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Trends in Microextraction Techniques for Sample Preparation

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ISBN: 9783038427056 9783038427063 Year: Pages: 246 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2018-01-24 14:09:38
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Micro-extraction techniques in sample preparation are gaining interest among analytical chemists as they comply with green analytical chemistry demands and ensure environmental protection and public safety. Savings in cost and time are considered as valuable benefits by using novel micro-extraction approaches in sample handling. Selectivity, sensitivity and lower detection limits are also included among the performance characteristics required to meet the legislation criteria.The target of this special issue is to present the state of art in microextraction sample preparation techniques. Modern, simple and efficient methods for preconcentration and separation are described for different analytes isolated from various matrices.

Trends in Microextraction Techniques for Sample Preparation

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ISBN: 97830384270569783038427063 Year: Pages: 246 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2018-01-31 12:42:43
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Solid-Phase Microextraction

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ISBN: 9783039282623 9783039282630 Year: Pages: 266 DOI: 10.3390/books978-3-03928-263-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Analytical Chemistry
Added to DOAB on : 2020-04-07 23:07:08
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This book covers the most recent research activities and achievements regarding to the solid phase microextraction (SPME) technique. It is a powerful sample preparation tool that addresses the new challenges of analytical laboratories. Among others, its fundamental applications involved the sampling of volatile compounds from various matrixes. The demonstrated topics ranged from aroma characterization of various fruits, essential oils to the utilization of SPME for in-tube extraction and isolation of selected compounds from complex samples followed by state-of-the-art analytical techniques.

Keywords

mango germplasm --- volatile compound --- HS-SPME-GC-MS --- multivariate analysis --- cubeb berry --- principal component analysis (PCA) --- solid-phase microextraction (SPME) --- hydro-distillation (HD) --- simultaneous distillation/extraction (SDE) --- gas chromatography-mass spectrometry-olfactometry (GC-MS-O) --- SPME --- OH-PAHs --- gas-chromatography --- MTBSTFA --- in-tube solid-phase microextraction (IT-SPME) --- nanoliquid chromatography (nanoLC) --- contact trace analysis --- cannabis --- THC --- solid-phase microextraction --- air sampling --- air analysis --- volatile organic compounds --- COMSOL --- time-weighted average --- terpenes --- terpenoids --- headspace solid phase microextraction --- glandular source --- Monomorium chinense --- DI-SPME --- GC-MS --- Mediterranean fruit fly --- extraction solvent --- metabolites --- leave-one-solute-out (LOSO) cross-validation --- leave-one-out (LOO) cross-validation --- linear free-energy relationship (LFER) model --- membrane-coated fiber (MCF) approach --- partition coefficient --- quantitative structure-activity relationship (QSAR) --- metalworking fluid --- volatile organic compounds --- torrefaction --- waste to carbon --- biochar --- municipal solid waste --- SPME --- aromatic water --- hydrolat --- volatile compounds --- metabolic fingerprint --- eucalyptol --- SPME --- retracted SPME --- TWA SPME --- GC–MS --- on-site sampling --- air quality --- air monitoring --- VOCs --- odor --- environmental analysis --- biogenic emissions --- veraison --- viticulture --- nondestructive analysis --- wine aroma --- diffusion --- grape skin --- vacuum-assisted extraction --- solid-phase microextraction --- VOCs --- historical foods --- preserves --- volatile organic compounds (VOCs) --- bisphenol-A (BPA) --- essential oil --- drying --- SPME --- true lavender --- volatile constituents --- in-tube SPME-MS/MS --- dual ligand organic-silica hybrid monolith capillary --- amino acids --- plasma samples --- pears --- HS-SPME --- volatile compounds --- GC

Innovative Extraction Techniques and Hyphenated Instrument Configuration for Complex Matrices Analysis

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ISBN: 9783039210848 9783039210855 Year: Pages: 308 DOI: 10.3390/books978-3-03921-085-5 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- Chemical Engineering
Added to DOAB on : 2019-06-26 08:44:06
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The present Special Issue, “Innovative Extraction Techniques and Hyphenated Instrument Configuration for Complex Matrices Analysis”, aims to collect and to disseminate some of the most significant and recent contributions in the interdisciplinary area of innovative extraction procedures from complex matrices followed by validated analytical methods using hyphenated instrument configurations to support the optimization of the whole process and the scale-up possibility

