Showing 201 - 220 results of 693 for search '"Gas Chromatography"', query time: 0.06s Refine Results
  1. 201

    Chemical Composition of Aerosols of an Electronic Cigarette by Wen-Hsi Cheng, Chia-Yu Chang, Yi-Ya Chen, Hui-Wen Su

    Published 2021-03-01
    “…The samples were then analyzed using gas chromatography (GC)-mass spectroscopy (MS) to determine the constituents. …”
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    Article
  2. 202

    A Comparative Study of Phytochemical Profile of Different Solvents’ Effects on Total Phenolic Content and Antioxidant Activities of Various Parts of Halimium halimifolium by Sabah El gamouz, Omayma Bouzekri, Mostafa Elidrissi, Ali Amechrouq, M’bark Choukrad

    Published 2022-01-01
    “…It explores extracting the essential oil of this plant and analyzing its chemical composition by the gas chromatography-mass spectrometry (GC/MS). Interesting results have been obtained, in particular, the presence of 26 compounds where the major one is (+)-2-Bornanone (38.26%) followed by Eucalyptol (27.74%). …”
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  3. 203

    GC Method Validation for the Analysis of Menthol in Suppository Pharmaceutical Dosage Form by Murad N. Abualhasan, Abdel Naser Zaid, Nidal Jaradat, Ayman Mousa

    Published 2017-01-01
    “…It is also used in the medical and pharmaceutical fields for its various biological effects. Gas chromatography (GC) is considered to be a sensitive method for the analysis of menthol. …”
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    Article
  4. 204

    GC-MS analysis of cholesterol lowering dietary supplements by Velislava Todorova, Diana Karcheva-Bahchevanska, Stanislava Ivanova

    Published 2024-12-01
    “…In the current study gas chromatography mass spectrometry was performed to analyze ten cholesterol-reducing DSs. …”
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    Article
  5. 205

    Characterization of Volatile Compounds of Bulgur (Antep Type) Produced from Durum Wheat by Saad Ibrahim Yousif, Mustafa Bayram, Songul Kesen

    Published 2018-01-01
    “…In this study, Headspace Solid Phase Microextraction (HS-SPME) and Gas Chromatography–Mass Spectroscopy (GS-MS) methods were used to determine the volatile flavor compounds of bulgur (Antep type, produced from Durum wheat). …”
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    Article
  6. 206

    Optimization of Producing Zein Clove Leaf Essential Oil Nanoparticles for Their Antioxidant Activities by Refilda Refilda, Mutia Ramadani, Ainun Nasution, Imelda Imelda, Yefrida Yefrida, Irmanida Batubara

    Published 2024-10-01
    “…Chemical component analysis using Gas Chromatography Mass Spectrophotometry (GC-MS) showed the presence of 32 compounds with three main compounds, namely trans-?…”
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    Article
  7. 207

    Selective and Accurate Determination Method of Propofol in Human Plasma by Mixed-Mode Cation Exchange Cartridge and GC-MS by Jae Sung Pyo

    Published 2016-01-01
    “…A gas chromatography-mass spectrometry (GC-MS) method for the determination of propofol in human plasma has been developed and validated. …”
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    Article
  8. 208

    DA AMOSTRAGEM À PURIFICAÇÃO: METODOLOGIAS E TÉCNICAS PARA AVALIAÇÃO DE SILOXANOS NO BIOGÁS by Carla M. B. Gomes, Cleuciane T. do Nascimento, Rodolfo A. Schaffner, Guilherme E. Q. Souza, Alessandra Freddo, Daiana G. Martinez, Helton J. Alves

    Published 2025-02-01
    “…In this context, three topics are crucial: (i) sampling techniques (bags, gas cylinders, canisters, adsorbent tubes, and impingers); (ii) detection and quantification methods for VMSs, highlighting gas chromatography coupled with mass spectrometry; and (iii) biogas purification/removal strategies (adsorption, absorption, refrigeration/condensation, biological degradation, and membrane separation). …”
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    Article
  9. 209

    Adsorption–Desorption Cycles for the Separation of Vapour-Phase Ethanol/Water Mixtures by Krzysztof Kupiec, Jan Rakoczy, Lukasz Zieliński, Andreas Georgiou

    Published 2008-04-01
    “…The water vapour content at the column outlet was determined using gas chromatography. During the vacuum desorption step, the upper outlet of the column was connected to a vacuum pump. …”
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    Article
  10. 210

    Process Optimization for Madhuca indica Seed Kernel Oil Extraction and Evaluation of its Potential for Biodiesel Production by S. Sudalai, S. Prabakaran, M. G. Devanesan and A. Arumugam

    Published 2024-12-01
    “…The FAME (94.31%) content of the prepared biodiesel was determined via gas chromatography. As a result, the findings of this study will be useful in further research into the use of Madhuca indica as a potential feedstock for biodiesel production.…”
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  11. 211

    TAXONOMICAL IMPLICATIONS OF NATURAL COMPONENTS IN DELIMITATION OF SOME SPECIES OF ASTERACEAE FAMILY IN BAGHDAD by Rasha A. Al- Souz, H. R. H. Al-Newani

