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Volatile organic compounds

Tìm thấy 20+ kết quả cho từ khóa "Volatile organic compounds"

Characterization of volatile organic compound distributions by light weight rotary wing unmanned aerial vehicle

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Keywords: Volatile organic compounds. ozone formation potential. unmanned aerial vehicle.. Volatile organic compounds (VOCs) are known as toxic compounds and contribute a formation of more than 70 % of hazardous air pollutants (Pekey &. The industrial park is one important source emitting VOCs into ambient air environment.

Doctoral Dissertation of Environmenal Engineering: Low temperature catalytic oxidation of volatile organic compounds (VOCs) over catalysts of CuO-Co3O4 on supports

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The process of the solid-solid blending method was studied in the previous research and shown a good activity on oxidizing of organic compounds [63]. The surface of the adsorbent is flat.. Schematic diagram of the core components of an SEM microscope.. where A is the area of the particle, V is the volume of the particle. and ρ is the density of the metal.. The adsorption and desorption of the catalysts are evaluated in the micro- reactor systems, which is shown in Fig.

Monitoring of organic volatile compounds in craft beers during fermentative process

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The present study aimed to evaluate the formation of volatile organic compounds (VOCs) during the fermentation process of three different craft beers, using gas chromatography with headspace sampling. The production of VOCs, which are largely responsible for the flavors of the drink, makes up unique organoleptic characteristics for each beer.

Photochemical smog introduction and episode selection for the ground-level ozone in Hanoi, Vietnam

tainguyenso.vnu.edu.vn

Ozone (O 3 ) is a secondary pollutant formed in the atmosphere throughout a complex non-linear chemical reaction involving two classes of precursors: the reactive volatile organic compounds (VOCs) and the oxides of nitrogen (NOx) in the presence of sunlight.. Ground level O 3 may already be high in large cities like Hanoi and Ho Chi Minh City. The O 3 episode is very important for scene of view of photochemical smog in Hanoi.

Sniffer dogs can identify lung cancer patients from breath and urine samples

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Comparison of volatile organic compounds from lung cancer patients and healthy controls-challenges and limitations of an observational study. Determination of volatile organic compounds as potential markers of lung cancer by gas chromatography-mass spectrometry versus trained dogs.. Identification of volatile lung cancer markers by gas chromatography-mass spectrometry: comparison with discrimination by canines.

Đánh giá mức độ ô nhiễm bụi TSP và PM10 tại khu vực Mông Dương, Quảng Ninh và nhận dạng các nguồn nước thải liên quan

000000253665.pdf

dlib.hust.edu.vn

PVDF: Polyvinyl Diflorit QA/QC: Quality Assurance/Quality Control  Qu ng/ Kichng SPM: Suspended particulate matter  Bng TSP: Total suspended particles  Tng bng VOC : Volatile organic compounds  Cp cht h. 25 Bng II-2: Kt qu hiu chun lu lng cn xuy mu PM10. b Ph l u t ng t t 1. c Ph l u t ng ti Cm Ht 1. g Ph l u t ng t t 2.

Sửa đổi bổ sung phụ lục VI Công ước MARPOL

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Sửa đổi bổ sung phụ lục VI Công ước MARPOL Ngày 1.7.2010, sửa đổi bổ sung Phụ lục VI của MARPOL về hợp chất hữu cơ dễ bay hơi(Volatile Organic Compounds - VOC) bắt đầu có hiệu lực.

Nghiên cứu phát triển phương pháp vi chiết kết hợp với sắc kí khí phân tích hợp chất hữu cơ bay hơi

Thong_tin_ve_luan_an-_English._Tran_Manh_Tri.doc

tainguyenso.vnu.edu.vn

Official thesis title: “Study on development of the hollow needle film microextraction combinated with gas chromatography to analyze the volatile organic compounds”.. Summary of the new findings of the thesis. It was studied to manufacture usefully the HNF-ME new device based on improvements of the SPME device. the film thickness is increased so it is increase limit of determination of the method and micro extracting easily in headspace of aqueous samples and air samples (dynamic HNF-ME.

Estimation of emission factors of air pollutants from the road traffic in Ho Chi Minh City

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Yao-Sheng, Emission factors and characteristics of criteria pollutants and volatile organic compounds (VOCs) in a freeway tunnel study, Science of the Total Environment . John et al., Comparison of emission factors for road traffic from a tunnel study (Gubrist tunnel, Switzerland) and from emission modeling, Atmospheric Environment . Fushimi, Volatile organic compound emission factors from roadside measurements, Atmospheric Environment .

