Determination of total sulfur by ion chromatography following peroxide oxidation in spent caustic from the chemical cleaning of coal

Journal Article · Sat Feb 01 00:00:00 EST 1986 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00293a012· OSTI ID:6322740

Chriswell, C D; Mroch, D R; Markuszewski, R

Total sulfur in samples of spent caustic arising from the chemical cleaning of coal has been determined by ion chromatography after oxidation of all sulfur species to sulfate. Oxidation with hydrogen peroxide first under basic conditions and subsequently under strongly acidic conditions was required for quantitative conversion of all sulfur species to sulfate. The effects of pH, sample size, and time of oxidation have been studied. The subsequent determination of sulfate by ion chromatography was straightforward, using well-established procedures. The results for total sulfur were reproducible, and the accuracy, based on total sulfur balance, was good. Previously low material balances for total sulfur have been corrected by this modified procedure to acceptable values. 9 references, 3 tables.

• Research Organization: Ames Lab., IA
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6322740
• Journal Information: Anal. Chem.; (United States), Vol. 58:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COAL
CLEANING
SODIUM HYDROXIDES
QUANTITATIVE CHEMICAL ANALYSIS
SULFUR
ION EXCHANGE CHROMATOGRAPHY
OXIDATION
COAL PREPARATION
EXPERIMENTAL DATA
HYDROGEN PEROXIDE
PH VALUE
SULFATES
ALKALI METAL COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DATA
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
MATERIALS
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PEROXIDES
SEPARATION PROCESSES
SODIUM COMPOUNDS
SULFUR COMPOUNDS
010800* - Coal
Lignite
& Peat- Waste Management
400102 - Chemical & Spectral Procedures