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Large Volume Injection of Polycyclic Aromatic Hydrocarbons
Poster Title: Large Volume Injection of Polycyclic Aromatic Hydrocarbons
Submitted on 03 Mar 2014
Author(s): Anne Jurek
Affiliations: EST Analytical
This poster was presented at Pittcon 2014
Poster Views: 1,419
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Poster Information
Abstract: Polycyclic Aromatic Hydrocarbons (PAHs) are formed from incomplete burning of carbon containing fuel. There are thousands of PAH compounds in the environment, and of those; there are several that have been established to be of concern for the environment. Extraction of PAH compounds involves a large amount of sample and solvent, and because of this, there is a lot of solvent waste. The use of Large Volume Injection (LVI) in conjunction with a Programmable Temperature Vaporizer (PTV) aids in eliminating some of this solvent waste, and reduces labor and shipping costs due to the ability to extract smaller volumes of sample without sacrificing sensitivity. This analysis will compare PAH compound response of a standard injection versus a large volume injection.Summary: The most common practice for extraction of PAH compounds from a water matrix involves one liter of sample and more than 150mls of solvent. USEPA Method 3511 proposes a micro-extraction technique that uses less than 5mls of sample and approximately 2mls of solvent. However, micro-extraction is not nearly as sensitive when analyzing for PAH compounds. In answer to this problem, laboratories can utilize Large Volume Injection in conjunction with a Programmable Temperature Vaporizer. References: 1. Semivolatile Organic Compounds by Gas Chromatography/Mass Spectrometry (GC/MS); United States Environmental Protection Agency Method 8270D, Revision 4, February 2007.

2. Organic Compounds in Water by Microextraction; United States Environmental Protection Agency Method 3511, Revision 0, November 2002.
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