Showing 261 - 280 results of 562 for search '"Gas Chromatography"', query time: 0.09s Refine Results
  1. 261

    Petroleum Hydrocarbon Fingerprints of Water and Sediment Samples of Buffalo River Estuary in the Eastern Cape Province, South Africa by A. O. Adeniji, O. O. Okoh, A. I. Okoh

    Published 2017-01-01
    “…The extracts were subsequently analyzed by gas chromatography-flame ionization detection. Results showed that total petroleum hydrocarbon (TPH) varied from 7.65 to 477 μg/L in the water and 12.59 to 1,100 mg/kg in the sediments, with mean values of 146.50 ± 27.96 μg/L and 209.81 ± 63.82 mg/kg, respectively. …”
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  2. 262

    Purification, structural elucidation, and in vitro antitumor effects of novel polysaccharides from Bangia fuscopurpurea by Jingna Wu, Xiaoting Chen, Kun Qiao, Yongchang Su, Zhiyu Liu

    Published 2021-01-01
    “…The structural characteristics of BFP-3 were investigated by chemical and spectroscopic methods, including partial acid hydrolysis, methylation analysis, one- and two-dimensional nuclear magnetic resonance, and gas chromatography-mass spectrometry. The results showed that BFP-3 was mainly comprised of rhamnose, arabinose, mannose, glucose, and galactose. …”
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  3. 263

    Effect of Extruding Full-Fat Soy Flakes on Trans Fat Content by Hongxia Feng, Xiaonan Sui, Yunhe Chang, Baokun Qi, Yan Zhang, Yang Li, Lianzhou Jiang

    Published 2014-01-01
    “…It was found that only five different types of TFAs were detected out using gas chromatography-mass spectrometry. Before the extrusion started, the initial amount of total TFAs was 3.04 g/100 g. …”
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  4. 264

    Flash Pyrolysis Experiment on Albizia odoratissima Biomass under Different Operating Conditions: A Comparative Study on Bio-Oil, Biochar, and Noncondensable Gas Products by C. Sowmya Dhanalakshmi, S. Kaliappan, H. Mohammed Ali, S. Sekar, Melvin Victor Depoures, Pravin P. Patil, Baskara Sethupathy Subbaiah, S. Socrates, Habtewolde Ababu Birhanu

    Published 2022-01-01
    “…Fourier transform infrared spectroscopy (FT-IR), gas chromatography mass spectroscopy (GC-MS), and elemental analysis were done on the obtained bio-oil, biochar, and noncondensable gas products. …”
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  5. 265

    Pyrolysis of sawdust in a horizontal tube furnace: Effects of temperature and heating rate on product composition by Selva Kumar Vitiyaa, Lee Zhi Hua, Tan Kok Tat, Sim Jia Huey

    Published 2025-01-01
    “…In this study, pyrolysis of sawdust was conducted in a horizontal tube furnace to investigate the effects of temperatures (400-550 °C) and heating rates (10-20 °C/min) on the composition of products, quality and properties of bio-oil. According to Gas chromatography (GC) analysis, phenol group appears to be the major compound in the bio-oil. …”
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  6. 266

    Estimation of Volatile Organic Compounds (VOCs) and Human Health Risk Assessment of Simulated Indoor Environment Consisting of Upholstered Furniture Made of Commercially Available... by Alena Capíková, Daniela Tesařová, Josef Hlavaty, Adam Ekielski, Pawan Kumar Mishra

    Published 2019-01-01
    “…The concentrations of VOC and TVOC were identified and quantified using a Gas chromatography–Mass spectroscopy (GC-MS) based method. …”
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  7. 267

    An Overview of Energy Recovery from Local Slaughterhouse-Based Gallus gallus domesticus Greasy Residues and Latest Applications by Zacharie Merlin Ayissi, Alain Fokoua Fongain, Leonel Tsafack Dongmo, Hossain Nazia, Rhiad Alloune, Innocent Ndoh Mbue, Ruben Mouangue

