Showing 241 - 260 results of 1,810 for search '"Mass spectrometry"', query time: 0.07s Refine Results
  1. 241

    Authenticity Assessment of (E)-Cinnamic Acid, Vanillin, and Benzoic Acid from Sumatra Benzoin Balsam by Gas Chromatography Combustion/Pyrolysis Isotope Ratio Mass Spectrometry by Deshou Mao, Liu Hong, Lei Fu, Zhiyu Li, Jianhua Chen, Chengming Zhang, Yiqin Wu, Wen Xiong, Jin Wang

    Published 2022-01-01
    “…Authenticity assessment of (E)-cinnamic acid, vanillin, and benzoic acid from various origins (n = 26) was performed using gas chromatography-isotope ratio mass spectrometry coupled with combustion and pyrolysis mode (GC-C/P-IRMS). …”
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    Evaluation of Malathion and Malaoxon Contamination in Buffalo and Cow Milk from Afyonkarahisar Region, Turkey, Using Liquid Chromatography/Tandem Mass Spectrometry – a Short Report by Kara Recep, Ince Sinan

    Published 2016-03-01
    “…Malathion and malaoxon levels were determined by means of liquid chromatography/tandem mass spectrometry. In the study, neither malathion nor malaoxan was detected in buffalo and cow milk samples. …”
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    Determination of 2-Propenal Using Headspace Solid-Phase Microextraction Coupled to Gas Chromatography–Time-of-Flight Mass Spectrometry as a Marker for Authentication of Unrefined Sesame Oil by Ahmad Rois Mansur, Tae Gyu Nam, Hae Won Jang, Yong-Sun Cho, Miyoung Yoo, Dongwon Seo, Jaeho Ha

    Published 2017-01-01
    “…Here, the determination of 2-propenal was performed by headspace solid-phase microextraction (HS-SPME) under mild temperature coupled to gas chromatography with time-of-flight mass spectrometry, enabling the detection of adulteration of unrefined sesame oil with refined corn or soybean oil. …”
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    Multiresidue Method for Quantification of Sulfonamides and Trimethoprim in Tilapia Fillet by Liquid Chromatography Coupled to Quadrupole Time-of-Flight Mass Spectrometry Using QuEChERS for Sample Preparation by Kátia S. D. Nunes, Márcia R. Assalin, José H. Vallim, Claudio M. Jonsson, Sonia C. N. Queiroz, Felix G. R. Reyes

    Published 2018-01-01
    “…A multiresidue method for detecting and quantifying sulfonamides (sulfapyridine, sulfamerazine, sulfathiazole, sulfamethazine, sulfadimethoxine, sulfamethoxazole, and sulfamethoxypyridazine) and trimethoprim in tilapia fillet (Oreochromis niloticus) using liquid chromatography coupled to mass spectrometry was developed and validated. The sample preparation was optimized using the QuEChERS approach. …”
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  10. 250

    Effectiveness of Different Organic Solvent Additions to Water Samples for Reducing the Adsorption Effects of Organic Pesticides Using Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry by Yucan Liu, Xinyi Xu, Ying Wang, Yan Zhang, Jianbo Lu, Chengbin Liu, Jinming Duan, Hongwei Sun

    Published 2025-01-01
    “…This study systematically investigated the effect of organic solvent addition on the detection signal intensity of 15 organic pesticides in water using ultra-high-performance liquid chromatography–electrospray ionization–tandem mass spectrometry (UHPLC–ESI–MS/MS). The analysis of chromatographic peak area ratios in ultrapure water (UPW) versus 30% methanol (MeOH)–UPW showed that the adsorption effects (AEs, mainly from injection vials with weaker polarity) were the main factor influencing the detection intensity of the organic pesticides. …”
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  11. 251

    Rapid Determination of 26 Pyrrolizidine Alkaloids in Milk Power and Liquid Milk by Solid Phase Extraction Combined with Ultra-high Performance Liquid Chromatography-Tandem Mass Spectrometry by CHEN Yankai

    Published 2024-12-01
    Subjects: “…solid phase extraction; ultra-high performance liquid chromatography-tandem mass spectrometry; milk powder and liquid milk; pyrrolizidine alkaloids…”
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    A Liquid Chromatography with Tandem Mass Spectrometry-Based Proteomic Analysis of Primary Cultured Cells and Subcultured Cells Using Mouse Adipose-Derived Mesenchymal Stem Cells by Yoshiki Nakashima, Saifun Nahar, Chika Miyagi-Shiohira, Takao Kinjo, Naoya Kobayashi, Issei Saitoh, Masami Watanabe, Jiro Fujita, Hirofumi Noguchi

    Published 2019-01-01
    “…In this study, a protein expression analysis was performed by liquid chromatography with tandem mass spectrometry (LC-MS/MS) using mouse primary cultured cells (P0) and cells passaged three times (P3) as samples. …”
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  14. 254

    Urinary Metabolomics on the Biochemical Profiles in Diet-Induced Hyperlipidemia Rat Using Ultraperformance Liquid Chromatography Coupled with Quadrupole Time-of-Flight SYNAPT High-Definition Mass Spectrometry by Hua Miao, Hua Chen, Xu Zhang, Lu Yin, Dan-Qian Chen, Xian-Long Cheng, Xu Bai, Feng Wei

    Published 2014-01-01
    “…Ultraperformance liquid chromatography coupled with quadrupole time-of-flight synapt high-definition mass spectrometry metabolomics was used to characterize the urinary metabolic profiling of diet-induced hyperlipidaemia in a rat model. …”
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  15. 255

    Global proteomics and affinity mass spectrometry analysis of human Schwann cells indicates that variation in and loss of neurofibromin (NF1) alters protein expression and cellular and mitochondrial metabolism by Christian X Fay, Elizabeth R.M. Zunica, Elias Awad, William Bradley, Cameron Church, Jian Liu, Hui Liu, David K. Crossman, James A. Mobley, John P. Kirwan, Christopher L. Axelrod, Erik Westin, Robert A. Kesterson, Deeann Wallis

    Published 2025-01-01
    “…Abstract In efforts to evaluate potential biomarkers and drug targets for Neurofibromatosis Type I (NF1) we utilized affinity mass spectrometry and global proteomics to investigate how variation within and loss of NF1 affect immortalized human Schwann cells. …”
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