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Дисертації з теми "Flame detectors"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Ігнатенко, Володимир Васильйович, Владимир Васильевич Игнатенко, Volodymyr Vasylovych Ihnatenko, С. П. Дорга та Е. В. Маслова. "Математическая модель расчета интенсивности излучения вспышек метано-воздушной и пылевоздушной смеси на датчики пламени в условиях шахтных выработок". Thesis, Издательство СумГУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/21119.

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В работе рассматривается математическая модель расчета воздействия теплового излучения вспышек взрывоопасных воздушных смесей в условиях шахтных выработок на чувствительные элементы датчиков пламени в системах, обеспечивающих безопасность работы шахтеров. При цитировании документа, используйте ссылку http://essuir.sumdu.edu.ua/handle/123456789/21119

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2

Olivier, EI, Toit D. Du, and JH Hamman. "Development of an analytical method for the evaluation of N,N-dimethylformamide in dosage form design." Pharmazie, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000865.

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N,N-Dimethylformamide (DMF) is a well-known chemical entity that is extensively used for pharmaceutical, biomedical and chemical applications. Previous research identified the need for the development of an effective dosage form for the systemic delivery of DMF due to its unique antiviral properties. For purposes of quality control and evaluation during pharmaceutical product development, development of an analytical method was required. A gas chromatographic (GC) method was developed with a flame-ionization detector (FID) on a carbowax packed glass column. 2-Methoxyethanol was used as interna

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3

Narine, Raymond. "A novel microcomputer-controlled transport detector for high-performance liquid chromatography." Thesis, King's College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281718.

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4

Khayamian, Taghi. "Electrospray as a new sample introduction technique for the flame photometric detector." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq24775.pdf.

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5

Silva, Felipe Carvalho da. "Análise comparativa de medidor de vazão em flare por tecnologia ótica e pitometria utilizando túnel de vento." Universidade Federal do Espírito Santo, 2012. http://repositorio.ufes.br/handle/10/6230.

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Made available in DSpace on 2016-12-23T14:08:09Z (GMT). No. of bitstreams: 1 Felipe Carvalho da Silva.pdf: 4181457 bytes, checksum: 8aef395272a667525a72d34c5ffb865f (MD5) Previous issue date: 2012-07-25<br>With recent discoveries by the oil industry related to the reserves in Brazilian pre-salt, flow measurement technology is being re-evaluated in view of the large CO2 concentrations found in these reserves. A technology that has accuracy levels similar to those obtained with flow meters currently used and also measures independent characteristics to the composition and thermodynamic propert

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6

Kuipers, Winfred J. [Verfasser]. "Design, Fabrication and Characterization of a MEMS-Based Counter-Current Flame Ionization Detector / Winfred J. Kuipers." München : Verlag Dr. Hut, 2011. http://d-nb.info/1013526341/34.

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7

Choi, Woong-Sik. "Flame stabilization by a plasma driven radical jet in a high speed flow." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29780.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Zinn, Ben; Committee Co-Chair: Jagoda, Jeff; Committee Member: Glezer, Ari; Committee Member: Jeter, Sheldon; Committee Member: Neumeier, Yedidia. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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8

Лєпіхов, Олександр Іванович, Александр Иванович Лепихов, Oleksandr Ivanovuch Liepikhov та І. Цимбал. "Стенд для визначення чутливості датчиків до полум'я метаноповітряної суміші". Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/21009.

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9

Shinde, Suhas, Shivakumar Devaiah, and Aruna Kilaru. "Profiling Abscisic Acid-Induced Changes in Fatty Acid Composition in Mosses." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etsu-works/4745.

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In plants, change in lipid composition is a common response to various abiotic stresses. Lipid constituents of bryophytes are of particular interest as they differ from that of flowering plants. Unlike higher plants, mosses have high content of very long-chain polyunsaturated fatty acids. Such lipids are considered to be important for survival of nonvascular plants. Here, using abscisic acid (ABA )-induced changes in lipid composition in Physcomitrella patens as an example, a protocol for total lipid extraction and quantification by gas chromatography (GC) coupled with flame ionization detecto

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10

Bernard, Joël. "Design and characterization of a thermochemical high performance liquid chromatography flame photometric detector for the detection of non-volatile andor thermolabile sulfur compounds." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=35982.

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The need for selective and inexpensive detectors in liquid chromatography is of considerable interest in the determination of sulfur compounds. Of the available-selective sulfur methodologies, flame photometric detector coupled to gas chromatography is the most widely used. It has proven to be a sensitive and selective method for detection of heat stable and volatile sulfur compounds. Fundamentally, this technique is not applicable to high boiling and/or thermolabile sulfur compounds. More recently, hyphenated flame photometric detector has been utilized, with limited success, to monitor sulfu

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11

Kozubík, Kamil. "Alternativní metody a algoritmy pro detekci plamene." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217660.