    Published 2022-01-01
    “…The postcharacterization values are consistent with the EN14214 biodiesel standard. Gas chromatography coupled with mass spectrometry reveals the intrinsic composition of the acids derived from the developed biodiesel methyl esters. …”
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  8. 268

    Correlation between Follicular Fluid Fatty Acids and Cell-Free Mitochondrial DNA in Women Undergoing Intra-Cytoplasmic Sperm Injections by Zainab M. Alawad, Hanan L. Al-Omary

    Published 2024-12-01
    “…The samples were assessed for fatty acids, utilizing gas chromatography, and for relatively cell-free mitochondrial DNA, real-time polymerase chain reaction (PCR) was used. …”
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  9. 269

    Purification and Structural Characterization of a Novel Water-Soluble Neutral Polysaccharide from Cantharellus cibarius and Its Immunostimulating Activity in RAW264.7 Cells by Long Chen, Xichun Peng, Jiaying Lv, Siyin Liao, Shiyi Ou, Yingbin Shen

    Published 2017-01-01
    “…The characteristics of JP1 were determined by HPGPC, FT-IR spectra, gas chromatography, and Congo Red Method. Immunostimulating activity of JP1 was investigated in RAW264.7 cells. …”
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  10. 270

    Treatment of Wastewater from Thermal Desorption for Remediation of Oil-Contaminated Soil by the Combination of Multiple Processes by Feng Xiao, Jun Yin, Dongsheng Shen, Ting Chen, Li Lv

    Published 2022-01-01
    “…Ultraviolet-visible (UV/Vis), excitation-emission matrix (EEM), fluorescence spectroscopy, and gas chromatography-mass spectroscopy (GC-MS) showed that refractory macromolecular organic pollutants in water were removed, especially aromatics, phenols, and conjugated aldehydes or conjugated ketones, and further ring cleavage of benzene rings and carbocycles with carbon double bonds was observed. …”
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  11. 271

    In Vitro Evaluation of Antimicrobial Efficacy of Extracts Obtained from Raw and Fermented Wild Macrofungus, Lenzites quercina by Olusola Clement Ogidi, Victor Olusegun Oyetayo, Bamidele Juliet Akinyele

    Published 2015-01-01
    “…The quantity of phytochemicals found in the extracts of L. quercina ranged from 14.4 to 20.7 mg/g for alkaloids, 6.1 to 12.8 mg/g for steroids, 4.5 to 10.6 mg/g for saponins, 2.8 to 17.2 mg/g for terpenoids, and 0.41 to 17.1 mg/g for flavonoids. The gas chromatography mass spectrophotometry (GCMS) analysis of the extract reveals the presence of caprylic acid, stearic acid, tetradecanoic acid, methyl-11-octadecenoate, oleic acid, and 4-methyl-2-propyl-1-pentanol. …”
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  12. 272

    Light Hydrocarbon Geochemistry: Insight into Mississippian Crude Oil Sources from the Anadarko Basin, Oklahoma, USA by Ibrahim Atwah, Stephen Sweet, John Pantano, Anthony Knap

    Published 2019-01-01
    “…A set of oil samples was examined for composition using high-performance gas-chromatography and mass-spectrometry techniques. The result shows a distinct geochemical fingerprint reflected in biomarkers such as the abundance of extended tricyclic terpanes, together with heptane star diagrams, and diamantane isomeric distributions. …”
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  13. 273

    Interspecific and Intersexual Differences in the Chemical Composition of Floral Scent in Glochidion Species (Phyllanthaceae) in South China by Daihong Huang, Fuchen Shi, Minwei Chai, Ruili Li, Houhun Li

    Published 2015-01-01
    “…Floral volatiles of male and female flowers of five Glochidion species in south China were collected by dynamic headspace absorption technique and then were chemically analyzed by using gas chromatography-mass spectrometry. A total of 69 compounds were identified from floral scents of five investigated species. …”
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  14. 274

