Reductive pyrolysis method for determining trace sulfur

Chemistry: physical processes – Physical processes – Crystallization

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204 1T, 422 80, G01N 2746

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active

043302980

ABSTRACT:
Method for determining total organic sulfur using reductive pyrolysis and specific electrochemical detection of sulfide ion at a mercury electrode. The method is especially useful for the determination of sulfur in matrices containing halogen or nitrogen compounds. Under routine conditions, a detection limit of less than 50 parts per billion (ppb) can be achieved using differential pulse cathodic stripping voltammetry as the detection mode.

REFERENCES:
patent: 3304243 (1967-02-01), Capuano
patent: 3410763 (1968-11-01), Capuano
patent: 3493484 (1970-02-01), Berg et al.
patent: 3820958 (1974-06-01), Cheng et al.
patent: 4172705 (1979-10-01), Castro et al.
patent: 4227974 (1980-10-01), Peterson et al.
patent: 4238198 (1980-12-01), Swaim et al.
D. L. Noel--Sulfur Compounds in Kraft Pumping Liquor, May 1978--pp. 73-76.
Harry V. Drushel--Trace Sulfur Determination in Petroleum Fractions--1977--pp. 76-81.
B. Ya. Kaplan, T. N. Varavko and I. N. Vladimirskaya--Polarographic Determination of Sulfur by Combustion with Reversible Adsorption of Sulfur Dioxide and Its Reduction to Hydrogen Sulfide--1977--pp. 315-317.
J. J. Renard, G. Kubes, and H. I. Bolker--Polarographic Determination of Sulfur Compounds in Pulping Liquors--1975--pp. 13471352.
John A. Turner, Roger H. Abel, and Robert A. Osteryoung--Normal Pulse Polarographic Analysis Based on Mercury Anodization: Sulfide and Iodide--1975--pp. 1343-1347.
Kaplan, B. Ya; Sevastyanova, T. N.; Shiryaeva, O. A.--Application of Pulse Polarography for the Determination of Trace Amounts of Sulfur--1974--Abstract 32847v, vol. 81 (1974) p. 511.
D. R. Canterford and A. S. Buchanan--Polarographic Behaviour of Sulphide Ion--1973--pp. 193-203.
D. R. Canterford and A. S. Buchanan--Application of Differential Pulse Polarography to Anodic Electrode Processes Involving Mercury Compound Formation--1972--pp. 291-298.
Tamoo Miwa, Yukio Fujii and Atsushi Mizuike--Cathodic Stripping Voltammetry of Sulfide--1971--pp. 475-477.
Dautzenberg, Horst--Continuous Polarographic Detection of Small Amounts of Volatile Material From a Gaseous Mixture. Ger. (East) 73,667--1970.
L. D. Wallace and D. W. Kohlenberger; R. J. Joyce, R. T. Moore, M. E. Riddle, and J. A. McNulty--Comparison of Oxidative and Reductive Methods for the Microcoulometric Determinations of Sulfur in Hydrocarbons--1970--pp. 387-394.
Safwat W. Bishara--Indirect Polarographic Method for the Microdetermination of Sulfur in Organic Compounds--1969--pp. 211-217; Microchemical Journal 15, 211-217 (1970).
Strafelda, Frantisek; Hancil, Vladimir--Polarographic Analyzer for Hydrogen Sulfide in Hydrogen--1966--pp. 143-153.
E. M. Roizenblat, T. I. Fomicheva, and Kh. Z. Brainina--The Determination of Microquantities of Sulfates by the Method of Film Polarography with Accumulation--1966--pp. 799-801.

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