Simultaneous determination of sulphate and sulphonate type anionic surfactants.
A method is described for the simultaneous determination of organic sulphates and sulphonates, based on hydrolysis of the sulphates in 3M hydrochloric acid. The total concentration of anionic surfactants is determined by the Methylene Blue method, then the sulphates are hydrolysed by boiling with 3M hydrochloric acid for 2 hr, and the sulphonates are determined by the Methylene Blue method. The concentration of the alkyl sulphates is obtained by difference. The large amounts of sodium chloride introduced during the procedure do not affect the Methylene Blue method.
Ströhl
G W
GW
Research Department, Imperial Chemical Industries, Modderfontein, Transvaal, USA.
Kurzak
D
D