Silver-110 microgram sulfate analysis for the short time resolution of ambient levels of sulfur aerosol
Journal Article
·
· Anal. Chem.; (United States)
Atmospheric particulate samples collected on glass fiber or quartz filters have been routinely analyzed for total sulfur at the milligram level with /sup 110/Ag tracer. The method has been refined to permit sulfate analyses of <10 ..mu..g SO/sub 4//sup 2 -/. Samples are reduced with a mixture of HI, H/sub 3/PO/sub 3/, and HCl, converting SO/sub 4//sup 2 -/ to H/sub 2/S, which is adsorbed as CdS. Metathesis of CdS with AgNO/sub 3/ containing tracer /sup 110/Ag is followed by collection of Ag/sub 2/S on a membrane filter and gamma counting in a NaI(Tl) well counter. Recoveries of approx. 97% with a std dev of +-7% were obtained with standard sulfate solutions, and recoveries were comparable in the presence of quartz or glass-fiber particulate filters. Comparisons were made between total and soluble particulate sulfate in ambient air samples collected at urban and rural locations, utilizing the /sup 110/Ag technique. The technique was also compared with a soluble sulfate turbidimetric method of analysis.
- Research Organization:
- Brookhaven National Lab., Upton, NY
- OSTI ID:
- 7283005
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 49:11; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400103* -- Radiometric & Radiochemical Procedures-- (-1987)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
DAYS LIVING RADIOISOTOPES
ELEMENTS
FLUIDS
GASES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RADIOISOTOPES
RADIOMETRIC ANALYSIS
SECONDS LIVING RADIOISOTOPES
SILVER 110
SILVER ISOTOPES
SULFATES
SULFUR
SULFUR COMPOUNDS
400103* -- Radiometric & Radiochemical Procedures-- (-1987)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
DAYS LIVING RADIOISOTOPES
ELEMENTS
FLUIDS
GASES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RADIOISOTOPES
RADIOMETRIC ANALYSIS
SECONDS LIVING RADIOISOTOPES
SILVER 110
SILVER ISOTOPES
SULFATES
SULFUR
SULFUR COMPOUNDS