Volatile contributions to aviation nvPM: a mass spectrometric analysis of nvPM emissions Z. Yu and R.C. Miake-Lye Meteorologische Zeitschrift (2024) Meterol. Z (Contrib. Atm. Sci.) Publication Date: February 5, 2024 (Online) DOI: 10.1127/metz/2024/1185   © Author(s) 2024. OPEN ACCESS Abstract.  Certification standards for non-volatile particulate matter (nvPM) emissions from aircraft engines