Personal monitoring method for nitrogen dioxide and sulfur dioxide with solid sorbent sampling and ion chromatographic determintion
A personal monitoring method for SO/sub 2/ and NO/sub 2/ in the 1 to 10 ppM range, using triethanolamine (TEA) impregnated molecular sieve 13X as solid sorbent for sample collection was developed. Known concentration standards of SO/sub 2/ and NO/sub 2/ were generated by using liquid permeation tubes in a Kin-Tek three-channel gas calibration system. SO/sub 2/ and NO/sub 2/ were stripped from the sorbent with a standard eluant mixture (0.003 M NaHCO/sub 3//0.0024 M Na/sub 2/CO/sub 3/) and determined by ion chromatography as nitrite and/or nitrate and sulfate after oxidation of the sulfite with H/sub 2/O/sub 2/. Preparation and conditioning procedures for TEA-molecular sieve 13X, sample stability on the sorbent during storage, interferences of other species, effect of humidity on the recovery, and specific advantages of the proposed procedure over the existing methods are discussed.
- Research Organization:
- Monsanto Co., St. Louis, MO
- OSTI ID:
- 6041545
- Journal Information:
- Anal. Chem.; (United States), Vol. 53:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
NITROGEN DIOXIDE
CHROMATOGRAPHY
MONITORING
SULFUR DIOXIDE
ACID CARBONATES
ADSORPTION
AMINES
ELUTRIATION
HYDROGEN PEROXIDE
MOLECULAR SIEVES
NITRITES
NITROGEN
OXIDATION
SAMPLING
SODIUM CARBONATES
SODIUM COMPOUNDS
SORPTIVE PROPERTIES
STABILITY
STORAGE
SULFITES
SULFUR
ADSORBENTS
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
SEPARATION PROCESSES
SORPTION
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
400102* - Chemical & Spectral Procedures
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)