Showing 181 - 200 results of 693 for search '"Gas Chromatography"', query time: 0.07s Refine Results
  1. 181

    Molecular Modelling of Selected Phthalates and Their Interactions with Stationary Phases in Solid-Phase Microextraction by Dariusz Wideł, Jerzy Oszczudłowski, Zygfryd Witkiewicz

    Published 2015-08-01
    “…Extracted samples were analyzed using gas chromatography coupled with mass spectrometry. In the analysis of phthalates extracted from methanol solution, the best extraction efficiency was obtained for the PA phase, whereas for the extraction from aqueous solution, higher efficiency was obtained for the PDMS phase.…”
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  2. 182

    Optimization of the Process for Defatting Sea Cucumber Powder by Supercritical CO2 Extraction and Its Effect on Volatile Flavor Compounds by Gongming WANG, Hui HUANG, Yuzhu DING, Jinglin XUE, Zhiqiang SHU, Yuexin JING, Chunna JIAO, Jian ZHANG

    Published 2025-02-01
    “…The fatty acid composition of the sea cucumber powder before and after extraction as well as that in the supercritical CO2 extract were detected using gas chromatography, and supercritical CO2 extraction of volatile flavor substances was investigated using headspace-gas chromatography-ion migration spectroscopy (HS-GC-IMS). …”
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  3. 183

    Chemical Composition and Antioxidant and Antimicrobial Activities of Wormwood (Artemisia absinthium L.) Essential Oils and Phenolics by Kamel Msaada, Nidhal Salem, Olfa Bachrouch, Slim Bousselmi, Sonia Tammar, Abdulkhaleg Alfaify, Khaldoun Al Sane, Wided Ben Ammar, Sana Azeiz, Adel Haj Brahim, Majdi Hammami, Sawsen Selmi, Ferid Limam, Brahim Marzouk

    Published 2015-01-01
    “…The essential oil composition variability of A. absinthium L. aerial parts collected from four different Tunisian regions was assessed by gas chromatography (GC/FID) and by gas chromatography mass spectrometry (GC/MS). …”
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  4. 184

    Analysis of geothermal impact on metabolite compounds of heat-tolerant plant species using clustering and similarity cliff by N.B. Maulydia, K. Khairan, T.E. Tallei, F. Mohd Fauzi, R. Idroes

    Published 2024-10-01
    “…A total of 343 chemical compounds were discovered in medicinal plants from the geothermal areas through the use of gas chromatography-mass spectroscopy, indicating a significant diversity. …”
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  5. 185

    Preparation, Characterisation and Application of Metal-Doped Carbons for Hydrogen Cyanide Removal by P.A. Barnes, M.J. Chinn, E.A. Dawson, P.R. Norman

    Published 2002-11-01
    “…The filtration performance of these materials was assessed against HCN using inverse gas chromatography. The performance was affected both by the selection of metals and the conditions used in the production of the carbon. …”
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  6. 186

    Adsorption Properties of Silica with Chemically Bonded Amino and Guanidino Groups by T.M. Roshchina, V.Ya. Davydov, N.M. Khrustaleva, A.A. Mandrugin, K.B. Gurevich

    Published 1997-04-01
    “…The influence of the non-homogeneity of the silica support and the nature and amount of modifier employed on the adsorption properties of materials with chemically bonded amino and guanidino groups was studied by means of gas chromatography (GC), adsorption measurements under static conditions and IR spectroscopy. …”
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  7. 187

    FATTY ACID COMPOSITION AND ANTIOXIDANT ACTIVITY OF CAMELLIA NINHII SEED OIL COLLECTED IN LAM DONG PROVINCE by Thi Tu Quyen Tran, Thi Diep Trinh, Thi To Uyen Nguyen, Van Son Le

    Published 2022-03-01
    “…The seed oil of Camellia ninhii was studied for the first time on its fatty acid composition by gas chromatography-mass spectrometry (GC-MS) and antioxidant activity by the DPPH method. …”
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  8. 188

    EFFECT OF SYZYGIUM AROMATICUM L. ESSENTIAL OIL EXTRACT AGAINST PATHOGENIC CANDIDA.ALBICANS IN-VITRO by Ban M.A., O. M. S. Ibrahim

    Published 2024-12-01
    “…The study aimed to evaluate the Syzygium aromaticum extract as antifungal activity and fungicidal against C.albicans. Furthermore, gas chromatography-mass spectrometry (GC-MS) analysis was performed to determine active components of clove oil which indicated the presence of eugenol (41.24%), followed by caryophyllene (18.36%) . …”
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  9. 189

    Pyrolysis of Table Sugar by Adnan Bulut, Selhan Karagöz

    Published 2013-01-01
    “…The composition of bio-oils extracted with diethyl ether was identified by means of gas chromatography mass spectrometry (GC-MS), nuclear magnetic resonance (1H-NMR), and Fourier transform infrared spectroscopy (FTIR). …”
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  10. 190

    Determination of Pesticide Residues in Cannabis Smoke by Nicholas Sullivan, Sytze Elzinga, Jeffrey C. Raber

