Abstract
The Potential of Phytoscreening for Plume Delineation at Contaminated Sites Has Promoted Interest in Innovative, Sensitive Contaminant Sampling Techniques. Solid-Phase Microextraction (SPME) Methods Have Been Developed, Offering Quick, Undemanding, Noninvasive Sampling Without the Use of Solvents. in This Study, Time-Weighted Average SPME (TWA-SPME) Sampling Was Evaluated for in Planta Quantification of Chlorinated Solvents. TWA-SPME Was Found to Have Increased Sensitivity over Headspace and Equilibrium SPME Sampling. using a Variety of Chlorinated Solvents and a Polydimethylsiloxane/carboxen (PDMS/CAR) SPME Fiber, Most Compounds Exhibited Near Linear or Linear Uptake over the Sampling Period. Smaller, Less Hydrophobic Compounds Exhibited More Nonlinearity Than Larger, More Hydrophobic Molecules. using a Specifically Designed in Planta Sampler, Field Sampling Was Conducted at a Site Contaminated with Chlorinated Solvents. Sampling with TWA-SPME Produced Instrument Responses Ranging from 5 to over 200 Times Higher Than Headspace Tree Core Sampling. This Work Demonstrates that TWA-SPME Can Be Used for in Planta Detection of a Broad Range of Chlorinated Solvents and Methods Can Likely Be Applied to Other Volatile and Semivolatile Organic Compounds. © 2012 American Chemical Society.
Recommended Citation
E. M. Sheehan et al., "Time-Weighted Average SPME Analysis for in Planta Determination of CVOCs," Environmental Science and Technology, vol. 46, no. 6, pp. 3319 - 3325, American Chemical Society, Mar 2012.
The definitive version is available at https://doi.org/10.1021/es2041898
Department(s)
Civil, Architectural and Environmental Engineering
International Standard Serial Number (ISSN)
1520-5851; 0013-936X
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 American Chemical Society, All rights reserved.
Publication Date
20 Mar 2012
PubMed ID
22332592
Comments
Seventh Framework Programme, Grant 213161