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  1. Article ; Online: Correction to "Are Most Micrometer Droplets (>10 μm) Wasted in Electrospray Ionization? An Insight from Real-Time High-Speed Imaging".

    Hsu, Chun-Yao / Prabhu, Gurpur Rakesh D / Chang, Ching-Han / Hsu, Pin-Chieh / Buchowiecki, Krzysztof / Urban, Pawel L

    Analytical chemistry

    2024  Volume 96, Issue 10, Page(s) 4330–4331

    Language English
    Publishing date 2024-02-27
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.4c00921
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 4033: Show issues Location:
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  2. Article ; Online: Are Most Micrometer Droplets (>10 μm) Wasted in Electrospray Ionization? An Insight from Real-Time High-Speed Imaging

    Hsu, Chun-Yao / Prabhu, Gurpur Rakesh D. / Zhang, Jinghan / Hsu, Pin-Chieh / Buchowiecki, Krzysztof / Urban, Pawel L.

    Analytical Chemistry. 2023 Sept. 19, v. 95, no. 39 p.14702-14709

    2023  

    Abstract: Electrospray ionization (ESI) is one of the main techniques used in mass spectrometry (MS) of nonvolatile compounds. ESI is a disordered process, in which a large number of polydisperse droplets are projected from a fluctuating Taylor cone and jet ... ...

    Abstract Electrospray ionization (ESI) is one of the main techniques used in mass spectrometry (MS) of nonvolatile compounds. ESI is a disordered process, in which a large number of polydisperse droplets are projected from a fluctuating Taylor cone and jet protruding ESI emitter. Here, we disclose a system for sectioning electrospray plumes to discrete packets with millisecond and submillisecond lifetime, which are introduced to the MS orifice, one at a time. A high-speed camera was triggered at 10,000 frames per second to capture consecutive images of the electrospray packets transmitted to the mass spectrometer. We further correlated the high-speed images of electrospray packets with MS signals of a test analyte (acetaminophen). Following computational treatment of the images, we determined the number of droplet observations (<300), average diameter of droplets (∼10–20 μm), and average volume of droplets (few tens of picoliters) in the individual electrospray packets. The result shows that most micrometer droplets (>10 μm) do not have any significant contribution to the MS signals. This finding is in agreement with the prior conjecture that most of the MS signals are mainly attributed to nanodroplets. Based on this finding, one can deduce that only a small number of the initial microdroplets effectively carry analyte molecules that undergo ionization. We discuss that, in future, one may propose a way to “recharge” the emitted initial micrometer droplets to increase the efficiency of conventional ESI setups.
    Keywords acetaminophen ; analytical chemistry ; cameras ; droplets ; electrospray ionization mass spectrometry ; ionization ; spectrometers
    Language English
    Dates of publication 2023-0919
    Size p. 14702-14709.
    Publishing place American Chemical Society
    Document type Article ; Online
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.3c02799
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Are Most Micrometer Droplets (>10 μm) Wasted in Electrospray Ionization? An Insight from Real-Time High-Speed Imaging.

    Hsu, Chun-Yao / Prabhu, Gurpur Rakesh D / Chang, Ching-Han / Hsu, Pin-Chieh / Buchowiecki, Krzysztof / Urban, Pawel L

    Analytical chemistry

    2023  Volume 95, Issue 39, Page(s) 14702–14709

    Abstract: Electrospray ionization (ESI) is one of the main techniques used in mass spectrometry (MS) of nonvolatile compounds. ESI is a disordered process, in which a large number of polydisperse droplets are projected from a fluctuating Taylor cone and jet ... ...

    Abstract Electrospray ionization (ESI) is one of the main techniques used in mass spectrometry (MS) of nonvolatile compounds. ESI is a disordered process, in which a large number of polydisperse droplets are projected from a fluctuating Taylor cone and jet protruding ESI emitter. Here, we disclose a system for sectioning electrospray plumes to discrete packets with millisecond and submillisecond lifetime, which are introduced to the MS orifice, one at a time. A high-speed camera was triggered at 10,000 frames per second to capture consecutive images of the electrospray packets transmitted to the mass spectrometer. We further correlated the high-speed images of electrospray packets with MS signals of a test analyte (acetaminophen). Following computational treatment of the images, we determined the number of droplet observations (<300), average diameter of droplets (∼10-20 μm), and average volume of droplets (few tens of picoliters) in the individual electrospray packets. The result shows that most micrometer droplets (>10 μm) do not have any significant contribution to the MS signals. This finding is in agreement with the prior conjecture that most of the MS signals are mainly attributed to nanodroplets. Based on this finding, one can deduce that only a small number of the initial microdroplets effectively carry analyte molecules that undergo ionization. We discuss that, in future, one may propose a way to "recharge" the emitted initial micrometer droplets to increase the efficiency of conventional ESI setups.
    Language English
    Publishing date 2023-09-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.3c02799
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 4033: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  4. Book: Chung i chi kʻai fa yü ying yung

    Hsü, Pin-chieh / Yin, Chien-pʻing / Tung, Liang-jung

    1990  

    Title translation Development and application of seed dressings.
    Author's details Hsü Pin-chieh, Yin Chien-pʻing, Tung Liang-jung pien chu
    Keywords Seeds/Protection. ; Agricultural chemicals.
    Language Chinese
    Size 2, 2, 111 p. ;, 19 cm.
    Edition Ti 1 pan.
    Publisher Shan-hsi kʻo hsüeh chiao yü chʻu pan she
    Publishing place Tʻai-yüan
    Document type Book
    ISBN 7537702853 ; 9787537702850
    Database NAL-Catalogue (AGRICOLA)

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