Use of porous polypropylene capillaries for sampling of formaldehyde in air followed by derivatization and capillary electrophoresis with oscillometric detection - Rocha, Flávio R.; Silva, José A. Fracassi da; Gutz, Ivano Gebhardt Rolf; Lago, Claudimir Lucio do (Simpósio Química e Meio Ambiente - Estamos fazendo nossa parte?, 2002)