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This master’s thesis deals with flame detection methods. The purpose of the project was to create a flame detector, which uses the alternative method of flame detection. The introduction of this thesis gives the summary overview of the existing methods for flame detection. Further, the existing flame detectors and their applications are described. Two alternative algorithms for flame detection which are based on the digital signal analysis were realized on the PC. Flame detector, which utilizes the digital analysis of audio signal, was realized on 8 bit microcontroller Atmega128 and achieved r

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12

Bernard, Joel. "Design and characterization of a thermochemical high performance liquid chromatography flame photometric detector for the detection of non-volatile and/or thermolabile sulfur compounds." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0015/NQ55302.pdf.

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13

Daphney, Cedrick M. "The Fate and Transport of Chemical Warfare Agent Simulants in Complex Matrices." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/chemistry_theses/13.

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Experiments to determine the fate and transport of the chemical warfare agent (CWA) simulants diisopropyl fluorophosphate (DIFP), O,S-diethyl methylphosphonothioate (OSDEMP), and 2-Chloroethyl ethyl sulfide (CEES) exposed to complex matrix systems are reported here. The aforementioned simulants were used in place of O-isopropyl methylphosphonofluoridate (GB), O-Ethyl S-(2-diisopropylaminoethyl) methylphosphonothiolate (VX), and Bis (2-chloroethyl) sulfide (HD), respectively. At ambient temperature, simulant pH (2.63 to 12.01) and reaction time (1 minute to 24 hours) were found to have signi

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14

Topal, Tansel. "Investigation Of Extraction Methodologies For Quantitative Determination Of Polycyclic Aromatic Hydrocarbons In Sediments." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612913/index.pdf.

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The extraction procedures for the determination of polycyclic aromatic hydrocarbons (PAH) concentrations in sediment samples had been developed by using GC-FID and GC-MS. The optimized methods were soxhlet extraction, ultrasonic bath extraction and solid phase micro extraction (SPME). In order to search out the main factors affecting extraction efficiencies of the methods, factorial design was used. The best extraction method was chosen and optimum values for main factors were selected for the development of the extraction method for PAH determination in sediment samples. The accuracy of the m

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15

Trefjord, Terese. "Investigations on the Applicability of Membrane Introduction as a Sampling Technique for Oil in Air and Water with Flame Ionization Detector (FID) and Mass Spectrometry (MS) Detection." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for kjemi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16363.

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During a membrane introduction (MI) analysis the analytes are separated from the bulk matrix (e.g. air or water) by a semi-permeable membrane and transported to the detector by a carrier gas (usually helium). The most commonly used detector for MI-analyses is the mass spectrometer, resulting in membrane introduction mass spectrometry (MIMS). The main advantages of MIMS are short response times, high sensitivity, simplicity and elimination of sample preparation and pre-separation. Membrane introduction analyses are suitable for detection of volatile organic compounds (VOCs) and semi volatile or

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16

Njie, Njaw. "Use Of Multi-walled Carbon Nanotubes In Matrix Solid Phase Dispersion Extraction Combined With Gas Chromatography." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609590/index.pdf.

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The use of Multi-Walled Carbon Nanotubes (MWCNT) as solid sorbent in Matrix Solid-Phase Dispersion (MSPD) extraction and preconcentration method was presented to determine some commonly used organophosphorus insecticides/OPIs in honey samples using a Gas Chromatography Flame Ionization Detector (GC-FID). OPIs are poisonous compounds used to kill insects and rodents by affecting their nervous system. The limit of detections obtained after MSPD extraction were 7.0 ng/g for Malathion, Malaoxon and Fenitrothion and 33.3 ng/g for Isomalathion. The recovery of the insecticides from spiked honey, ran

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17

Becker, Christian [Verfasser], and Torsten C. [Akademischer Betreuer] Schmidt. "Development of a thermospray nebulizer interface for liquid chromatography with flame ionization detection and detector response studies of volatile and non-volatile compounds / Christian Becker ; Betreuer: Torsten C. Schmidt." Duisburg, 2019. http://d-nb.info/1196008280/34.

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18

Bergner, Sandra, and Sandra Nilsson. "Screening of volatile compounds in washing water and cloths from the sponge cloth process." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57114.

