By Arthur C. Stern (Eds.)
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Extra info for Air Pollution and its Effects. Air Pollution
Coagulation IV. Physical and Chemical Properties of Particles in the Air A. Size Distribution—General B. Air Ions C. Aitken Nuclei D. 1 μ,πι Radius V. 246, dimensionless [Eq. (16)] Cunningham correction factor, di mensionless Constant, dimensionless [Eq. 6 X 10 19 coulomb Functional notation, e . g . / ^ ) , / ^ ) , etc. 23 X 104 cm3— mm Hg (°K)_1 (gm-mole) _1 Radius of ion collector outer cyl inder, cm I. CORN t Τ u v V w y' z β y Δ^ λ μ π p p' pw σ9 W Time, sec Absolute temperature, °K Particle terminal settling velocity, cm/sec Voltage differential between ion collector condenser plates, volts Total particle volume associated with particles less than size r, cm 3 Particle weight, gm η/Δ (In r).
These chemicals are also among the odorous gaseous by-products of the kraft pulp industry. In the case of hydrogen sulfide and foulsmelling organic sulfur compounds, odor is sufficient index of excessive concentration, and, for the most part, no quantitative analytical evidence is sought. IV. Nitrogen-Containing Gases A. NITROGEN OXIDES T h e most significant gaseous pollutants in this group are nitric oxide and nitrogen dioxide (Figs. 7 and 8 and Table V). T h e presence of these two gases in air has been known for a good many years, although early reports often lumped them together.
48, 1484 (1956). 22. F. E. Littman, H. W. Ford, and N. Endow, Ind. Eng. Chem. 48, 1492 (1956). 23. M. Shepherd, S. M. Rock, R. Howard, and J. Stormes, Anal. Chem. 23, 1431 (1951). 24. A. P. Altshuller, G. C. Ortman, B. E. Saltzman, and R. E. Neligan, / . Air Pollution Control Assoc. 16, 87, (1966). 25. Los Angeles County Air Pollution Control District, Quart. Contaminant Rept. (1964). 26. T. E. Kreichelt and E. W. " p. S. Dept. of Health, Education, and Welfare, 1964. 27. "Motor Vehicles, Air Pollution and Health," House Doc.