Drugs and Poisons in Humans - A Handbook of Practical Analysis (Part 14)

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Anal Chem Watanabe-Suzuki K, Ishii A, Lee X-P et al. (2000) Analysis of volatile organic compounds by cryogenic oven. trapping gas chromatography. Jpn J Forensic Toxicol in Japanese with an English abstract) 12) Watanabe-Suzuki K, Seno H, Ishii A et al. (1999) Sensitive detection of ethanol in human breath by headspace. capillary gas chromatography with cryogenic oven trapping. 13) Watanabe-Suzuki K, Ishii A, Seno H et al

Sythesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine

000000277048-1.pdf

dlib.hust.edu.vn

Organic Compounds PM10: Particulate Matter less than 10 nm in diameter NMVOCs: Non-Methane Volatile Organic Compounds HC: hydrocarbon A/F ratio: Air/Fuel ratio λ: the theoretical stoichiometric value, defined as ratio of actual A/F to stoichiometric. λ = 1 at stoichiometry (A/F = 14.7) SOF: Soluble Organic Fraction DPM: Diesel Particulate Matter CRT: Continuously Regenerating Trap NM: Noble Metal Cpsi: Cell Per Inch Square In.: inch CZ (Ce-Zr): mixtures of CeO2 and ZrO2 CZALa: mixtures of CeO2,

Article - Concentrations and emissions of gasoline and other vapors from residential vehicle garages, Nồng độ và lượng khí thải của xăng dầu và các loại hơi khác từ khu để xe dân cư

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accepted 1 November 2005 Abstract High concentrations of airborne volatile organic compounds (VOCs) may be present in residential garages due to emissions from vehicles, lawnmowers, storage containers, and many other items stored in the garage. Indoor air. Batterman et al. aspects of the study protocol.

Synthesis and catalytic properties of catalyst system based on CeO2-ZrO2 for the complete oxidation of hydrocarbon to treat motorcycle's exhaust gases

000000253238.pdf

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NOx and SO2 are important in the formation Synthesis and catalytic properties of catalyst system based on CeO2 – ZrO2 for the complete oxidation of hydrocarbon to treat motorcycle’s exhaust gases Nguyen The Tien Organic and Petrochemical Technology 16 of acid precipitation, and NOx and volatile organic compounds (VOCs) can real react in the lower atmosphere to form ozone, which can cause damage to lungs as well as to property [3].

Degradation of Chlorinated hydrocacrbons by natural mineral pyrite

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Experiments were initiated by spiking the vials with known concentration of TCE or CB, then crimp-sealed with Teflon-lined septa and cap with aluminum foil in order to prevent loss of volatile organic compounds (TCE and CB) from individual samples during the course of experiments. pH of the reaction was controlled by oxidation of pyrite and organic compounds. Transformation of TCE and CB by pyrite was monitored over the course of 323 h and 816 h, respectively.

Lyophilized aqueous extract of pinus halepensis (mill.) resin: Chemical composition, antioxidant and antidermatophytic activities

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The antioxidant capacity is determined by measuring inhibition of volatile organic compounds production and the formation of conjugated dienehydroperoxides arising from linoleic acid oxidation which results in the discoloration of β–carotene (Krishnaiah et al., 2011). Antifungal activity of resin LAE of P.halepensis (Mill.) resin. Chemical composition of resin LAE of P.halepensis (Mill.).

Sythesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine

000000277048-3.pdf

dlib.hust.edu.vn

Cadus (2011) MnOx supported on metallic monoliths for the combustion of volatile organic compounds, Chemical Engineering Journal 166, pp.

Qualitative and quantitative enzymatic profile of native trichoderma strains and biocontrol potential against fusarium oxysporum f.sp. cubense race 1

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Contina et al., 2017), T. harzianum has a biotechnological importance due to the production of important enzymes for industrial purposes like cellulases (Libardi et al., 2017. de Souza et al., 2018), lacases (Ranimol et al., 2018), xylanases (Lopez-Ramirez et al., 2018), among others. tomentosum is able to degrade Azo colorants (He et al., 2018) and polycyclic aromatic hydrocarbons (Marchand et al., 2017), whereas, T. gamsii produces volatile organic compounds related to the biocontrol (Chen et al

Drugs and Poisons in Humans - A Handbook of Practical Analysis (Part 5)

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In: Moffat AC, Osselton MD, Widdop B (eds) Clarke’s Analysis of Drugs and Poisons, 3rd edn. (1997) Capillary gas chromatography with cryogenic oven temperature for headspace samples: analysis of chloroform or methylene chloride in whole blood. (2000) Analysis of volatile organic compounds by cryogenic oven. 10) Suzuki S (2001) Analysis of poisonous materials focused on arsenous acid

Đánh giá các phương pháp làm sạch khử trùng không khí

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Hình ảnh: nguyên nhân gây hại trong không khí văn phòng, nhà ở Theo Trung tâm kiểm soát Bệnh Tật USA, phân tích các mối nguy hại trong không khí tòa nhà, văn phòng bao gồm. 35% từ hạt bụi mịn (Dust & Pollen): Có thể xử lý không khí bằng cách các tấm lọc không khí. 31% từ các hợp chất bay hơi (Volatile Organic Compounds như Formandehyde, Tollene. Cần phải xử lý bằng các phương pháp làm sạch không khí đặc biệt.

The in vitro antagonistic effects of some Bacillus spp. on the growth and mycotoxin production of toxigenic aspergilli

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Antifungal lipopeptides, volatile organic compounds produced by species of the genus Bacillus, are mainly biologically active substances used to inhibit fungal growth (Fira et al., 2018.