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<p>Freudenberg Household Products AB in Norrköping are manufacturer of sponge cloths with the well-known brand names of Wettex<sup>®</sup> and Vileda<sup>®</sup>. The production is based on the viscose fiber process and involves a high chemical demand. Recent customer complaints involve a diffuse smell from the cloths that is like a “garage odor” and occurs after a few uses. The company’s theory is that the smell derives from a chemical used in the process called Exxal 9.</p><p>The aim was to screen the washing water from two sections and the cloth before and after wash for the presence of Exx

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19

Avillez, Maria Vaz Pinto d’. "Part I : Comparing derivatization methods for amino acids – one and two-step procedures using gas chromatography – flame ion detector (GC-FID) Part II: Story of an icon from its execution until its conservation." Master's thesis, FCT - UNL, 2007. http://hdl.handle.net/10362/3613.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Conservação e Restauro<br>Two derivatization methods were tested in twenty-one standard amino acids (AAs) for further identification and quantification by the analytical technique of Gas Chromatography with Flame Ion Detector (GC-FID). For the one-step derivatization reaction N-methyl-N (tert.- butyldimethylsilyl)trifluoroacetamide (MTBSTFA) was used and for the two-step reaction we used hydrochloridic acid (HCl) and trifluoroacetic anhydride (TFAA). We obtained bet

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20

Divišová, Radka. "Analýza vonných látek v kosmetických prostředcích metodou plynové chromatografie." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-216530.

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This thesis is focused on aroma compounds which are presented in a wide variety of products including perfume, cologne, cosmetics, toiletries, laundry products and detergens. The widespread use and exposure to aroma compounds of aforementioned products could cause a range of the adverse reactions such as contact dermatitis, asthma, eczema and breathing problems. There are a lot of aroma compounds triggering negative allergic reactions but EU regulations limit 26 the most important fragrance allergens. The presence of these substances has to be declared on the product label if a limit of 0,01 %

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21

TIBURZI, CATERINA. "Multidisciplinary studies of pulsar data and applications to Pulsar Timinig Arrays." Doctoral thesis, Università degli Studi di Cagliari, 2015. http://hdl.handle.net/11584/266796.

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Pulsars are fast-rotating, highly-magnetized neutron stars, visible at radio wavelenghts as pulsating obje ts thanks to two beams of emission that are fo ussed on the magneti poles and o-rotate with the star, the rotational axis of whi h is not aligned with the magneti one. The rotational stability and the possibility of measuring the time-of-arrival of the "pulses" of emission with an extreme pre ision allows to onstrain the physi al parameters of these sour es, and to undertake a wide number of studies. In this PhD Thesis, we exploit this hara teristi to explore several a

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22

Åkervall, Anton. "Development of a GC Method for the Quantification of Short Chain Carboxylic Acids in Aqueous Solution." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166367.

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Petroleum powered vehicles emit volatile organic compounds (VOCs) through combustion that contributes to the pollution of the environment. A technique in the 1970s was developed to decrease these emissions, especially for nitrogen oxides (NOx) and sulphuric oxides (SOx) which is called exhaust gas recirculation (EGR). The technique works by recirculating a portion of the combusted gas back into the engine, this limits the NOx and SOx emissions because of lower temperatures and less available oxygen. The problems that follow these effects is the formation and condensation of acids that corrode

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23

Švarcová, Lucie. "Chirální analýza syntetických vonných látek ve vodním ekosystému." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217084.

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Diploma thesis summarizes available information about chiral analysis of synthetic musk compounds in the aquatic environment. In the theoretical part of the thesis chirality and importance of chiral analysis by means of examples of different environmental pollutants is documented. Further consideration is aimed on musk compounds, their classification, characteristics and their fate in the environment, especially in the aquatic environment. After that methods for chiral analysis of synthetic musk compounds are reviewed. The aim of the experimental part of this diploma thesis was to carry out th

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24

"Intercomparison of thermal-optical-flame inoization and combustion-nondispersive infrared methods for the measurement of total carbon in environmental samples." 2001. http://library.cuhk.edu.hk/record=b5890697.

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Sze Sai-tim.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2001.<br>Includes bibliographical references (leaves 77-82).<br>Abstracts in English and Chinese.<br>Acknowledgment --- p.i<br>Abstract (English) --- p.ii<br>Abstract (Chinese) --- p.iii<br>List of Figures --- p.iv<br>List of Tables --- p.v<br>Chapter 1. --- INTRODUCTION<br>Chapter 1.1 --- Air pollution in Hong Kong --- p.1<br>Chapter 1.2 --- Chemical speciation of carbon in air particulates --- p.3<br>Chapter 1.3 --- Carbonaceous compounds in air and their harmful effects --- p.6<br>Chapter 1.4 --- Review of analytical

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25

Yu, Chih-Ming, and 俞志明. "UV Flame Detector." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/22911592847751430132.

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碩士<br>中華大學<br>電機工程學系碩士班<br>91<br>It applies a principle of switch-mode-power-supply in the thesis, Ni-Cd-Battery of 4.8 Volts (DC) converters to 325 Volts (DC). This is driving power supply of UV Flame Detector. After adding a concave mirror that rotates the UV sensor, it increases distance of detection and supplements a defect that angular sensitivity of UV sensor is one-side. In addition, in order to detect exactly, it must be add a chopper. I make a quenching circuit that replaces chopper of mechanization.

