Technical note: Intercomparison study of the elemental carbon radiocarbon analysis methods using synthetic known samples

Abstract 14 C) depends on the method of EC isolation. The lack of aerosol EC reference materials with “true” 14 C values makes it impossible to evaluate the accuracy of various methods for the analysis of 14 C-EC in aerosols. In this study, EC isolation methods were evaluated by using samples of mixed biomass burning, vehicle exhaust, and coal combustion. The results show that 14 C-EC was not only related to the isolation method but also to the types and proportions of biomass sources in the sample. The hydropyrolysis (Hypy) method, which can be used to isolate a highly stable portion of ECHypy and avoid charring, is a more effective and stable approach for the matrix-independent 14 C quantification of EC in aerosols. The 13 C-ECHypy and non-fossil ECHypy values of Standard Reference Material (SRM) 1649b were - 24.9  ‰ and 11 %, respectively.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Technical note: Intercomparison study of the elemental carbon radiocarbon analysis methods using synthetic known samples ; volume:23 ; number:13 ; year:2023 ; pages:7495-7502 ; extent:8 ; Atmospheric chemistry and physics ; 23, Heft 13 (2023), 7495-7502 (gesamt 8)

Beteiligte, Orts- und Zeitangaben

• Urheber: Zhang, Xiangyun ; Li, Jun ; Zhu, Sanyuan ; Liu, Junwen ; Ding, Ping ; Gao, Shutao ; Tian, Chongguo ; Chen, Yingjun ; Peng, Ping'an ; Zhang, Gan

Weitere Informationen

• DOI: 10.5194/acp-23-7495-2023
• URN: urn:nbn:de:101:1-2023071304221734146748
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 14.08.2025, 10:44 MESZ