Sulfides determination

EPA. 1976. Effect of hydrogen sulfide on fish and invertebrates, Part II—Hydrogen sulfide determination and relationship between pH and sulfide toxicity. Report to the U.S. Environmental Protection Agency, Environmental Research Lab, Duluth, MN, by Broderius SJ, Smith LL Jr., University of Minnesota, Department of Entomology, Fisheries, and Wildlife, St. Paul, MN. 

M. Colon, M. Iglesias and M. Hidalgo, Development of a new method for sulfide determination by vapor generator-inductively coupled plasma-mass spectrometry, Spectrochim. Acta, Part B, 62, 2007, 470 475. 

The intensity of color developed is proportional to the concentration of sulfide in the sample. Color comparison may be done visually with methylene blue standard (sulfide equivalent). Alternatively, a spectrophotometer or a filter photometer may be used and the concentration of sulfide determined from a standard calibration curve. The color is measured at a wavelength maximum of 625 mil. 

The method of sulfide determination is based on what is commonly known as Lauth s reaction, and is adapted from the original method of Fisher (42). It involves a specific use of S in the synthesis of methylene blue from N,N-dimethylphenylenediamine (Fogo and Popowsky (43)). Cysteine, oxidized and reduced glutathione, insulin, and bovine serum albumin do not react in this test, thus indicating its specificity for sulfide (Lovenberg, Buchanan, and Rabinowitz (63)). 

The burner heads used in such cool flame emission studies are often simply quartz tubes. Figure 12 shows the burner system used by Arowolo and Cresser27 for automated gas-phase sulfide determination, for example. Other species determined by cool flame emission techniques include chloride, bromide, and iodide, which give intense emission in the presence of indium.29 The main application of cool flame emission techniques in environmental analysis is in speciation studies, for example for the separate determination of sulfite and sulfide, or as element-selective detectors in gas chromatography. 

Mojzsis, S.J., Coath, C.D., Greenwood, J.P., McKeegan, K.D., and Harrison, T.M., 2003. Mass-independent isotope effects in Archaean (2.5 to 3.8 Ga) sedimentary sulfides determined by ion microprobe anlysis. Geochim. Cosmochim. Acta, 67, 1635-58. 

USE Dyeing and printing cottons weighting silks manuf lead salts, chrome-yellow also for various analytical procedures, e.g. detection of sulfide determination of CrOj, MoOj... 

D. J. Leggett, N. H. Chen, and D. S. Mahadevappa, Flow Injection Method for Sulfide Determination by the Methylene Blue Method. Anal. Chim. Acta, 128 (1981) 163. 

This reaction will allow the solution of less than 1 pg/liter of iron assuming that 82 is the only sulfide species. Waters of this type have low iron contents and low sulfate levels, and they often contain traces of hydrogen sulfide. The analysis for this type of water shown in Table 7-6 shows only slightly more iron than predicted. Unfortunately, no hydrogen sulfide determination was made. 

Fiedler, H. D., R. Rubio, G. Rauret 1. Casals, 1999. Acid volatile sulfide determination in sediment using elemental analyzer with thermal conductivity detector. Talanta 48 403-407. 

Quenching methods have been used to analyze inorganic anions. Thus, halide ions have been analyzed using indicator fluorescence quenching, with iodide being the most efficient quencher and chloride the least effective. In the same way, electrophilic bromination of fluorescein to yield the low fluorescent 1,3,6,8-tetrabromofluorescein has been used for bromine determination, and a displacement reaction using a nonfluorescent Hg metal chelate has been described for sulfide determination. 

Microscopic purity concerning inclusions of oxides and sulfides determined according to Table la.5. 

L. Ferrer, G. de Armas, M. Miro, J.M. Estela, V. Cerda, Flow-through optical fiber sensor for automatic sulfide determination in waters by multisyringe flow injection analysis using solid-phase reflectometry, Analyst 130 (2005) 644-651. 

ALLAM A,I., PITTS G. and HOLLIS J.P. 1972. Sulfide determination in submerged soils v/ith an ion-selective electrode. Soil Science, 114,... 

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