Portrayal of organic aerosol sources in Western European and South American locations using 'ANTPOT. 1 H' NMR spectroscopy - Lopes, Sonia P; Paula, Andreia S; Matos, João T. V; Pereira, Guilherme Martins; Vasconcellos, Pérola de Castro; Gioda, Adriana; Carreira, Renato; Duarte, Regina M. B. O; Silva, Artur M. S; Duarte, Armando C (EuCheMS International Conference on Chemistry and the Environmental (ICCE), 2015)