Showing 101 - 120 results of 1,810 for search '"Mass spectrometry"', query time: 0.07s Refine Results
  1. 101

    Trends towards Effective Analysis of Fluorinated Compounds Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Ruth Lorivi Moirana, Thomas Kivevele, Josephine Mkunda, Kelvin Mtei, Revocatus Machunda

    Published 2021-01-01
    “…Inductively coupled plasma mass spectrometry (ICP-MS) is a promising technique for analysis of FCs and has been rated as the most powerful tool in analytical chemistry. …”
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    Article
  2. 102

    Isolation and Identification of Chemical Constituents from Zhideke Granules by Ultra-Performance Liquid Chromatography Coupled with Mass Spectrometry by Guangqiang Huang, Jie Liang, Xiaosi Chen, Jing Lin, Jinyu Wei, Dongfang Huang, Yushan Zhou, Zhengyi Sun, Lichun Zhao

    Published 2020-01-01
    “…Chemical constituents from Zhideke granules were rapidly isolated and identified by ultra-performance liquid chromatography (UPLC) coupled with hybrid quadrupole-orbitrap mass spectrometry (MS) in positive and negative ion modes using both full scan and two-stage threshold-triggered mass modes. …”
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    Article
  3. 103

    Comparison of inductively coupled plasma mass spectrometry and molybdenum blue colorimetry for total phosphorus determination in freshwater invertebrates. by Molly S Costanza-Robinson, Baker J Angstman, Qiting Cai, Charles Forbes, Julia S Keon, Shuyi Lin, Emma D Neill, Elizabeth G Peebles, Ella Roelofs, Eric K Moody

    Published 2025-01-01
    “…However, other elemental methods for P determination are available, including inductively coupled plasma mass spectrometry (ICP-MS). Given the extensive literature using MBC to determine P in organismal samples, it is important to assess P analyses by ICP-MS and MBC to ensure that the two methods produce comparable data. …”
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    Article
  4. 104

    Response in Ambient Low Temperature Plasma Ionization Compared to Electrospray and Atmospheric Pressure Chemical Ionization for Mass Spectrometry by Andreas Kiontke, Susan Billig, Claudia Birkemeyer

    Published 2018-01-01
    “…Modern technical evolution made mass spectrometry (MS) an absolute must for analytical chemistry in terms of application range, detection limits and speed. …”
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    Article
  5. 105

    Determination of Vitamin B12 in Milk and Dairy Products by Isotope-Dilution Liquid Chromatography Tandem Mass Spectrometry by Baifen Huang, Jingshun Zhang, Mengli Wang, Zengxuan Cai

    Published 2022-01-01
    “…An isotope-dilution liquid chromatography tandem mass spectrometry method was established for the determination of vitamin B12 in milk and dairy products. …”
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    Article
  6. 106

    Determination of 4-Methylimidazole in Ammonia Caramel Using Gas Chromatography–Tandem Mass Spectrometry (GC-MS/MS) by Martyna N. Wieczorek, Krzysztof Przygoński, Henryk H. Jeleń

    Published 2018-01-01
    “…A method of 4-MeI determination based on ion-pair extraction and derivatisation with isobutyl chloroformate with subsequent gas chromatography-tandem mass spectrometry analysis was proposed. Tandem mass spectrometry was applied to reduce the influence of matrix and increase the selectivity and sensitivity of the method. …”
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    Article
  7. 107
  8. 108

    Study of Grape Polyphenols by Liquid Chromatography-High-Resolution Mass Spectrometry (UHPLC/QTOF) and Suspect Screening Analysis by Riccardo Flamini, Mirko De Rosso, Luigi Bavaresco

    Published 2015-01-01
    “…This method, coupled to liquid chromatography-high-resolution mass spectrometry, is effective in the study of grape metabolomics, in particular for characterization of flavonols, stilbene derivatives, and anthocyanins. …”
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    Article
  9. 109
  10. 110

    Optimization and Validation of Thermal Desorption Gas Chromatography-Mass Spectrometry for the Determination of Polycyclic Aromatic Hydrocarbons in Ambient Air by Iñaki Elorduy, Nieves Durana, José Antonio García, María Carmen Gómez, Lucio Alonso

