Showing 61 - 80 results of 132 for search '"mass spectrometry"', query time: 0.06s Refine Results
  1. 61

    Biomonitoring potential of trace metal accumulation and bioavailability in coral skeletons and reef sediments of Persian Gulf: A comparative study by Seyed Hassan Mousavi, Mehdi Gholamalifard, Seyed Mahmoud Ghasempouri

    Published 2025-01-01
    “…Finally, trace metals were analyzed using Inductively Coupled Plasma Mass Spectrometry instrument. The results show severe anthropogenic pollution at sites I and II compared to site III and significant differences between their sampling stations. …”
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    Article
  2. 62

    Quality Evaluation of Wushan Codonopsis pilosula with Different Growth Years by Meiling GUO, Wenpin WANG, Luhan HUANG, Lili YANG, Yusen YUE, Sibo QIU, Jianquan KAN, Muying DU

    Published 2025-02-01
    “…High performance liquid chromatography and gas chromatography-mass spectrometry (GC-MS) were used to analyse for differences in nutrients, organic acids, hydrolysed amino acids, active ingredients and volatile components. …”
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  3. 63

    Establishment of Sensory Evaluation Method for Wolfberry Tea and Exploration of the Main Characteristic Aroma Substances by Yuanchao LI, Qinji LI, Yuqiong GUO, Zhilong HAO, Shan JIN

    Published 2025-02-01
    “…Based on the physicochemical methods and gas chromatography mass spectrometry (GC-MS) technology, the difference of taste and aroma substances between buds and leaves of wolfberry tea, were analyzed, and the main characteristic aroma compounds of wolfberry tea were explored. …”
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  4. 64

    Rapid detection of Tulipalin A with SESI-Orbitrap MS: an exploration across spring flowers by An N. T. Phan, Roy Eerlings, Hendrik G. Mengers, Lars M. Blank

    Published 2025-02-01
    “…Results Here, we demonstrated the secondary electrospray ionization coupled Orbitrap mass spectrometry (SESI-Orbitrap MS) methodology for quantifying tulipalin A release from plants upon injury. …”
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  5. 65

    Association between microplastics and the functionalities of human gut microbiome by Bei Gao, Lixia Chen, Lizhi Wu, Shirui Zhang, Sunan Zhao, Zhe Mo, Zhijian Chen, Pengcheng Tu

    Published 2025-01-01
    “…In the present study, concentrations of microplastics in human blood were detected through pyrolysis-gas chromatography/mass spectrometry in 39 adults. Five types of microplastics were found in human blood, including polyvinyl chloride, polyethylene, polypropylene, polystyrene, and polyamide 66. …”
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  6. 66

    Cerebrovascular accidents association between serum trace elements and toxic metals level, a case-control study. by Khosro Jamebozorgi, Alireza Kooshki, Mahbobeh Saljoughi, Mohamadjavad Sanjari, Zahra Ahmadi, Seyed Mohammad Mosavi Mirzaei

    Published 2025-01-01
    “…The serum level of several metals, including Fe (Iron), Co (Cobalt), Ni (Nickel), Cu (copper), Zn (Zinc), Mn (Manganese), Pb (lead), Hg (Mercury), has been assessed using Inductively coupled plasma mass spectrometry (ICP-MS) method. Logistic regression (LR) has also been used to determine the association between metals' levels and CVA occurrence.…”
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  7. 67
  8. 68

    Systematic application of UPLC-Q-ToF-MS/MS coupled with chemometrics for the identification of natural food pigments from Davidson plum and native currant by Thomas Owen Hay, Melissa A. Fitzgerald, Joseph Robert Nastasi

    Published 2025-01-01
    “…The species were quantitatively assessed for colour properties using the CIELAB colour system in conjunction with Ultra Performance Liquid Chromatography-Quadrupole Time of Flight Tandem Mass Spectrometry (UPLC-Q-ToF-MS/MS). The results highlight diverse phenolic, flavonoid, and significant anthocyanin levels in Davidson plum and native currant, contributing to their robust red hues, comparable to commercial blueberry standards. …”
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  9. 69

