Journal ArticleDOI
Analysis of Substituted Benzene Compounds in Groundwater Using Solid-Phase Microextraction
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TLDR
In this paper, Solid Phase Microextraction (SPME) was applied to the analysis of benzene, toluene, ethyl benzene and xylenes in groundwater.Abstract:
rn Solid-phase microextraction (SPME) is applied to the analysis of benzene, toluene, ethyl benzene, and xylenes in groundwater. The inexpensive SPME method reduced the sample preparation time by 3-7-fold when compared to purge and trap methods. The relative standard deviation ranged from 3 to 5% for the single-operator relative standard deviation using a methyl silicone fiber. Limits of detection of 1-3 ppb (w/v) were obtained when using a fiber coated with 56-pm methyl silicone film and FID detection. The linear range extended from 15 to 3000 ppb (w/v). Solvents have been completely removed from the sample preparation step.read more
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Journal ArticleDOI
Headspace solid-phase microextraction
Zhouyao Zhang,Janusz Pawliszyn +1 more
TL;DR: In this article, a modification of the solid-phase microextraction method (SPME) is proposed to shortens the time of extraction and facilitates the application of this method to analysis of solid samples.
Journal ArticleDOI
Automation and optimization of solid-phase microextraction
TL;DR: The solid phase microextraction (SPME) technique as mentioned in this paper involves exposing a fused silica fiber that has been coated with a stationary phase to and aqueous solution containing organic contaminants.
Journal ArticleDOI
Solid-phase microextraction
TL;DR: Solid-phase microextraction (SPME) as mentioned in this paper is a sample preparation technique that minimizes the consumption of organic solvents and has been shown to be useful in analytical chemistry.
Journal ArticleDOI
Biomass Conversion in Water at 330−410 °C and 30−50 MPa. Identification of Key Compounds for Indicating Different Chemical Reaction Pathways
Andrea Kruse,A. Gawlik +1 more
TL;DR: In this article, the degradation of biomass was studied in the ranges of 330−410 °C and 30−50 MPa and at 15 min of reaction time, and the chemistry of biomass degradation, key compounds which are interme...
Journal ArticleDOI
Sol-gel coating technology for the preparation of solid-phase microextraction fibers of enhanced thermal stability.
TL;DR: Enhanced thermal stability allowed the use of higher injection port temperatures for efficient desorption of less-volatile analytes and should translate into extended range of analytes that can be handled by SPME-GC techniques.
References
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Journal ArticleDOI
Dynamics of organic compound extraction from water using liquid-coated fused silica fibers
TL;DR: In this paper, the absorption and desorption processes of benzene, toluene, and p-xylene were described and compared with experimental results for solid-phase microextraction using poly(dimethylsiloxane)-coated fused silica optical fibers.
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David W. Potter,Janusz Pawliszyn +1 more