Title

Developing Methods to Measure Concentration Profiles in Solid Materials Using Solid Phase Micro Extraction (SPME)

Presenter Information

Jonathan McKinney

Department

Civil, Architectural and Environmental Engineering

Major

Environmental Engineering

Research Advisor

Morrison, Glenn

Advisor's Department

Civil, Architectural and Environmental Engineering

Funding Source

EPA GRO Fellowship

Abstract

Volatile organic compounds (VOCs) in indoor air have been correlated with numerous health problems by epidemiologists and toxicologists. However many of these health problems have not been linked to any particular pollutant since current methods for collecting exposure data are very limited. It is our goal to derive methods which provide health scientists with the historic exposure data needed for their studies by taking advantage of unique concentration profiles due to diffusion of air pollutants into and out of building materials. To date we have developed methods to measure chemicals activities in polyurethane foam (PUF; used in furniture cushions) using solid phase micro-extraction (SPME), measure the diffusion coefficient of toluene in PUF, create concentration profiles under conditions similar to indoor environments, and model the measured concentration profiles. For the PUF material tested, the toluene diffusion coefficient at room temperature was 0.00078 cm22/s (± 0.00035). Uncertainty associated with measuring concentration profiles using SPME has also been quantified (± 2.1%).

Biography

Jonathan McKinney is a junior in Environmental Engineering. He is pursuing a research project under the supervision of Dr. Glenn C. Morrison and plans to continue working on the project after his OURE fellowship. He has also received an EPA GRO fellowship for his research efforts. Jonathan has been interested in working in a lab for a long time, and really enjoys having the opportunity to do so now. When finished with his undergraduate degree, he plans to go on and get a masters degree.

Research Category

Engineering

Presentation Type

Poster Presentation

Document Type

Poster

Award

Engineering poster session, Second place

Location

Upper Atrium/Hallway

Presentation Date

08 Apr 2009, 1:00 pm - 3:00 pm

This document is currently not available here.

Share

COinS
 
Apr 8th, 1:00 PM Apr 8th, 3:00 PM

Developing Methods to Measure Concentration Profiles in Solid Materials Using Solid Phase Micro Extraction (SPME)

Upper Atrium/Hallway

Volatile organic compounds (VOCs) in indoor air have been correlated with numerous health problems by epidemiologists and toxicologists. However many of these health problems have not been linked to any particular pollutant since current methods for collecting exposure data are very limited. It is our goal to derive methods which provide health scientists with the historic exposure data needed for their studies by taking advantage of unique concentration profiles due to diffusion of air pollutants into and out of building materials. To date we have developed methods to measure chemicals activities in polyurethane foam (PUF; used in furniture cushions) using solid phase micro-extraction (SPME), measure the diffusion coefficient of toluene in PUF, create concentration profiles under conditions similar to indoor environments, and model the measured concentration profiles. For the PUF material tested, the toluene diffusion coefficient at room temperature was 0.00078 cm22/s (± 0.00035). Uncertainty associated with measuring concentration profiles using SPME has also been quantified (± 2.1%).