Keywords

branched-chain keto acids --- serum --- muscle --- HPLC-Q-TOF/MS --- wood --- odor --- volatile organic compounds --- gas chromatography-olfactometry --- Wuyi Rock tea --- quality --- UPLC-QTOF MS --- UPLC-QqQ MS --- metabolite profiling --- metabolomics --- cluster analysis --- cultivars --- Lycium ruthenicun --- flavonoid --- ruthenicunoid A --- SIRT1 --- Asphodeline lutea --- HPLC-PDA --- heavy metals --- tyrosinase --- diabetes --- neurodegenerative disease --- color analysis --- pigments --- MAE --- HPLC-PDA --- SFE --- Thymus algeriensis --- rare earth elements --- flow injection --- inductively coupled plasma-mass spectrometry --- seawater --- Hericium erinaceuns mycelium --- high-speed counter-current chromatography (HSCCC) --- genistein --- daidzein --- Fe3O4 --- modification --- alginate --- alkaloid --- ultrasound assisted extraction --- gelatin --- actinidin --- bovine hide --- physicochemical properties --- gel strength --- Semen Cuscutae --- ultra-high-performance liquid chromatography coupled to electrospray ionization mass spectrometry --- chlorogenic acids --- flavonoids --- steamed Panax notoginseng --- saponins --- extraction --- optimization --- antioxidant activity --- response surface methodology --- hematopoiesis --- microwave processing --- response surface methodology --- minor ginsenosides --- blood-enriching activity --- hemostatic activity --- ionic liquids --- sample preparation --- microextraction --- solid-phase microextraction --- dispersive liquid-liquid microextraction --- single-drop microextraction --- stir bar sorptive extraction --- stir cake sorptive extraction --- rosuvastatin --- metformin --- HILIC --- LC-MS --- therapeutic drug monitoring --- oolong tea --- Tieguanyin tea cultivar --- metabolite profiling --- UPLC-QTOF MS --- metabolomics --- Ajuga genevensis --- near-infrared spectroscopy --- dry extract --- fluid bed process --- microNIR --- in-line monitoring --- total polyphenolic content --- antioxidant --- flavonoids --- mouse melanoma B16 cells --- Panax notoginseng --- surfactant --- n/a --- ultra-high-performance liquid chromatography tandem mass spectrometry --- GHB --- GHB glucuronide --- nails --- endogenous values --- walnut septum --- polyphenols --- phytosterols --- HPLC-MS/MS --- Ultra-Turrax extraction --- biological activity --- antioxidant activity --- experimental design --- optimization --- phytochemicals

Modern Sample Preparation Approaches for Separation Science

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ISBN: 9783039214112 9783039214129 Year: Pages: 282 DOI: 10.3390/books978-3-03921-412-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Analytical Chemistry
Added to DOAB on : 2019-12-09 11:49:15
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This book will provide the most recent knowledge and advances in Sample Preparation Techniques for Separation Science. Everyone working in a laboratory must be familiar with the basis of these technologies, and they often involve elaborate and time-consuming procedures that can take up to 80% of the total analysis time. Sample preparation is an essential step in most of the analytical methods for environmental and biomedical analysis, since the target analytes are often not detected in their in-situ forms, or the results are distorted by interfering species. In the past decade, modern sample preparation techniques have aimed to comply with green analytical chemistry principles, leading to simplification, miniaturization, easy manipulation of the analytical devices, low costs, strong reduction or absence of toxic organic solvents, as well as low sample volume requirements.Modern Sample Preparation Approaches for Separation Science also provides an invaluable reference tool for analytical chemists in the chemical, biological, pharmaceutical, environmental, and forensic sciences.

Keywords

vitamins --- extraction --- determination --- review --- sample preparation --- matrix solid phase dispersion --- sorbent --- miniaturization --- on-line --- blueberry --- non-anthocyanin polyphenol --- vortex-assisted dispersive liquid-liquid microextraction --- response surface methodology --- desirability function approach --- nail --- curie temperature --- high-frequency heating --- liquid chromatography–tandem mass spectrometry --- caffeine --- amlodipine --- gas chromatography --- hydrogel --- hormones --- pectin --- polyvinyl alcohol --- sample preparation --- in-tube SPME --- UHPLC-MS/MS --- organic-based monoliths --- antipsychotics --- plasma samples --- schizophrenic’ patients --- salting-out assisted liquid–liquid extraction --- sugaring-out assisted liquid–liquid extraction --- hydrophobic-solvent assisted liquid–liquid extraction --- subzero-temperature assisted liquid–liquid extraction --- phenolic compounds --- sorbent-based techniques --- multi-spheres adsorptive micro-extraction (MSA?E) --- floating sampling technology --- caffeine and acetaminophen tracers --- environmental water matrices --- vortex-assisted dispersive liquid-liquid microextraction --- China herbal tea --- pesticides residue --- aflatoxins --- UPLC-MS/MS --- vortex-synchronized matrix solid-phase dispersion --- crab shells --- ionic liquids --- anthraquinones --- Cassiae Semen --- sample preparation --- nanocomposite --- pathogenic --- enrichment --- nucleic acid isolation --- sample preparation with TLC/HPTLC --- solvent front position extraction --- solvent delivery with a moving pipette --- automation --- LC–MS/MS --- environmental analysis --- whole water --- trace analysis --- SPE --- large volume --- in-line filter --- sand --- flow rate --- pharmaceuticals --- hormones --- pesticides --- space instrumentation --- liquid chromatography --- oligopeptides --- trapping system --- membrane-based microextraction --- barbiturates --- simultaneous determination --- whole blood --- urine --- liver --- sample preparation --- oxylipins --- protein precipitation --- liquid–liquid extraction --- solid-phase extraction --- biological samples --- chlorophenoxy acid herbicides --- HPLC --- hydrophobic in-tube solid-phase microextraction --- poly (OMA-co-TRIM) monolithic column --- rice grains --- gold --- sample preparation --- preconcentration --- geological samples