    Published 2018-01-01
    “…Thermal desorption (TD) coupled with gas chromatography/mass spectrometry (TD-GC/MS) is a simple alternative that overcomes the main drawbacks of the solvent extraction-based method: long extraction times, high sample manipulation, and large amounts of solvent waste. …”
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    Article
  11. 111

    Compound-Specific Chlorine Isotope Analysis of Organochlorine Pesticides by Gas Chromatography-Negative Chemical Ionization Mass Spectrometry by Jing Zhang, Shenghua Liu, Jianye Gui, Xiaoya Li, Guochen Qi

    Published 2021-01-01
    “…To overcome the mentioned problems, a novel method has been developed for the CSIA-Cl of eight organochlorine pesticides using gas chromatography-negative chemical ionization mass spectrometry (GC-NCI-qMS) in this study. The instrument parameters, acquisition mode, and required injection amounts were optimized in terms of the precision of GC-NCI-qMS. …”
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    Article
  12. 112
  13. 113
  14. 114

    Extraction-Free, Direct Determination of Caffeine in Microliter Volumes of Beverages by Thermal Desorption-Gas Chromatography Mass Spectrometry by Xianglu Peng, Melanie Brown, Paul Bowdler, Kevin C. Honeychurch

    Published 2020-01-01
    “…Using a pyrolysis-gas chromatography mass spectrometry system, the conditions required for the direct thermal desorption-gas chromatography mass spectrometry (TD-GC/MS) determination of caffeine were optimised. …”
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    Article
  15. 115
  16. 116

    Characterization of Dissolved Organic Matter in River Water by Conventional Methods and Direct Sample Analysis-Time of Flight-Mass Spectrometry by T. Garrido Reyes, J. Mendoza Crisosto

    Published 2016-01-01
    “…The technique of direct sample analysis-time of flight-mass spectrometry (DSA-TOF-MS) was used to obtain more information on the composition of dissolved organic matter. …”
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    Article
  17. 117

    Identification of the Related Substances in Ampicillin Capsule by Rapid Resolution Liquid Chromatography Coupled with Electrospray Ionization Tandem Mass Spectrometry by Lei Zhang, Xian Long Cheng, Yang Liu, Miao Liang, Honghuan Dong, Beiran Lv, Wenning Yang, Zhiqiang Luo, Mingmin Tang

    Published 2014-01-01
    “…Rapid Resolution Liquid Chromatography coupled with Electrospray Ionization Tandem Mass Spectrometry (RRLC-ESI-MSn) was used to separate and identify related substances in ampicillin capsule. …”
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    Article
  18. 118

    Comparison of Electrospray Ionization and Atmospheric Chemical Ionization Coupled with the Liquid Chromatography-Tandem Mass Spectrometry for the Analysis of Cholesteryl Esters by Hae-Rim Lee, Sunil Kochhar, Soon-Mi Shim

    Published 2015-01-01
    “…The approach of two different ionization techniques including electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) was tested for the analysis of cholesteryl esters (CEs). …”
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    Article
  19. 119

    Profiling of Flavonoid Constituents in Sophora davidii Using UHPLC-Q-Exactive Orbitrap Mass Spectrometry and Evaluation of Antioxidant Activity by Shihan Qin, Xue Jiang, Shani Li, Qing Li, Jin Huang, Qingjiao He, Wei Cai

    Published 2024-01-01
    “…In this study, UHPLC-Q-Exactive Orbitrap mass spectrometry investigations were applied to obtain the profiling of the flavonoids in S. davidii. …”
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    Article
  20. 120

    A Urine Metabonomics Study of Rat Bladder Cancer by Combining Gas Chromatography-Mass Spectrometry with Random Forest Algorithm by Mengchan Fang, Fan Liu, Lingling Huang, Liqing Wu, Lan Guo, Yiqun Wan

    Published 2020-01-01
    “…A urine metabolomics study based on gas chromatography-mass spectrometry (GC-MS) and multivariate statistical analysis was applied to distinguish rat bladder cancer. …”
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    Article