Journal ArticleDOI
On-line combination of automated micro liquid-liquid extraction and capillary gas chromatography for the determination of pesticides in water
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In this article, micro liquid-liquid extraction with methyl tert-butyl ether was combined with GC-FPD in a fully automated set-up, using GC sample introduction volumes of 500 μl, which were transferred via an oncolumn interface equipped with an early vapour exit.About:
This article is published in Journal of Chromatography A.The article was published on 1993-08-06. It has received 40 citations till now. The article focuses on the topics: Detection limit.read more
Citations
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Stir bar sorptive extraction for trace analysis
Frank David,Pat Sandra +1 more
TL;DR: The principles of stir bar sorptive extraction are described and an overview of SBSE applications is given, as illustrated by several successful applications in trace analysis in environmental, food and biomedical fields.
Journal ArticleDOI
Trace analysis of pesticides by gas chromatography
TL;DR: The role of gas chromatography as an analytical tool in combination with currently used or recently developed sample preparation techniques is described.
Journal ArticleDOI
Novel stir bar sorptive extraction methods for environmental and biomedical analysis
TL;DR: These methods were applied successfully to the trace analysis of environmental and biological samples and extremely low detection limits were achieved.
Journal ArticleDOI
Sampling volatile compounds from natural products with headspace/solid-phase micro-extraction.
TL;DR: Recent advances in the development of analytical methods based on headspace/solid-phase micro-extraction (HS/SPME) of natural aroma compounds are reviewed, with special emphasis on increasing reproducibility.
Journal ArticleDOI
Preparation of stir bars for sorptive extraction based on monolithic material
Xiaojia Huang,Dongxing Yuan +1 more
TL;DR: The SBSEM shows good batch-to-batch reproducibility and good stability, and can be reused a least 10 times for the extraction of polycyclic aromatic hydrocarbons in seawater, and shows good permeability resulting in fast adsorption and desorption for detected solutes.
References
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Journal ArticleDOI
Liquid chromatographic trace enrichment with on‐line capillary gas chromatography for the determination of organic pollutants in aqueous samples
TL;DR: Trace enrichment for the GC analysis of a series of chlorinated pesticides and polychlorinated biphenyls (PCBs) in aqueous samples has been achieved through a simple on-line technique involving sorption on an LC micro-precolumn followed by direct elution into a gas chromatograph with hexane as mentioned in this paper.
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Early solvent vapor exit in GC for coupled LC‐GC involving concurrent eluent evaporation
TL;DR: In this paper, the authors use early solvent vapor exits for concurrent eluent evaporation with the loop-type interface to protect the GC detectors from large amounts of solvent vapors.
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On-line liquid-liquid extraction in a segmented flow directly coupled to on-column injection into a gas chromatograph
TL;DR: In this paper, a mechanized system for extractive sample workup for gas chromatography coupled on-line to an on-column injector is described, which is performed in a liquid-liquid segmented flow in a glass coil internally coated with a hydrophobic layer.
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Automated monitoring of organic trace components in water : I. Continuous flow extraction together with on-line capillary gas chromatography
TL;DR: In this article, a system for automated monitoring of volatile organic trace compounds in water is described, where water is continuously extracted in a fused-silica capillary tube after flow injection of an immiscible solvent.
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Direct gas chromatographic analysis of aqueous samples at the part-per-billion and part-per-trillion levels
TL;DR: In this paper, an injecteur "on column" is used to introduce an echantillon aqueux (jusqu'a 400 μl) on a colonne capillaire a phase hydrophobe greffee.