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26

Hwang, Liang-Yi, and 黃良義. "Installation Type of Flame Type Detector Sapply in Petrochemical Plant." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/m4y98u.

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碩士<br>國立高雄第一科技大學<br>環境與安全衛生工程系消防與防災工程碩士在職專班<br>105<br>The applications of flame fire detectors are more extensive at present, especially in petrochemical plants, refineries, and semi-conductors industries. Flame fire detector becomes popular everywhere, but people are not familiar with it as smoke fire detector and heat fire detector. Refinery is the high risk manufacturing industry, with large amount of flammable materials and expensive equipments. Once when fire accident was occurred in refineries, the loss would be serious. As the fire detection or the element of automatic fire extinguishi

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27

Jay, Chang-Chy, and 張志杰. "A Study on the Simultaneous Determination of Twelve Food Preservatives by Gas Chromatograph - Flame Ionization Detector." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/74690826112824161663.

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碩士<br>國立屏東科技大學<br>食品科學系所<br>95<br>At present, most methods for determining food preservatives are based on the testing methods of Chinese National Standards （CNS 10949-N6190）. The methods require collecting the distillate by dissolving with pure water or solvent or by steam distillation, to extract the distillate repeatedly with ether at different PH values through multiple complicated processes and then the concentrate must be analyzed by Gas Chromatograph-Flame Ionization Detector （GC-FID）. The above-mentioned methods could be applied when the sample number is small. However, the quantity

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28

Ciou, Jhih-Yong, and 邱志勇. "Simultaneous determination of acetaminophen and caffeine in pharmaceutical syrup preparations and drinks by gas chromatography with flame ionization detector." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/55942200977562766899.

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碩士<br>高雄醫學大學<br>藥學研究所<br>96<br>A simple and rapid method for simultaneous analysis of acetaminophen and caffeine in commercial cold syrups and drinks is described. The method was based on direct gas chromatography with flame ionization detector. The samples were simply pretreated by liquid-liquid extraction and then analyzed by GC with a fused-silica VF-5ms capillary column (30 m × 0.32 mm, 0.25 μm). The temperatures of injector and detector were set at 250℃ and 280℃, respectively. The column oven was maintained at 180℃ for 1 min, ramped at a rate of 20℃/min to 240℃ and held for 1 min. Several

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29

Wei, Hong Chung, and 洪崇惟. "Analysis of Organic Solvent Mixtures in Urine Using Hollow Fiber Headspace Liquid-phase Microextraction and Gas Chromatography with Flame Ionization Detector." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/marf2f.

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碩士<br>長榮大學<br>職業安全與衛生學系碩士班<br>96<br>Multiple organic solvents, such as benzene, toluene, xylene, n-hexane, n-heptane, n-octane and methylcyclohexane, were used in an adhesive of factory. Workers exposure to these different kinds of solvents in the workplace. These substances will be translated into different kinds of metabolites. Therefore, biological monitoring of workers exposed to organic solvents is important step toward the evaluation of the toxicological effect of chemical solvents. In this study, a hollow fiber headspace liquid phase microextraction（HF-HS-LPME） and gas chromatograph

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30

Gil, Inês Faria. "Analysis of methanol’s purity by GC-FID and rainwater analysis by HACH DR3900." Master's thesis, 2019. http://hdl.handle.net/10773/30157.

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Bresfor S.A. is mainly a formaldehyde and UF resins production plant. Its feedstocks are methanol, water, urea and melamine. Methanol is bought in large quantities and it is also sold to other companies, including pharmaceutical companies. That type of companies requires methanol to have a high purity degree and its contaminants to be determined with accuracy. So, Bresfor is to start using GC-FID to determine the purity of methanol and the concentration of the most common contaminants (ethanol, propan-1-ol and acetone). Bresfor’s environmental license given by APA (LA Bresfor nº 539/20

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31

土屋, 晴文, and Harufumi Tsuchiya. "Observation of solar neutrons in association with solar flare using an international network of new type of solar neutron detector." Thesis, 2001. http://hdl.handle.net/2237/19353.

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32

Chiloane, Kgaugelo Euphinia. "Volatile organic compounds(VOC's) analysis from Cape Town haze ll study." Thesis, 2006. http://hdl.handle.net/10539/1611.

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Student Number: 9503012G Master of Science. School of Geography, Archaeology and Environmental Studies<br>A brown haze which builds-up over Cape Town under calm and cold weather conditions causes public concern. The brown haze is thought to be due to the gaseous and particulate emissions from the city, industries, traffic and townships in the Cape Town region. Volatile organic carbon (VOCs) compounds are an important component of the haze layer particularly because of their reactivity. VOCs play an important role in the carbon budget and radiation balance, regional oxidant balance, and in

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