Direct extraction of sulfur dioxide from sulfates for isotopic analysis

Journal Article · Wed Apr 01 04:00:00 EST 1981 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00227a025· OSTI ID:6456294

Halas, S; Wolacewicz, W P

A convenient method of extraction of sulfur dioxide from natural sulfates (BaSO/sub 4/, SrSO/sub 4/, and CaSO/sub 4/) for sulfur isotopic analysis is described. A sulfate is reacted with NaPO/sub 3/ under vacuum at 850/sup 0/C; SO/sub 3/ thus obtained is then reduced to sulfur dioxide on copper heated to 750/sup 0/C. It has been experimentally shown that the reaction takes place with complete yield and provides very good reproducibility of measurements despite a remarkable variation in /sup 18/O content of analyzed sulfates. The long-term reproducibility of /sup 34/S//sup 32/S ratios is about 0.05 per mil.

• Research Organization: Marie Curie-Sklodowska Univ., Lublin, Poland
• OSTI ID: 6456294
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 53:4; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM SULFATES
CALCIUM COMPOUNDS
CALCIUM SULFATES
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER
ELEMENTS
EVEN-EVEN NUCLEI
EXTRACTION
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MEDIUM VACUUM
METALS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
REDUCTION
SEPARATION PROCESSES
SODIUM COMPOUNDS
SODIUM PHOSPHATES
STABLE ISOTOPES
STRONTIUM COMPOUNDS
STRONTIUM SULFATES
SULFATES
SULFUR 32
SULFUR 34
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR ISOTOPES
SULFUR OXIDES
SULFUR TRIOXIDE
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE