title: Versatile microanalytical system with porous polypropylene capillary membrane for calibration gas generation and trace gaseous pollutants sampling applied to the analysis of formaldehyde, formic acid, acetic acid and ammonia in outdoor air.
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-900 São Paulo, SP, Brazil.
authors.forename: Lúcia H G
authors.initials: LH
authors.lastname: Coelho
authors.forename: Wanessa R
authors.initials: WR
authors.lastname: Melchert
authors.forename: Flavio R
authors.initials: FR
authors.lastname: Rocha
authors.forename: Fábio R P
authors.initials: FR
authors.lastname: Rocha
authors.forename: Ivano G R
authors.initials: IG
authors.lastname: Gutz
mesh_terms: D019342:Acetic Acid / Q000032:analysis / Q000302:isolation & purification*; D000388:Air / Q000032:analysis*; D000393:Air Pollutants / Q000032:analysis / Q000302:isolation & purification*; D000641:Ammonia / Q000032:analysis / Q000302:isolation & purification*; D019075:Electrophoresis, Capillary / Q000379:methods; D005557:Formaldehyde / Q000032:analysis / Q000302:isolation & purification*; D005561:Formates / Q000032:analysis / Q000302:isolation & purification*; D005740:Gases / Q000032:analysis; D008567:Membranes, Artificial; D011126:Polypropylenes / Q000737:chemistry; D016062:Porosity; D012680:Sensitivity and Specificity
chemical_list: D000393:Air Pollutants; D005561:Formates; D005740:Gases; D008567:Membranes, Artificial; D011126:Polypropylenes; C030544:formic acid; D005557:Formaldehyde; D000641:Ammonia; D019342:Acetic Acid