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- Off-line filter based AMS characterization of water soluble non-refractory sulfate, nitrate, ammonium, chloride, and organic mass (NR-PM1). 
- Off-line filter-based spectroscopic characterization of the water-soluble organic mass in term of chemical functional groups and specific markers by means of proton-Nuclear Magnetic Resonance spectroscopy (H-NMR).
- Source apportionment of organic aerosol by means of multivariate statistical techniques (namely Positive Matrix Factorization, PMF, and other factor analysis methods) applied on both AMS and NMR spectral datasets.

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		- contributions to the total OC, after multilinear regression, expressed in  &#x1d707;gC m-3 &amp; % (before and after splitting Marine OA in marine POA and SOA based on what reported in the paper)
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