Combustion-Spectrophotometric Method for Determination of Trace Quantities of Sulfur in Metals.

Burke, Keith E.; Davis, C. M.

doi:10.1021/ac60193a027

Cited by 15 publications

(6 citation statements)

References 29 publications

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“…Interferences associated with the present methods for the determination of sulfur dioxide have been reviewed by Thomas (5) and by Mueller et al (6). Several investigators have suggested modifications to eliminate interferences or increase reliability (7)(8)(9)(10)(11)(12). It was decided that an investigation of important parameters and of possible modifications would be of value.…”

mentioning

confidence: 99%

Spectrophotometric determination of atmospheric sulfur dioxide

Scaringelli¹,

Saltzman²,

Frey³

1967

Anal. Chem.

156

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Two improved pararosaniline methods developed for the spectrophotometric determination of sulfur dioxide in ambient air yield greater sensitivity, greater reproducibility, and adherence to Beer's law throughout a greater working range than the West and Gaeke method. These improvements resulted from optimization of the important parameters. The pararosaniline dye was specially purified and standardized to reduce variability problems. Phosphoric acid was (1) A.

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mentioning

confidence: 99%

Spectrophotometric determination of atmospheric sulfur dioxide

Scaringelli¹,

Saltzman²,

Frey³

1967

Anal. Chem.

156

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“…As mentioned in the introduction, Burke and Davis (2) in applying their procedure devised for the determination of sulfur in nickel and steel to the only copper-base metal obtained a result twice as high as given by the NBS. The presumable reason for obtaining a high result, suggested from our own experience, is that the combustion was carried out at a temperature approximately 400°C.…”

Section: Factors Affectingmentioning

confidence: 93%

Application of the Pararosaniline-Formaldehyde Spectrophotometric Method to the Determination of Sulfur in Blister and Refined Copper.

Barabas¹,

Kaminski²

1963

Anal. Chem.

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b The sensitive pararosaniline-formaldehyde chromogenic system has been applied to the determination of sulfur as sulfur dioxide in blister and refined copper. Several factors affecting the combustion, furnace temperature, use of fluxes, and combustion accelerators and retarders have been investigated. Conditions established are quite different from those recommended by other researchers in the analysis of high melting metals and alloys. The effect of temperature on color development of the sulfonic acid derivative of prosaniline and its stability has been established for the first time. Interferences from common impurities present in copper such as selenium, tellurium, arsenic, and antimony in concentrations up to 10 times that of sulfur have been investigated. A procedure has been devised allowing accurate determination of sulfur in copper in the range 2 to 500 p.p.m. The standard deviation at the 10-p.p.m. level is less than i 1, and at the 100-p.p.m. level less than * 4.

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“…2,3 A number of investigations have been reported that have aimed to minimize the interference due to impurities in the dye, ozone, oxides of nitrogen and transition metal ions. [4][5][6][7][8][9][10] The addition of the dye for colour development during the chemical analysis stage plays an important role. Usually, pararosaniline hydrochloride (PRA) dye is used in this method.…”

Section: Introductionmentioning

confidence: 99%

Use of rosaniline hydrochloride dye for atmospheric SO2 determination and method sensitivity analysis

Goyal

2001

J. Environ. Monitor.

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The para-rosaniline hydrochloride (PRA) dye-based manual method (P. W. West and G. C. Gaeke, Anal. Chem., 1956, 28, 1816) is widely used for sulfur dioxide measurements in the atmosphere, particularly in developing countries. In this investigation, the properties of a less costly, rosaniline hydrochloride (RA) dye were found to be similar to those of the PRA dye, and showed no significant variation in atmospheric SO2 determination. Furthermore, the sensitivity of various operational parameters to slight changes similar to those encountered during normal use in the different stages of monitoring, namely sample collection and chemical analysis, was evaluated using both dyes, and the deviations in the method response from the reference parameter value were quantified. The method was found to be highly sensitive to the amount of reagent (HCHO and dye) addition in SO2 exposed samples for colorimetric determination. Therefore, utmost care is required in the preparation of reagents and in the addition of the appropriate amount of reagents during chemical analysis in order to obtain the actual concentrations of SO2 in the atmosphere.

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Combustion-Spectrophotometric Method for Determination of Trace Quantities of Sulfur in Metals.

Cited by 15 publications

References 29 publications

Spectrophotometric determination of atmospheric sulfur dioxide

Spectrophotometric determination of atmospheric sulfur dioxide

Application of the Pararosaniline-Formaldehyde Spectrophotometric Method to the Determination of Sulfur in Blister and Refined Copper.

Use of rosaniline hydrochloride dye for atmospheric SO2 determination and method sensitivity analysis

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