Bibliographic Citation
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Title | Pararosaniline colorimetric determination of sulfur dioxide stabilized with ethanedial |
Creator/Author | Irgum, K. |
Publication Date | 1985 Jun 01 |
OSTI Identifier | OSTI ID: 5104710 |
Other Number(s) | CODEN: ANCHA |
Resource Type | Journal Article |
Resource Relation | Anal. Chem. ; Vol/Issue: 57:7 |
Research Org | Univ. of Umea, Sweden |
Subject | 400104 -- Spectral Procedures-- (-1987) ;570000 -- Health & Safety ;500200 -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989); AIR-- QUANTITATIVE CHEMICAL ANALYSIS;SULFUR DIOXIDE-- ABSORPTION SPECTROSCOPY;SULFUR DIOXIDE-- ALKALINE HYDROLYSIS; ADSORPTION;ANILINE;COLOR;EXPERIMENTAL DATA;FORMALDEHYDE;GLYOXAL;OCCUPATIONAL SAFETY;PH VALUE;SODIUM HYDROXIDES;WORKING CONDITIONS |
Related Subject | ALDEHYDES;ALKALI METAL COMPOUNDS;AMINES;AROMATICS;CHALCOGENIDES;CHEMICAL ANALYSIS;CHEMICAL REACTIONS;DATA;DECOMPOSITION;FLUIDS;GASES;HYDROGEN COMPOUNDS;HYDROLYSIS;HYDROXIDES;INFORMATION;LYSIS;NUMERICAL DATA;OPTICAL PROPERTIES;ORGANIC COMPOUNDS;ORGANOLEPTIC PROPERTIES;OXIDES;OXYGEN COMPOUNDS;PHYSICAL PROPERTIES;SAFETY;SODIUM COMPOUNDS;SOLVOLYSIS;SORPTION;SPECTROSCOPY;SULFUR COMPOUNDS;SULFUR OXIDES |
Description/Abstract | A hydroxide-consuming intra-Cannizzaro reaction of ethanedial desorbed from the solid sorbent occurs during the hydrolysis step preceding the color reaction.^A higher initial OH-concentration is therefore needed in the hydrolysis, as compared to methods without ethanedial in the sample.^Hydrolysis time should be kept between 10 s and 5 min for maximum sensitivity.^Optimum pH and formaldehyde concentration during color development were 1.02 and 5 mM, respectively.^The alkaline formaldehyde solution containing 0.5 M NaOH and 20 mM formaldehyde was stable for 1 day at room temperature.^9 references, 4 figures, 1 table. |
Country of Publication | United States |
Language | English |
Format | Pages: 1335-1338 |
System Entry Date | 2001 May 13 |
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