Determination of gaseous hydrogen sulfide by cathodic stripping voltammetry after preconcentration on a silver metalized porous membrane electrode

Journal Article · Sun Jan 01 00:00:00 EST 1984 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00272a004· OSTI ID:5996663

Opekar, F; Bruckenstein, S

Gaseous H/sub 2/S is accumulated on the surface of a porous silver membrane electrode at constant potential and directly determined by cathodic stripping voltammetry. The sensitivity of the method, expressed by the slope of the regression line for the dependence of the stipping peak current on the amount of H/sub 2/S in the gas sample, is 357 ..mu..g of H/sub 2/S/..mu..A. The reproducibility of the determination expressed in terms of the relative standard deviation is 3.2%. Phenomena observed during cathodic polarization of the silver porous membrane electrode, either clean or covered with deposited Ag/sub 2/S are briefly discussed and the resultant conditions for optimal analysis are given. 15 references, 4 figures.

• Research Organization: State Univ. of New York, Buffalo
• OSTI ID: 5996663
• Journal Information: Anal. Chem.; (United States), Vol. 56
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
HYDROGEN SULFIDES
VOLTAMETRY
CHEMICAL REACTION YIELD
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYSIS
EXPERIMENTAL DATA
INJECTION
MEMBRANES
NITROGEN
PERCHLORIC ACID
POROSITY
QUANTITATIVE CHEMICAL ANALYSIS
SENSITIVITY
SILVER
SODIUM SULFIDES
SORPTION
SURFACE COATING
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL ANALYSIS
DATA
DEPOSITION
ELEMENTS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
INTAKE
LYSIS
METALS
NONMETALS
NUMERICAL DATA
SODIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS
YIELDS
400102* - Chemical & Spectral Procedures
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)