Determination of multi-class herbicides in soil by liquid-solid extraction coupled with headspace solid phase microextraction method
نویسندگان
چکیده
منابع مشابه
Determination of plastic monomers in water by solid-phase microextraction coupled with liquid chromatography.
A method is presented for the determination of 2 major plastic monomers, terephthalic acid and vinyl acetate, which are widely used to manufacture plastics that come in contact with foods. The analytes are extracted from aqueous solution by using solid-phase microextraction, followed by quantitation by liquid chromatography (LC) with UV detection. Multivariate optimization was applied and is de...
متن کاملSolid-phase microextraction and headspace solid-phase microextraction for the determination of polychlorinated biphenyls in water samples.
A solid-phase microextraction (SPME) method has been developed for the quantification of polychlorinated biphenyls (PCBs) in water samples. Parameters such as sampling time, volume of water, volume of headspace, temperature, addition of salts, and agitation of the sample were studied. Because the time for reaching equilibrium between phases takes several hours or days, depending on the experime...
متن کاملDetermination of Trichloroethylene in Water by Liquid–Liquid Microextraction Assisted Solid Phase Microextraction
A method for the determination of trichloroethylene (TCE) in water using portable gas chromatography/mass spectrometry (GC/MS) was developed. A novel sample preparation method, liquid–liquid microextraction assisted solid phase microextraction (LLME–SPME), is introduced. In this method, 20 μL of hexane was added to 10 mL of TCE contaminated aqueous samples to assist headspace SPME. The extracti...
متن کاملDetermination of Lactones in Wines by Headspace Solid-Phase Microextraction and Gas Chromatography Coupled with Mass Spectrometry
Application of headspace solid-phase microextraction (HS-SPME) coupled with high-resolution gas chromatographic (HRGC) analysis was studied for determining lactones in wines. Six different SPME fibers were tested, and the influence of different factors such as temperature and time of desorption, ionic strength, time of extraction, content of sugar, ethanol, tannins and anthocyanins, and pH and ...
متن کاملOptimization of the headspace solid-phase microextraction for determination of glycol ethers by orthogonal array designs.
A headspace solid-phase microextraction (HS-SPME), in conjunction with gas chromatography-flame ionization detection for use in the determination of six frequently used glycol ethers at the microg/l level is described. A 75 microm Carboxenpolydimethylsiloxane fiber was used to extract the analytes from an aqueous solution. Experimental HS-SPME parameters such as extraction temperature, extracti...
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ژورنال
عنوان ژورنال: Journal of the Serbian Chemical Society
سال: 2016
ISSN: 0352-5139,1820-7421
DOI: 10.2298/jsc151123044d