/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: robsonafonso79 https://cdn.slidesharecdn.com/profile-photo-robsonafonso79-48x48.jpg?cb=1523404745 Professor da Universidade Federal de Ouro Preto Especialisata em espectrometria de massas