Rainwater, Water -- Analysis
The photometric pararosaniline (pRA) method for determination of S(IV) has been adapted to flow injection sample processing (FIA). Prominent features of the method include a limit of detection of 0.010 ppm of dissolved sulfur dioxide and a sampling rate of 20 per hour. The concentration range investigated was 0.010 to 0.200 ppm SO2. Sequential samples were collected from two rainstorms and SO2 concentrations were measured for 19 samples. The suppression of interference by Cr(III), Mn(II), and Fe(III) using 1,2-cyclohexylenedinitrilotetraacetic acid (CDTA) and ethylenediaminetetraacetic acid (EDTA) was investigated. A comparison of the adapted FIA method and its parent manual method has shown the FIA method to have the advantages of increased sample throughput, decreased reagent consumption, and increased precision.
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Madsen, Brooks C.
Master of Science (M.S.)
College of Arts and Sciences
Length of Campus-only Access
Masters Thesis (Open Access)
Hedgecock, Frank A., "Flow Injection and Photometric Determination of S(IV) in Rainwater with Pararosaniline" (1986). Retrospective Theses and Dissertations. 4914.