    Differentiation and characterization of volatile compounds in five common milk powders using HS-GC-IMS, HS-SPME-GC–MS, and multivariate statistical approaches by Yaxi Zhou, Diandian Wang, Jian Zhao, Yu Guo, Wenjie Yan

    Published 2025-01-01
    “…This study analysed and identified the flavor characteristics of five common types of milk powders in China, including yak milk powder, donkey milk powder, camel milk powder, goat milk powder, and cow milk powder, using Headspace-Gas Chromatography-Ion Mobility Spectrometry (HS-GC-IMS), Headspace Solid-Phase Microextraction-Gas Chromatography-Mass Spectrometry (HS-SPME-GC–MS), and multivariate statistical analysis. …”
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  10. 70

    Evaluation of Small Intestinal Permeability in Patients with Overlap Syndrome (Autoimmune Hepatitis/Primary Biliary Cholangitis) by D. R. Akberova, A. Kh. Odintcova, D. I. Abdulganieva

    Published 2023-06-01
    “…The determination of the permeability of the small intestine was carried out by a “double sugar test” (the ratio of lactulose/mannitol in urine), using the method of high-performance liquid chromatography — mass spectrometry.Results. In patients with AIH/PBC, an increase in intestinal permeability was found — 0.20 [0.09; 0.30] (p < 0.001) compared with the control group 0.01 [0.01; 0.02]. …”
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  11. 71

    Comparative studies on physicochemical properties, volatile flavor substances and microbial community of Mianning ham at different altitudes by Qianhui Zeng, Lili Ji, Wei Wang, Jiamin Zhang, Ting Bai, Ling Gan, Lin Chen

    Published 2025-02-01
    “…BackgroundThis study explores the impact of varying altitudes on the quality characteristics of Mianning ham.MethodsBy utilizing Solid-Phase Microextraction—Gas Chromatography–Mass Spectrometry (SPME-GC-MS) technology and high-throughput sequencing techniques, the physicochemical properties, volatile flavor compounds, and shifts in microbial communities of Mianning ham at different altitudes were investigated.ResultsHam’s water content, aw, pH, malondialdehyde content,and nitrite content at high altitudes were higher, while the salt content of ham at low altitudes was higher. 112 volatile compounds were identified in ham fermented for 0, 1, and 2 years at low altitude and high altitude, and the volatile compounds in ham at high altitude were more abundant than those in ham at low altitude. …”
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  12. 72

    Urine amino acid and gamma aminobutyric acid level in COVID 19 patients by Cemal Kazezoglu, Arzu İrvem, Yasemin Tuba Sutasir, Büşra Çakiroglu, Banu Kirgiz, Habip Yilmaz, Ali Kocatas

    Published 2025-02-01
    “…The amino acid profile of these patients' urine samples, 30 different amino acid levels and creatine levels were examined using the liquid chromatography-mass spectrometry (LCMS) method on the SCIEX QTRAP 4500 device. …”
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  13. 73

    Antimicrobial and antiproliferative activity of biosynthesized manganese nanocomposite with amide derivative originated by endophytic Aspergillus terreus by Nashwa El-Gazzar, Reem Farouk, Nervana S. Diab, Gamal Rabie, Basel Sitohy

    Published 2025-02-01
    “…In addition, the most potent product was identified based on instrumental analysis through Nuclear magnetic resonance (NMR), Fourier-transform infrared (FTIR), and Gas chromatography-mass spectrometry (GC.MS). The purified product was combined with biosynthsesized manganese nanoparticles (MnNPs) for the production of nanocomposite (MnNCs). …”
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  14. 74

    Seasonal Variability of PM10 Chemical Composition Including 1,3,5-triphenylbenzene, Marker of Plastic Combustion and Toxicity in Wadowice, South Poland by Przemysław Furman, Katarzyna Styszko, Alicja Skiba, Damian Zięba, Mirosław Zimnoch, Magdalena Kistler, Anne Kasper-Giebl, Stefania Gilardoni

