Flow injection method for sulfide determination by the methylene blue method |
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| Authors: | DJ Leggett NH Chen DS Mahadevappa |
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| Institution: | Department of Chemistry, University of Houston, Central Campus, Houston, TX 77004 U.S.A. |
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| Abstract: | Flow injection determination of sodium sulfide and hydrogen sulfide in solution through the methylene blue spectrophotometric procedure is described. The carrier streams are N,N-dimethylaniline sulfate (5.4 mM, HCl solution) and iron(m) ammonium sulfate (14.2 mM, HCl solution) and are merged before injection of sulfide (in 0.01 M NaOH). The sampling rate is 210 per hour. The effect of reagent concentrations and interferents on the determination has been investigated. |
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