title: p-nitroaniline as a colorimetric reagent for sulphur dioxide.
abstract: The merits of the nitroanilines as an alternative to p-rosaniline and fuchsine in the colorimetric determination of sulphur dioxide and sulphites have been investigated. p-Nitroaniline was found to be a stable, well-defined reagent, with which sulphur dioxide can be determined to a high level of precision, the sensitivity being of the same order of magnitude as for p-rosaniline.
authors.affiliation: Swedish Forest Products Research Laboratory and Central Laboratory of the Swedish Cellulose Industry, Stockholm 11728, Sweden.
authors.forename: P O
authors.initials: PO
authors.lastname: Bethge
authors.forename: M
authors.initials: M
authors.lastname: Carlson