    Published 2020-11-01
    “…Ion chromatography (IC) was used for analysis of cations and anions, while gas chromatography-mass spectrometry (GC-MS) was used for PAHs. Samples were also analyzed for OC/EC (organic/elemental carbon) by thermal-optical analysis with a Sunset Laboratory carbon analyzer, Sunset Inc. …”
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  15. 75

    Metabolomics approach reveals key plasma biomarkers in multiple myeloma for diagnosis, staging, and prognosis by Xiaoxue Wang, Longhao Cheng, Aijun Liu, Lihong Liu, Lili Gong, Guolin Shen

    Published 2025-02-01
    “…Metabolites were analyzed and identified using ultra high liquid chromatography coupled with Q Orbitrap mass spectrometry (UPLC-HRMS), followed by verification through a self-built database. …”
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  16. 76

    Evaluation of volatile safety in children's play mats based on non-targeted screening and risk prioritization by Shuang Liang, Haoyang Shi, Yinhui Yang, Qing Zhang, Zhijuan Wang, Qing Lv

    Published 2025-01-01
    “…In this study, 34 play mats, comprising four materials (3 EPE, 15 XPE, 5 PVC, 11 EVA), were subjected to non-targeted screening based on headspace gas chromatography-Orbitrap high-resolution mass spectrometry (HS-GC-Orbitrap HRMS), which screened out 71 volatile substances. …”
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  17. 77

    Metabolomics-based study on the effect of low-voltage electrostatic field treatment on the storage quality of postharvest square bamboo shoots by Xi Wang, Yingchun Mu, Wei Su, Xing Lei, Zuhao Wang, Pulai Zhang

    Published 2025-01-01
    “…This study explored the effects of LP treatment on the storage quality of square bamboo shoots using physicochemical, gas chromatography–mass spectrometry, and metabolomics methods. Results showed that with prolonged storage, the LP-treated group had lower activities of peroxidase, phenylalanine ammonia-lyase, and lower levels of malondialdehyde, cellulose, and lignin compared to the control group, while superoxide dismutase and catalase activities and shear force values were higher. …”
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  18. 78

    Concurrent Extraction and Analysis of Atmospheric Particulate Matter-bound PBDEs, PAHs, Nitrated PAHs, and OPEs by Hsin-Chieh Kung, Bo-Wun Huang, Chien-Er Huang, Nicholas Kiprotich Cheruiyot, Guo-Ping Chang-Chien

    Published 2023-12-01
    “…After a series of cleanup and fractionation steps involving silica gel and alumina columns, PBDEs were analyzed using high-resolution gas chromatography-high-resolution mass spectrometry (HRGC-HRMS), while PAHs, N-PAHs, and OPEs were analyzed using GC-MS/MS. …”
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  19. 79

    Indoor Air Exposure to Multiple Agricultural Pesticides Potentially Posing the Highest Risk to Young Children by Sithembiso Sifiso Msibi, Chung-Yu Chen, Cheng-Ping Chang, Chiou-Jong Chen, Su-Yin Chiang, Kuen-Yuh Wu

    Published 2021-06-01
    “…Applying liquid chromatography with tandem mass spectrometry (LC-MS/MS) to the samples revealed mean ametryn, atrazine, pendimethalin and 2,4-dichlorophenoxyacetic acid (2,4-D) concentrations of 0.75, 0.32, 0.57 and 0.004 µg m−3, respectively, in the applicator households and corresponding values of 0.19, 0.03, 0.04 and 0.003 µg m−3, respectively, in the non-applicator households. …”
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  20. 80

    In vitro propagation of Codonopsis pilosula (Franch.) Nannf. using apical shoot segments and phytochemical assessments of the maternal and regenerated plants by Roggers, Gang, Richard, Komakech, Yuseong, Chung, Denis, Okello, Wook, Jin Kim, Byeong, Cheol Moon, Nam, Hui Yim, Youngmin, Kang

    Published 2023
    “…Furthermore, the tissues (roots and shoots) of maternal and in vitro‑regenerated C. pilosula plants were subjected to Fourier‑transform near‑infrared (FT‑NIR) spectrometry, Gas chromatography‑mass spectrometry (GC–MS), and their total flavonoids, phenolics, and antioxidant capacity were determined and compared. …”
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