Increasing sensitivity of 3-methyl-2-benzothiazolone hydrazone test for analysis of aliphatic aldehydes in air
Journal Article
·
· Anal. Chem.; (United States)
A modification of the MBTH procedure is described in which the addition of sulfamic acid, in the oxidizing step of the reaction, gives a solution free of turbidity and capable of colorimetric analysis without dilution by acetone. A reduction in the volume of the oxidizing agent originally added in this step further contributes to the concentration of the color. Although a comparison of this procedure with that of Sawicki et al. shows a loss in molar absorbance, the sensitivity of the method is increased approximately sixfold. This increased sensitivity easily permits the analysis of aliphatic aldehydes in the parts-per-billion range in ambient air. 10 references, 1 figure, 1 table.
- Research Organization:
- Dept. of Health, Education, and Welfare, Cincinnati, OH
- OSTI ID:
- 5556027
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 36:3; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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