Qualitative tests hydrogen sulfide

In most of the systems of qualitative analysis for the metal ions use is made of the procedure of sulfide precipitation. This involves the treatment of the solution with hydrogen sulfide, leading to the precipitation of about fifteen of the twenty-three or twenty-four metals that are commonly tested for. 

This test method covers the determination of the hydrogen sulfide and sulfur dioxide content (qualitative) of industrial aromatic hydrocarbons. 

This test method is a qualitative one for hydrogen sulfide (H2S) and sulfur dioxide (SO2). It should not be considered quantitative. It gives an indication of the presence of H2S or SO2, or both, which may cause objectionable odors or be corrosive to certain materials of construction. 

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