The Analysis of Airborne Sulfate

Role of Microorganisms in the Atmospheric Sulfur Cycle

“…Considerable doubt now exists, however, concerning the reliability of most of the published data concerning the forms and amounts of sulfur in air (see Junge, 1972;Kellogg et al, 1972;Adams, 1976;Tanner and Newman, 1976;Urone, 1976), and Adams (1976) recently concluded that most of the methods for determination of sulfur compounds in air "must be considered in a state of evolution" and that "information on the accuracy, precision, and reliability of these methods is very limited." The methods that have been used for H2S analysis of air are particularly suspect (see Kellogg et aI., 1972;Urone, 1976), and most of the published information concerning the H2S content of air is probably unreliable.…”

Use of benzaldehyde as a selective solvent for sulfuric acid: interferences by sulfate and sulfite salts

“…These techniques, however, have not been proved to be selective on actual samples. The various techniques for total H9SO4 characterization of particulate samples have been discussed (16,17). In particular, the disadvantages of a simple acid-base titration in determining the free sulfur acid in aqueous extractions have been enumerated (18,19).…”

Character and transformation of pollutants from major fossil fuel energy sources

“…Also important are the cations (e.g., NH:, ca 2 +, Fe 3 -incorporated into the material as neutralization proceeds. Analytical procedures are being developed and observat1ons made (Tanner and Newman 1976;Askne and Brasset 1972, Brasset 1976) to characterize the composition and particle size of "sulfates". The sulfate salts produced as end products would appear to be relatively benign compared to the concentrated acid from which they are derived.…”