EQUIPMENT FOR MICRO- AND ULTRAMICRO-SULPHUR ANALYSIS OF SUBSTANCES CONTAINING SULPHUR, MAINLY OF ORGANIC SUBSTANCES AND SUBSTANCE SAMPLES OF ORGANIC ORIGIN

摘要

Sulphur content of organic samples is determined quantitatively by converting the sulphur ions to sulphuric acid. The sample is ignited at 900-1000 deg.C and is then oxidized with a halogen. Excess halogen is removed by elution with oxygen gas and the resulting sulphuric acid is determined quantitatively after washing with a solvent. The equipment consists of a sample holder connected to an oxygen supply and a burning unit,, leading via a distilled water supply to an absorption a pump and a detection cell.