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  1. AU="Douglas, David N"
  2. AU="King, Gary"
  3. AU="Barbera, Lauren"
  4. AU="Carlino, Antonio"
  5. AU="Shan, Qing-Hua"
  6. AU="Starko, S"
  7. AU="Lievre, Loïc"
  8. AU=Cammack N
  9. AU="Xia, Qin"
  10. AU="Ong, Ju Lynn"
  11. AU="Cullin, Christophe"
  12. AU="Georg K.S. Andersson"
  13. AU="Jeannel, Gaël-François"
  14. AU="Stuart Woods"
  15. AU="Shchegolev, A."
  16. AU="Nadeau, Pierre-Louis"
  17. AU="Gordon, David E A"
  18. AU="Shahid Mahmood"
  19. AU="Rosenblatt, Karin"
  20. AU="Dasgupta, Suvankar"
  21. AU=Nguyen Sylvain AU=Nguyen Sylvain

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  1. Artikel ; Online: Interference-free determination of sub ng kg

    Petrov, Panayot / Russell, Ben / Douglas, David N / Goenaga-Infante, Heidi

    Analytical and bioanalytical chemistry

    2017  

    Abstract: Long-lived high abundance radionuclides are of increasing interest with regard to decommissioning of nuclear sites and longer term nuclear waste storage and disposal. In many cases, no routine technique is available for their measurement in nuclear waste ...

    Abstract Long-lived high abundance radionuclides are of increasing interest with regard to decommissioning of nuclear sites and longer term nuclear waste storage and disposal. In many cases, no routine technique is available for their measurement in nuclear waste and low-level (ng kg
    Sprache Englisch
    Erscheinungsdatum 2017-10-13
    Erscheinungsland Germany
    Dokumenttyp Journal Article
    ZDB-ID 201093-8
    ISSN 1618-2650 ; 0016-1152 ; 0372-7920
    ISSN (online) 1618-2650
    ISSN 0016-1152 ; 0372-7920
    DOI 10.1007/s00216-017-0635-9
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: High-Speed, Integrated Ablation Cell and Dual Concentric Injector Plasma Torch for Laser Ablation-Inductively Coupled Plasma Mass Spectrometry.

    Douglas, David N / Managh, Amy J / Reid, Helen J / Sharp, Barry L

    Analytical chemistry

    2015  Band 87, Heft 22, Seite(n) 11285–11294

    Abstract: In recent years, laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) has gained increasing importance for biological analysis, where ultratrace imaging at micrometer resolution is required. However, while undoubtedly a valuable ... ...

    Abstract In recent years, laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) has gained increasing importance for biological analysis, where ultratrace imaging at micrometer resolution is required. However, while undoubtedly a valuable research tool, the washout times and sensitivity of current technology have restricted its routine and clinical application. Long periods between sampling points are required to maintain adequate spatial resolution. Additionally, temporal signal dispersion reduces the signal-to-noise ratio, which is a particular concern when analyzing discrete samples, such as individual particles or cells. This paper describes a novel, two-volume laser ablation cell and integrated ICP torch designed to minimize aerosol dispersion for fast, efficient sample transport. The holistic design utilizes a short, continuous diameter fused silica conduit, which extends from the point of ablation, through the ICP torch, and into the base of the plasma. This arrangement removes the requirement for a dispersive component for argon addition, and helps to keep the sample on axis with the ICP cone orifice. Hence, deposition of sample on the cones is theoretically reduced with a resulting improvement in the absolute sensitivity (counts per unit mole). The system described here achieved washouts of 1.5, 3.2, and 4.9 ms for NIST 612 glass, at full width half, 10%, and 1% maximum, respectively, with an 8-14-fold improvement in absolute sensitivity, compared to a single volume ablation cell. To illustrate the benefits of this performance, the system was applied to a contemporary bioanalytical challenge, specifically the analysis of individual biological cells, demonstrating similar improvements in performance.
    Mesh-Begriff(e) Gadolinium/chemistry ; Humans ; Lasers ; Mass Spectrometry/instrumentation ; Mass Spectrometry/methods ; T-Lymphocytes, Regulatory/cytology
    Chemische Substanzen Gadolinium (AU0V1LM3JT)
    Sprache Englisch
    Erscheinungsdatum 2015-11-17
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.5b02466
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel: High-Speed, Integrated Ablation Cell and Dual Concentric Injector Plasma Torch for Laser Ablation-Inductively Coupled Plasma Mass Spectrometry

    Douglas, David N / Managh Amy J / Reid Helen J / Sharp Barry L

    Analytical chemistry. 2015 Nov. 17, v. 87, no. 22

    2015  

    Abstract: In recent years, laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) has gained increasing importance for biological analysis, where ultratrace imaging at micrometer resolution is required. However, while undoubtedly a valuable ... ...

    Abstract In recent years, laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) has gained increasing importance for biological analysis, where ultratrace imaging at micrometer resolution is required. However, while undoubtedly a valuable research tool, the washout times and sensitivity of current technology have restricted its routine and clinical application. Long periods between sampling points are required to maintain adequate spatial resolution. Additionally, temporal signal dispersion reduces the signal-to-noise ratio, which is a particular concern when analyzing discrete samples, such as individual particles or cells. This paper describes a novel, two-volume laser ablation cell and integrated ICP torch designed to minimize aerosol dispersion for fast, efficient sample transport. The holistic design utilizes a short, continuous diameter fused silica conduit, which extends from the point of ablation, through the ICP torch, and into the base of the plasma. This arrangement removes the requirement for a dispersive component for argon addition, and helps to keep the sample on axis with the ICP cone orifice. Hence, deposition of sample on the cones is theoretically reduced with a resulting improvement in the absolute sensitivity (counts per unit mole). The system described here achieved washouts of 1.5, 3.2, and 4.9 ms for NIST 612 glass, at full width half, 10%, and 1% maximum, respectively, with an 8–14-fold improvement in absolute sensitivity, compared to a single volume ablation cell. To illustrate the benefits of this performance, the system was applied to a contemporary bioanalytical challenge, specifically the analysis of individual biological cells, demonstrating similar improvements in performance.
    Schlagwörter aerosols ; argon (noble gases) ; glass ; image analysis ; mass spectrometry ; silica
    Sprache Englisch
    Erscheinungsverlauf 2015-1117
    Umfang p. 11285-11294.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021%2Facs.analchem.5b02466
    Datenquelle NAL Katalog (AGRICOLA)

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