Chemistry: physical processes – Physical processes – Crystallization
Patent
1980-09-30
1982-05-18
Schor, Kenneth M.
Chemistry: physical processes
Physical processes
Crystallization
204 1T, 422 80, G01N 2746
Patent
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.
Hawn David D.
Reim Robert E.
Schor Kenneth M.
The Dow Chemical Company
LandOfFree
Reductive pyrolysis method for determining trace sulfur does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reductive pyrolysis method for determining trace sulfur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reductive pyrolysis method for determining trace sulfur will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-484999