title: Interference of therephthalic groups present in Dacron with spectrophotometric azide determination.
abstract: The determination of azide groups introduced into Dacron cannot be established by the method based on the Fe3+ - N3- complex because the therephthalic groups present in the polymer also react with Fe3+ to form a product with absorbance at 458 nm.
authors.affiliation: Departamento de Bioquímica, Universidade Federal de Pernambuco, Recife, Brasil.
authors.forename: E A
authors.initials: EA
authors.lastname: Oliveira
authors.forename: L B
authors.initials: LB
authors.lastname: Carvalho Júnior
mesh_terms: D000042:Absorption; D001386:Azides / Q000032:analysis*; D007501:Iron / Q000378:metabolism; D011093:Polyethylene Terephthalates / Q000138:chemical synthesis*
chemical_list: D001386:Azides; D011093:Polyethylene Terephthalates; D007501:Iron