Solid Phase Extraction: State of the Art and Future Perspectives

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ISBN: 9783039211586 9783039211593 Year: Pages: 176 DOI: 10.3390/books978-3-03921-159-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General)
Added to DOAB on : 2019-08-28 11:21:27
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This book is a collection of 13 innovative papers describing the state of the art and the future perspectives in solid-phase extraction covering several analytical fields prior to the use of gas or liquid chromatographic analysis. New sorptive materials are presented including carbon nanohorn suprastructures on paper support, melamine sponge functionalized with urea–formaldehyde co-oligomers, chiral metal–organic frameworks, UiO-66-based metal–organic frameworks, and fabric phase sorptive media for various applications. Solid-phase extraction can be applied in several formats aside from the conventional cartridges or mini-column approach, e.g., online solid-phase extraction, dispersive solid-phase microextraction, and in-syringe micro-solid-phase extraction can be very helpful for analyte pre-concentration and sample clean-up. Polycyclic musks in aqueous samples, 8-Nitroguanine in DNA by chemical derivatization antibacterial diterpenes from the roots of salvia prattii, perfluoroalkyl substances (PFASs) in aater samples by bamboo charcoal-based SPE, parabens in environmental water samples, benzotriazoles as environmental pollutants, organochlorine pesticide residues in various fruit juices and water samples and synthetic peptide purification are among the applications cited in this collection. All these outstanding contributions highlight the necessity of this analytical step, present the advantages and disadvantages of each method and focus on the green analytical chemistry guidelines that have to be fulfilled in current analytical practices.

Removal of Organic Pollution in Water Environment

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ISBN: 9783039218400 9783039218417 Year: Pages: 154 DOI: 10.3390/books978-3-03921-841-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General)
Added to DOAB on : 2019-12-09 11:49:16
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The development of civilization entails a growing demand for consumer goods. A side effect of the production and use of these materials is the production of solid waste and wastewater. Municipal and industrial wastewater usually contains a large amount of various organic compounds and is the main source of pollution of the aquatic environment. Therefore, the search for effective methods of wastewater and other polluted water treatment is an important element of caring for the natural environment. This book presents research on the determination and removal of environmentally hazardous organic compounds from aqueous samples. The articles included in this book describe the results of examinations, at the laboratory scale, of the efficiency of chemical as well as physical processes for the removal or degradation of selected model pollutants. Environmental studies, especially those concerning the determination of trace impurities, require effective isolation and concentration procedures. The methods used for this purpose should meet the requirements of green chemistry. The liquid phase microextraction procedures and use of electrochemical methods described in this book seem to be proper for environmental studies, as they are effective and environmentally friendly.

Metal Organic Frameworks: Synthesis and Application

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ISBN: 9783039284863 9783039284870 Year: Pages: 198 DOI: 10.3390/books978-3-03928-487-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Inorganic Chemistry
Added to DOAB on : 2020-04-07 23:07:09
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Metal–organic frameworks are among the most promising novel materials. The concept of MOFs was first introduced in 1990. They were actually initially used in catalysis, gas separation, membranes, electrochemical sensors. Later on, they were introduced as SPE sorbents for PAHs (Polycyclic Aromatic Hydrocarbons) in environmental water samples, then the range expanded to the field of analytical chemistry, both in chromatographic separation and sample preparation, with great success in, e.g., SPE and SPME (Solid Phase Mico-extraction). Since then, the number of analytical applications implementing MOFs as sorbents in sorptive sample preparation approaches is increasing. ?his is reinforced by the fact that, at least theoretically, an infinite number of structures can be designed and synthesized, thus making tuneability one of the most unique characteristics of MOF materials. Moreover, they have been designed in various shapes, such as columns, fibers, and films, so that they can meet more analytical challenges with improved analytical features.Their exceptional properties attracted the interest of analytical chemists who have taken advantage of the unique structures and properties and have already introduced them in several sample pretreatment techniques, such as solid phase extraction, dispersive SPE, magnetic solid phase extraction, solid phase microextraction, stir bar sorptive extraction, etc.

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