Non-volatile marine and non-refractory continental sources of particle-phase amine during the North Atlantic Aerosols and Marine Ecosystems Study (NAAMES)

• Published in: Atmospheric Chemistry and Physics
• Main Authors: V. Z. Berta, L. M. Russell, D. J. Price, C.-L. Chen, A. K. Y. Lee, P. K. Quinn, T. S. Bates, T. G. Bell, M. J. Behrenfeld
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2023
• Subjects: Physics; QC1-999; Chemistry; QD1-999; North Atlantic
• Online Access: https://doi.org/10.5194/acp-23-2765-2023; https://doaj.org/article/219af75d0dfc43eea7fab270021d1285

Amines were measured by aerosol mass spectrometry (AMS) and Fourier transform infrared (FTIR) spectroscopy during the North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) cruises. Both AMS non-refractory (NR) amine ion fragments comprising the AMS C x H y N z family and FTIR non-volatile (NV) primary (C–NH 2 ) amine groups typically had greater concentrations in continental air masses than in marine air masses. Secondary continental sources of AMS NR amine fragments were identified by consistent correlations with AMS NR nitrate, AMS NR f 44 (the contribution of AMS ion signal at <math xmlns="http://www.w3.org/1998/Math/MathML" id="M6" display="inline" overflow="scroll" dspmath="mathml"><mrow><mi>m</mi><mo>/</mo><mi>z</mi></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="23pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="ab5624c790cbaa3f5350f350107808ad"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-23-2765-2023-ie00001.svg" width="23pt" height="14pt" src="acp-23-2765-2023-ie00001.png"/></svg:svg> 44 (CO <math xmlns="http://www.w3.org/1998/Math/MathML" id="M7" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">2</mn><mo>+</mo></msubsup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="fb80c4c6e16db439d7ccc2ddca26875a"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="acp-23-2765-2023-ie00002.svg" width="8pt" height="15pt" src="acp-23-2765-2023-ie00002.png"/></svg:svg> ) to the total AMS NR organic mass (OM) signal), ion chromatography (IC) non-sea-salt potassium (nssK + ), and radon for most air masses. FTIR NV amine group mass concentrations for particles with diameters <1 µm showed large contributions from a primary marine source that ...