The Experts below are selected from a list of 6 Experts worldwide ranked by ideXlab platform

Víctor Cerdà - One of the best experts on this subject based on the ideXlab platform.

  • automatic kinetic determination of hg ii by Anodic Stripping Potentiometry with constant current oxidation
    Talanta, 1991
    Co-Authors: Andreu Cladera, J.m. Estela, Víctor Cerdà
    Abstract:

    A new kinetic method for the determination of Hg(II) is proposed. It is based on the kinetic evolution of the Anodic Stripping potentiometric curves yielded by a gold electrode previously coated with mercury upon passage of constant electrical currents. The method features a linear determination range between 40 and 800 ppb of Hg(II) and a relative standard deviation of 5% (n = 9) for a mercury concentration of 200 ppb. The experiments were conducted on a customized automatic set-up, and instrumentation, data acquisition and processing were all governed by means of a QBASIC program (PSAKINEL) written by the authors.

Andreu Cladera - One of the best experts on this subject based on the ideXlab platform.

  • automatic kinetic determination of hg ii by Anodic Stripping Potentiometry with constant current oxidation
    Talanta, 1991
    Co-Authors: Andreu Cladera, J.m. Estela, Víctor Cerdà
    Abstract:

    A new kinetic method for the determination of Hg(II) is proposed. It is based on the kinetic evolution of the Anodic Stripping potentiometric curves yielded by a gold electrode previously coated with mercury upon passage of constant electrical currents. The method features a linear determination range between 40 and 800 ppb of Hg(II) and a relative standard deviation of 5% (n = 9) for a mercury concentration of 200 ppb. The experiments were conducted on a customized automatic set-up, and instrumentation, data acquisition and processing were all governed by means of a QBASIC program (PSAKINEL) written by the authors.

J.m. Estela - One of the best experts on this subject based on the ideXlab platform.

  • automatic kinetic determination of hg ii by Anodic Stripping Potentiometry with constant current oxidation
    Talanta, 1991
    Co-Authors: Andreu Cladera, J.m. Estela, Víctor Cerdà
    Abstract:

    A new kinetic method for the determination of Hg(II) is proposed. It is based on the kinetic evolution of the Anodic Stripping potentiometric curves yielded by a gold electrode previously coated with mercury upon passage of constant electrical currents. The method features a linear determination range between 40 and 800 ppb of Hg(II) and a relative standard deviation of 5% (n = 9) for a mercury concentration of 200 ppb. The experiments were conducted on a customized automatic set-up, and instrumentation, data acquisition and processing were all governed by means of a QBASIC program (PSAKINEL) written by the authors.

T M Young - One of the best experts on this subject based on the ideXlab platform.

  • assessment of constant current Anodic Stripping Potentiometry for determination of arsenic in fish and water samples
    Analytical Letters, 1997
    Co-Authors: S B Adeloju, T M Young
    Abstract:

    ABSTRACT An assessment of constant current Anodic Stripping Potentiometry on a glassy carbon gold film electrode (GCAuFE) is described for the determination of arsenic in fish and water samples. The electrolytic preconcentration of arsenic, as As0, on the gold film was affected by the tendency for increased hydrogen evolution at longer deposition times (>3 min.), as well as by the presence of organic and inorganic substances. The hydrogen evolution problem was avoided by use of short deposition time (<1 min.), while organic and inorganic interferences were overcome either by sample decomposition and/or by use of standard additions for quantification. The decomposition of sample material by dry ashing with magnesium nitrate, as an ashing aid, enabled accurate determination of arsenic in fish on the GCAuFE. Reliable determination of arsenic in water samples was also accomplished after dilution with concentrated hydrochloric acid.

S B Adeloju - One of the best experts on this subject based on the ideXlab platform.

  • assessment of constant current Anodic Stripping Potentiometry for determination of arsenic in fish and water samples
    Analytical Letters, 1997
    Co-Authors: S B Adeloju, T M Young
    Abstract:

    ABSTRACT An assessment of constant current Anodic Stripping Potentiometry on a glassy carbon gold film electrode (GCAuFE) is described for the determination of arsenic in fish and water samples. The electrolytic preconcentration of arsenic, as As0, on the gold film was affected by the tendency for increased hydrogen evolution at longer deposition times (>3 min.), as well as by the presence of organic and inorganic substances. The hydrogen evolution problem was avoided by use of short deposition time (<1 min.), while organic and inorganic interferences were overcome either by sample decomposition and/or by use of standard additions for quantification. The decomposition of sample material by dry ashing with magnesium nitrate, as an ashing aid, enabled accurate determination of arsenic in fish on the GCAuFE. Reliable determination of arsenic in water samples was also accomplished after dilution with concentrated hydrochloric acid.