ASSAY OF ELEMENTAL SULFUR IN SOIL

Abstract

Elemental sulfur is extracted from soil with carbon disulfide and assayed either by direct spectrophotometry at 382 nm, a method suitable for soils with an elemental sulfur content of 1 mg/g or higher, or by evaporating the carbon disulfide and redissolving the sulfur in petroleum ether for assay by a sensitive colorimetric method in which the sulfur reacts with cyanide to form thiocyanate which is assayed colorimetrically with ferric chloride. Elemental sulfur is extracted from soil with carbon disulfide and assayed either by direct spectrophotometry at 382 nm, a method suitable for soils with an elemental sulfur content of 1 mg/g or higher, or by evaporating the carbon disulfide and redissolving the sulfur in petroleum ether for assay by a sensitive colorimetric method in which the sulfur reacts with cyanide to form thiocyanate which is assayed colorimetrically with ferric chloride. © Williams & Wilkins 1973. All Rights Reserved.