The color transition for the titration of SO2 from emissions in the stack using thorine, methylthymol blue, metalphtaleine and thymolphtalein complexone as indicators is studied. Use of a new screened indicator thorine-carmin indigo (6.25 to 10.0) (W/W) is found to be the best procedure for the titration of sulphate. Every chromatic transition is obtained and classified.
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Code of Federal Regulations: 1978, Title 40. App. A. Method 8. Environmental Protection Agency.
Kolthoff, I. M., Sandell, E. B., Meehan, E. J., and Bruckenstein, S.: 1979, ‘Anal-Quimico Cuantitativo’ NigerBuenos Aires.
Wyszecki, G. and Stiles, W. S.: 1967‘Color Science: Concepts and Methods Quantitative Data and Formulas. Wiley, New York.
Reilley, C., Flaschka, H., Laurent, S., and Laurent B.: 1960, Anal Chem. 32, 1218.
Cacho, J., Lopez-Molinero, A., and Guitart, A.: 1987 Microchem. J. 36, 339.
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Nerin, C., Vizcaino, J.L., Cacho, J. et al. Determination of SO2 and S03 in emission an alternative to the thorine method. Water Air Soil Pollut 45, 97–103 (1989). https://doi.org/10.1007/BF00208580
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