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- W2078149737 abstract "Abstract A specific technique for the collection and measurement of atmospheric sulfur dioxide is described in detail. Sampling is performed by aspiring polluted air through a zinc-acetate-impregnated filter. The polluted zinc acetate is extracted from the filter with a 1.0M zinc-acetate solution. The zinc sulfite formed in the solution resulting from the atmospheric SO2 sampling is later measured colorimetrically as a red complex which is developed using a dye solution containing pyridine and sodium nitroprusside. The study of the efficiency of the technique using different types of filters indicates that at a sampling rate of 11/min the measuring range of a fiberglass filter is from 0.003 to 0.2 ppm when 1.0 m3 of polluted air is sampled. This new technique presents all the advantages of the West and Gaeke method as well as most of those of the dry collectors. Furthermore, it can also be used for the atmospheric sampling and measurement of hydrogen sulfide without interfering with the sulfur dioxide measurement. All these advantages combined with the simplicity of the technique render it particularly attractive when a given area has to be blanketed with samplers." @default.
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- W2078149737 date "1973-05-01" @default.
- W2078149737 modified "2023-09-25" @default.
- W2078149737 title "Collection of Atmospheric Sulfur Dioxide on Impregnated Fiberglass Filters and Colorimetric Measurement" @default.
- W2078149737 cites W1511375185 @default.
- W2078149737 cites W1969280046 @default.
- W2078149737 doi "https://doi.org/10.1080/03067317308076399" @default.
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