Abstract
Abstract Determination of sulfur dioxide, sulfur trioxide, or sulfuric acid mist becomes difficult in the presence of other acid gases or where collected samples are highly colored or turbid. A method is described by which all oxides of sulfur are oxidized and precipitated as barium sulfate. The barium in the precipitate is determined by measuring the intensity of the L-alpha emission produced by x-ray excitation. The method is useful for about 0.05 to 10 micromoles of oxides of sulfur in the aliquot analyzed.
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