Tentative method of test for sulfur oxides in flue gases (barium chloranilate-controlled condensation method)

Journal Article · Wed Jan 01 04:00:00 EST 1975 · Annu. Book ASTM Stand.; (United States)

OSTI ID:7267375

A method is described for the determination of 26 to 7950 mg/m/sup 3/ or 10 to 3000 ppM of SO/sub 2/ and 33 to 990 mg/m/sup 3/ or 10 to 300 ppM of SO/sub 3/ in flue gases. The SO/sub 3/ is condensed as H/sub 2/SO/sub 4/ by controlled cooling of the flue gas, and the H/sub 2/SO/sub 4/ aerosol is collected on a filter that is maintained above the water dew point. SO/sub 2/ is collected in midget impingers in series with SO/sub 3/ collectors and oxidized to H/sub 2/SO/sub 4/ by aqueous 3 percent H/sub 2/O/sub 2/ absorbing solution. The sulfate concentration of each solution is determined separately by reaction with barium chloroanilate in a pH-controlled, 50 percent alcohol solution to yield the highly colored acid chloroanilate. The concentration of the colored species is determined spectrophotometrically at 530 nm. Several cationic and anionic interferences are listed. The precision of the results is +-2.6 percent for SO/sub 2/ at 1500 ppM and +-5 percent for SO/sub 3/ at 10 ppM. (BLM)

• OSTI ID: 7267375
• Journal Information: Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 26; ISSN ASTSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CHALCOGENIDES
CHEMICAL ANALYSIS
FLUE GAS
GASEOUS WASTES
OXIDES
OXYGEN COMPOUNDS
SPECTROPHOTOMETRY
STANDARDS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFUR TRIOXIDE
WASTES