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Volatile Organic Compounds in Environment

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ISBN: 9783038425120 9783038425137 Year: Pages: VIII, 122 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Sciences
Added to DOAB on : 2017-10-02 11:42:58
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Volatile organic compounds (VOCs) are released from both static and mobile sources (e.g., industrial, transport, household, fossil fuels use, and many other sources). They are emitted into the atmosphere, taken up by plants, and ingested by animals to be bio accumulated along the food chain up to the apex predator. Many of these pollutants are classified as being toxic/carcinogenic by varying degrees and pose a worldwide risk to the environment and human health. Exposure (through different exposure pathways, i.e., inhalation, dermal absorption, ingestion, etc.) to those hazardous pollutants can damage the immune, neurological, reproductive (e.g., reduced fertility), developmental, and respiratory systems of humans and animals. More efforts are thus needed to improve the method of their detection and treatment. This Special Issue aims to present articles emphasizing more than one of all the available tools to monitor or treat VOCs: (1) measurement techniques for VOC; (2) treatment techniques for VOC; and (3) all important environmental issues associated with the management of VOCs.

Catalytic Removal of Volatile Organic Compounds

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ISBN: 9783038422136 9783038422143 Year: Pages: 290 DOI: 10.3390/books978-3-03842-214-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Added to DOAB on : 2016-07-12 11:17:23
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The Impact of Microorganisms on Consumption of Atmospheric Trace Gases

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889453269 Year: Pages: 201 DOI: 10.3389/978-2-88945-326-9 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Microbiology
Added to DOAB on : 2018-02-27 16:16:45
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Gases with a mixing ratio of less than one percent in the lower atmosphere (i.e. the troposphere) are considered as trace gases. Numerous of these trace gases originate from biological processes in marine and terrestrial ecosystems. These gases are of relevance for the climate as they contribute to global warming or to the troposphere’s chemical reactive system that builds the ozone layer or they impact on the stability of aerosols, greenhouse, and pollutant gases. These reactive trace gases include methane, a multitude of volatile organic compounds of biogenic origin (bVOCs) and inorganic gases such as nitrogen oxides or ozone. The regulatory function of microorganisms for trace gas cycling has been intensively studied for the greenhouse gases nitrous oxide and methane, but is less well understood for microorganisms that metabolize molecular hydrogen, carbon monoxide, or bVOCs. The studies compiled in this Research Topic reflect this very well. While a number of articles focus on nitrous oxide and methane or carbon monoxide oxidation, only a few articles address conversion processes of further bVOCs. The Research Topic is complemented by three review articles about the consumption of methane and monoterpenes, as well as the role of the phyllosphere as a particular habitat for trace gas-consuming microorganisms, and point out future research directions in the field. The presented scientific work illustrates that the field of microbial regulation of trace glas fluxes is still in its infancy when one broadens the view on gases beyond methane and nitrous oxide. However, there is a societal need to better predict global dynamics of trace gases that impact on the functionality and warming of the troposphere. Upcoming modelling approaches will need further information on process rates, features and distribution of the driving microorganisms to fulfill this demanding task.

Fast-response measurements of organic trace species in the Earth's atmosphere

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ISBN: 9783731503569 Year: Pages: XI, 208 p. DOI: 10.5445/KSP/1000046297 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Physics (General)
Added to DOAB on : 2019-07-30 20:01:59
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This work describes the development of an ultra-light-weight Proton-Transfer-Reaction Mass Spectrometer (PTR-MS), its detailed qualification, ground-based and airborne applications and studies on VOC emissions in connection with fossil fuel production. The new system was used aboard a mobile laboratory in order to investigate the chemical fingerprints of the diverse emitters at oil and natural gas well pads. Emissions of aromatic hydrocarbons at a hydraulically fractured well have been studied.

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: eng
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

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