W. Mroczkowski et A. Cyganski, SPECTROPHOTOMETRIC DETERMINATION OF MICROGRAM AMOUNTS OF SULFUR .8. THERMO-SPECTROPHOTOMETRIC METHOD FOR TOTAL SULFUR DETERMINATION IN MINERAL-OILS, Chemia Analityczna, 40(4), 1995, pp. 641-647
A method for the determination of total sulfur in mineral oils has bee
n developed. The method involves combustion of an oil sample in a pipe
furnace in a stream of air at 1000 degrees C in the presence of CuO a
nd spectrophotometric determination of the formed sulfur dioxide by pa
rarosaniline method. The method can be used to determine from 2 to 50
mu g of sulfur in a 40 mg sample of oil. The linearity range of the me
thod is 2-50 mu g S.