Tracer Techniques in Sulfur Dioxide-Air Pollution Studies. Apparatus and Studies of Sulfur Dioxide Colorimetric and Conductometric Methods.

Abstract

Analytical tracer techniques for studying the role of sulfur dioxide in air pollution problems were developed. An apparatus was built which made it possible to measure directly microgram quantities of sulfur dioxide tagged with S36. The tagged sulfur dioxide

Static studies of sulfur dioxide reactions in air

“…Analysis of the sulfur dioxide and its reaction products was designed to account for the total amount of sulfur dioxide taken. The unreacted sulfur dioxide was measured colorimetrically, and a scintillation method was used to account for all of the sulfur dioxide taken (Urone, Evans, et al, 1965).…”

Air pollution

“…In an investigation with 35SC>2 as a tracer, significant loss of sampling efficiency below 10 pphm in both the conductometric and colorimetric pararosaniline methods was reported (281).…”

Colorimetric Determination of Sulfur Dioxide in Air Using a Droplet Collector of Malachite Green Solution

“…While there are several methods to quantify the atmospheric sulfur dioxide, the sampling process appears to be the main source of error when the analyte is present in small amounts. For example, it has been demonstrated that absorption solutions contained in bubbler could have widely differing collection efficiencies (5,6). There are several ways of reducing these effects, but the problem has not been solved.…”