    Published 2024-12-01
    “…The phytochemical screening of hexane extracts from eight plants showed different secondary metabolites in the studied species. Gas chromatography-mass spectrometry (GC-MS) analysis of eight hexane extracts showed the existence of eighty-one chemical compounds of eight taxa of Asteraceae, including hydrocarbons, alcohols, organic acids, esters, amines, and heterocyclic compounds. …”
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    Article
  12. 212

    GC-IMS-Based Preliminary Analysis of Volatile Flavor Compounds in Ejiao at Different Processing Stages by Ning Ma, Rui Guan, Rentang Zhao, Yue Geng

    Published 2022-01-01
    “…In order to find out the changes of flavor substances in the processing of Colla corii asini (Ejiao) and provide reference for the flavor and quality control in the production of Ejiao, gas chromatography-ion mobility spectrometry (GC-IMS) was used to analyze the Ejiao products in different processing stages and establish the fingerprint. …”
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  13. 213

    Effectiveness of Liquid-Liquid Extraction, Solid Phase Extraction, and Headspace Technique for Determination of Some Volatile Water-Soluble Compounds of Rose Aromatic Water by Hale Seçilmiş Canbay

    Published 2017-01-01
    “…Some volatile water-soluble compounds of rose aromatic water were also analyzed by gas chromatography mass spectrometry (GCMS). In any case, it was concluded that one of the solid phase extraction methods led to higher recoveries for 2-phenylethyl alcohol (PEA) in the rose aromatic water than the liquid-liquid extraction and headspace technique. …”
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  14. 214

    Study on chemical composition and biological activities of essential oil of <i>Limnophila aromatica</i> (Lamk.) Merr. by Nguyen Thi Bich Thuyen, Tran Thanh Men, Ho Quoc Phong, Huynh Lien Huong

    Published 2024-12-01
    “…This research focuses on the chemical composition analysed via Gas Chromatography-Mass Spectrometry (GC-MS), antioxidant activity (measured by the DPPH method), and antimicrobial properties (determined using the paper plate method) of the essential oil derived from Limnophila aromatica (Lamk.) …”
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  15. 215

    Effect of Cobalt Addition on the Activity of Nanocrystalline Iron Catalysts in the Cracking of Methane Reaction by Kamila Maj, Ireneusz Kocemba, Zofia Lendzion-Bieluń, Walerian Arabczyk

    Published 2015-08-01
    “…The activity of the catalyst in the reaction was defined by measuring the concentration of hydrogen, which was determined by gas chromatography. After cracking of methane reaction, the sample coated with a carbon deposit was examined with scanning electron microscope with energy-dispersive spectrometer. …”
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  16. 216

    The Aroma Composition of Baby Ginger Paocai by Songming Luo, Qiang Li, Anjun Chen, Xingyan Liu, Biao Pu

    Published 2017-01-01
    “…A total of 86 volatile compounds from the two baby ginger samples were quantified; these compounds were extracted by headspace solid-phase microextraction (HS-SPME) and analyzed by gas chromatography–mass spectrometry (GC-MS). The aroma composition of baby ginger paocai was different from that of fresh baby ginger. …”
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  17. 217

    PRODUÇÃO DE BIONAFTA A PARTIR DE ÁLCOOIS PRIMÁRIOS (C3-C5) VIA PROCESSOS DE DESIDROGENAÇÃO/DESIDRATAÇÃO CATALÍTICA by Adônis Coelho, Gustavo Metzker, Lívia P. de Lima, Eleni Gomes, Mauricio Boscolo

    Published 2025-02-01
    “…Product identification and quantification were achieved through gas chromatography coupled with mass spectrometry (GC-MS). …”
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  18. 218

    Stability and Change in Fatty Acids Composition of Soybean, Corn, and Sunflower Oils during the Heating Process by Ammar Cherif, Amor Slama

    Published 2022-01-01
    “…At each temperature, the variation of the fatty acid composition was determined after 12, 24, 36, 48, and 60 h of treatment by using an improved analytical gas chromatography method. This study showed that the oils, which had undergone a temperature of 150 to 180°C, kept some thermal stability and preserved their fatty acid composition at different treatment periods. …”
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  19. 219

    Direct Analysis of Low-Volatile Molecular Marker Extract from Airborne Particulate Matter Using Sensitivity Correction Method by Satoshi Irei

    Published 2016-01-01
    “…Analysis of artificial sample extracts was directly conducted by gas chromatography-mass spectrometry (GC-MS). After every sample injection, a standard mixture was also analyzed to make a correction on the variation of instrumental sensitivity caused by the unfavorable matrix contained in the extract. …”
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  20. 220

    Alginate Nanoparticles Containing Cuminum cyminum and Zataria multiflora Essential Oils with Promising Anticancer and Antibacterial Effects by Mahmoud Osanloo, Razieh Ranjbar, Elham Zarenezhad

    Published 2024-01-01
    “…The nanoparticles were comprehensively characterized using techniques such as gas chromatography-mass spectrometry (GC-MS), dynamic light scattering (DLS), zetasizer, attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), and ultraviolet-visible spectroscopy (UV-Vis). …”
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