title: Thiosulphate in the Wollak procedure-analysis and kinetics in acidic formaldehyde medium.
abstract: The Wollak procedure for the determination of the sum of dithionite and thiosulphate has been investigated. Analytical data and a kinetic study confirm that thiosulphate reacts with formaldehyde under acidic conditions. Both pH and CH(2)O concentration affect the results and satisfactory analysis can be performed only if the pH of the initial sample-formaldehyde mixture remains high enough.
authors.affiliation: Naval Surface Weapons Center, White Oak, Silver Spring, Maryland 20910, U.S.A.
authors.forename: W P
authors.initials: WP
authors.lastname: Kilroy