    Published 2013-01-01
    “…Smoke generated from the smoking devices was condensed in tandem chilled gas traps and analyzed with gas chromatography-mass spectrometry (GC-MS). Recoveries of residues were as high as 69.5% depending on the device used and the component investigated, suggesting that the potential of pesticide and chemical residue exposures to cannabis users is substantial and may pose a significant toxicological threat in the absence of adequate regulatory frameworks.…”
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  11. 191

    Characterization of a Compound Starch-Based Adsorbent for Alcohol—Water Azeotrope Dehydration by Jinsheng Sun, Wenping Wang, Pei Wang, Hao Lv, Xubo Luo, Hong Gao

    Published 2013-09-01
    “…Biosorptive dehydration processes of ethanol, isopropanol and t-butyl alcohol (TBA) using a specially formulated compound starch-based adsorbent (CSA) were investigated and analyzed. The inverse gas chromatography (IGC) experimental results indicated that the CSA was effective for the selective separations at the alcohol and water azeotropes. using batch adsorption and regeneration experiments, the optimal adsorption and regeneration conditions were determined by single-factor and orthogonal design methods. …”
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  12. 192

    Epoxidation of cyclopentene by a low cost and environmentally friendly bicarbonate/peroxide/manganese system by Beatriz Hincapie, Sandra M Llano, Hector F Garces, Diego Espinal, Steven L Suib, Luis J Garces

    Published 2018-02-01
    “…Effects of parameters such as type and amount of solvent, ratio of hydrogen peroxide and manganese sulfate to cyclopentene, presence of additives, and reaction time and temperature on the selectivity to cyclopentene oxide were evaluated. Gas chromatography was used to quantify residual cyclopentene and produced cyclopentene oxide using the internal standard method. …”
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  13. 193

    Elastic Module Study of the Radial Section of Guadua angustifolia Kunth Variety Bicolor by J. I. Cardenas, C. Vargas-Hernández

    Published 2014-01-01
    “…Silicone polymer compounds were identified by gas chromatography/mass spectroscopy.…”
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  14. 194

    Study on the Effect of Electrochemical Dechlorination Reduction of Hexachlorobenzene Using Different Cathodes by Yingru Wang, Xiaohua Lu

    Published 2014-01-01
    “…In order to investigate the degradation law of HCB, a RuO2/Ti material was used as the anode, meanwhile, zinc, stainless steel, graphite, and RuO2/Ti were used as the cathode, respectively. The gas chromatography (GC) was used to analyze the electrochemical products of HCB on different cathodes. …”
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  15. 195

    Carcinogenic and Genotoxicity of some PAHs in commonly consumed smoked fish (<i>Parachanna obscura</i> and <i>Ethmalosa fimbriata) </i> by N.O. Erhunmwunse, S.A. Ekaye

    Published 2019-08-01
    “…Identification and quantitative analysis of PAHs components were achieved by Gas Chromatography/High Performance Liquid Chromatography. …”
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  16. 196

    KHẢO SÁT SỰ HẤP THU HÓA CHẤT BẢO VỆ THỰC VẬT BỞI MnO2 VÀ ỨNG DỤNG ĐỂ XÁC ĐỊNH DƯ LƯỢNG HÓA CHẤT BẢO VỆ THỰC VẬT HỌ CHLOR TRONG MẪU NƯỚC BẰNG PHƯƠNG PHÁP GC-ECD... by Lê Ngọc Chung, Nguyễn Đức Thuận

    Published 2013-12-01
    “…A method for the determination of organochlorine pesticides in the water samples by gas chromatography is described. The method consists of sorption of pesticides in water by Mn02 sorbent with a water: Chloroform (10:1, V/V) mixture. then the target compounds are desorbed with a acetone: n-hexane (3:1, V/V) mixture and final determination by GC-ECD. …”
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  17. 197

    Carcinogenic and Genotoxicity of some PAHs in commonly consumed smoked fish (<i>Parachanna obscura</i> and <i>Ethmalosa fimbriata) </i> by N.O. Erhunmwunse, S.A. Ekaye

    Published 2019-08-01
    “…Identification and quantitative analysis of PAHs components were achieved by Gas Chromatography/High Performance Liquid Chromatography. …”
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    Article
  18. 198

    Age Discrimination of Chinese Baijiu Based on Midinfrared Spectroscopy and Chemometrics by Shiqi Hu, Le Wang

    Published 2021-01-01
    “…Firstly, changing regularities of the substances in Chinese Baijiu are discussed by gas chromatography-mass spectrometry (GC-MS) during the aging process. …”
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  19. 199

    Fatty Acid Compositions of Six Wild Edible Mushroom Species by Pelin Günç Ergönül, Ilgaz Akata, Fatih Kalyoncu, Bülent Ergönül

    Published 2013-01-01
    “…The fatty acids were identified and quantified by gas chromatography and studied using fruit bodies. Fatty acid composition varied among species. …”
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  20. 200

    Detection of Adulteration in Canola Oil by Using GC-IMS and Chemometric Analysis by Tong Chen, Xinyu Chen, Daoli Lu, Bin Chen

    Published 2018-01-01
    “…In this work, 147 adulterated samples were detected by gas chromatography-ion mobility spectrometry (GC-IMS) and chemometric analysis, and two methods of feature extraction, histogram of oriented gradient (HOG) and multiway principal component analysis (MPCA), were combined to pretreat the data set. …”
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