    A Promising Material by Using Residue Waste from Bisphenol A Manufacturing to Prepare Fluid-Loss-Control Additive in Oil Well Drilling Fluid by Zhi-Lei Zhang, Feng-Shan Zhou, Yi-He Zhang, Hong-Wei Huang, Ji-Wu Shang, Li Yu, Hong-Zhen Wang, Wang-Shu Tong

    Published 2013-01-01
    “…Fourier transform infrared (FTIR) spectroscopy, gas chromatography-mass spectrometry (GC-MS), and nuclear magnetic resonance (NMR) were used to characterize the residues. …”
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  15. 275

    The Effect of Supplementing Mushroom Growing Substrates on the Bioactive Compounds, Antimicrobial Activity, and Antioxidant Activity of Pleurotus ostreatus by Senzosenkosi Surprise Mkhize, Mthokozisi Blessing Cedric Simelane, Ishmael Nkoana Mongalo, Ofentse Jacob Pooe

    Published 2022-01-01
    “…The mushroom extracts were screened for bioactive compounds using gas chromatography-mass spectrometry (GC-MS). Antimicrobial activity was carried out using microplate assay, while antioxidant potential was investigated using reducing power assay. …”
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  16. 276

    The Effect of Aromatherapy with Lavender Oil on the Health-Related Quality of Life in Patients with Fibromyalgia by Gulsah Yasa Ozturk, Ibrahim Bashan

    Published 2021-01-01
    “…In addition, the chromatographic analysis of lavender oil was performed with the combined headspace solid-phase microextraction and gas chromatography-mass spectrometry methods. When the quality of life scores were evaluated at baseline and after four weeks of lavender oil treatment, improvements were detected in all the subscales of SF-36 at the end of the study. …”
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  17. 277

    Analytical Method Development for Sodium Valproate through Chemical Derivatization by Murad Abualhasan, Nihaya Wasif Odeh, Ghadeer Naser Younis, Oyoun Fadel Zeidan

    Published 2020-01-01
    “…The problem with valproic acid is the lack of a chromophore, which means that gas chromatography is the sole assay methodology. The introduction of benzoyl and phenyl groups to the molecule is a useful derivatisation, which enables the creation of detectable chromophores for HPLC analysis for pharmaceutical dosages as well as biological systems. …”
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  18. 278

    Chemical Composition of Urtica simensis Grown in Different Regions of Ethiopia by Koju Bedekach Bayba, Amare Aregahegn Dubale, Bewketu Mehari, Minaleshewa Atlabachew

    Published 2020-01-01
    “…In addition, the fatty acid profiles of the leaves were analyzed by using gas chromatography coupled with mass spectrometry. A total of 16 different fatty acids were detected in the samples. …”
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  19. 279

    New Information of the Anatomy and Phytochemical Screening of Pentaclethra macroloba (Willd.) Kuntze (Caesalpinioideae-Leguminosae) Seeds by Zelina Ataíde Correia, Ely Simone Cajueiro Gurgel, Olivia Ribeiro, Ana Cristina de Andrade Aguiar Dias, Ravendra Kumar, Luis Adriano Santos do Nascimento, Eloisa Helena de Aguiar Andrade, Mozaniel Santana de Oliveira

    Published 2023-01-01
    “…The fatty acid profile was determined for gas chromatography (GC-FID). Integument is divided into three strata, monoseriate exotesta, mesotesta formed by several layers of parenchyma cells, and monoseriate endotesta, formed by compressed cells. …”
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  20. 280

    Formation of volatile compounds in salt-mediated naturally fermented cassava by Alberta N.A. Aryee, Christabel Tachie, Aleksei Kaleda

    Published 2025-01-01
    “…The 32 VOCs quantitated on day 50 by headspace solid-phase microextraction (HS-SPME) arrow coupled with gas chromatography–mass spectrometry (GC–MS) and classified as: alcohol (9), aldehydes (6), ketones (5), carboxylic acids (5), esters (3), nitriles (2), phenol (1) and hydrocarbon (1) were affected by the amount of added salt. …”
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