.

Detection of Organochlorine Pesticides by GC-ECD Following U.S. EPA Method 8081

Instrument Type: GC

The application describes a convenient method for analyzing and quantifying organochlorinated pesticides in extracts from solid and liquid matrices using a gas chromatograph (GC) equipped with an electron capture detector (ECD), according to the US regulation EPA 8081. The ECD detector has been demonstrated to be a sensitive, cheaper, and easier-to operate alternative to mass spectrometry, showing an excellent selectivity toward organohalogenated compounds.