NDLI: Cooling-Assisted Headspace Hollow Fiber-Based Liquid-Phase Microextraction Setup for Direct Determination of PAHs in Solid Samples by Using Volatile Solvents

Content Provider	Springer Nature Link
Author	Ghiasvand, Ali Reza Heidari, Nahid
Copyright Year	2016
Abstract	To reinforce the extraction efficiency of the liquid- and solid-phase microextraction methods, different cooling-assisted setups have been employed, most of which are complicated, expensive, tedious, and do not show good performances due to indirect transfer of cold to the extraction phase. In this research, a simple, low-cost and effective cooling-assisted headspace hollow fiber-based liquid-phase microextraction (CA-HS-HF-LPME) device was fabricated and evaluated, which is able to directly cool down the extraction phase in different modes of LPME. It was coupled to GC-FID and utilized for the direct determination of PAHs in contaminated soil samples using volatile organic solvents. Different effective experimental variables including type and volume of extraction solvent, extraction time and temperature, and temperature of the cooled organic solvent were evaluated and optimized. Under the optimized experimental conditions (e.g., organic extracting solvent: 3 µL of acetone; extraction time: 20 min; extraction temperature: 90 °C; and temperature of cooled organic drop: −25 °C), good linearity of calibration curves (R 2 > 0.99) was obtained in a concentration range of 1–10,000 ng g−1. The limits of detection (LODs) were obtained over the range of 0.01–0.1 ng g−1. The relative standard deviations (RSD%, n = 6) of 0.1 µg g−1 PAHs were found to be 4.7–10.1 %. The CA-HS-HF-LPME-GC-FID method was successfully used for the direct determination of PAHs in contaminated soil and plant samples, with no sample manipulation. The results were in agreement with those obtained by a validated ultrasound-assisted solvent extraction (UA-SE) method.
Starting Page	1187
Ending Page	1195
Page Count	9
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	79
Issue Number	17-18
e-ISSN	16121112
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-07-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cooling-assisted microextraction Headspace hollow fiber-based liquid-phase microextraction Volatile organic solvent PAHs Contaminated soils Chromatography Proteomics Pharmacy Laboratory Medicine
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry

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