Article ID Journal Published Year Pages File Type
7593162 Food Chemistry 2015 5 Pages PDF
Abstract
A novel space-resolved solid phase microextraction (SR-SPME) technique was developed to facilitate simultaneously analyte monitoring within heterogeneous samples. Graphene (G) and graphene oxide (GO) were coated separately to the segmented fibers which were successfully used for the solid-phase microextraction of two contaminants with dramatically different volatility: 2,4,6-trichloroanisole (TCA) and dibutyl phthalate (DBP). The space-resolved fiber showed good precision (5.4%, 6.8%), low detection limits (0.3 ng/L, 0.3 ng/L), and wide linearity (1.0-250.0 ng/L, 1.0-250.0 ng/L) under the optimized conditions for TCA and DBP, respectively. The method was applied to simultaneous analysis of the two contaminates with satisfactory recoveries, which were 96.96% and 98.20% for wine samples.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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