cupferron


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cupferron

[′kəp·fə‚rän]
(organic chemistry)
NH4ONONC6H5 A colorless salt that forms crystals with a melting point of 164°C; its acid solution is a precipitating reagent. Also known as copperon.
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Linear ranges and detection limits for the simultaneous determination of bismuth and lead were evaluated under the selected conditions: 0.1 mol [L.sup.-1] acetic buffer (pH = 4.6), 1 x [10.sup.-4]mol [L.sup.-1] cupferron, accumulation potential -0.05 V, and accumulation time 30 s.
As it was proved in the previous procedures using HMDE as a working electrode and cupferron as a complexing agent, the organic compounds seriously suppress particularly the voltammetric signal of bismuth [37].
The adsorptive stripping voltammetry using cupferron as a complexing agent and renewable mercury film silver based electrode as a working electrode was successfully employed.
Grabarczyk, "Simultaneous voltammetric determination of trace bismuth(III) and cadmium(II) in water samples by adsorptive stripping voltammetry in the presence of cupferron," Journal of Electroanalytical Chemistry, vol.
Koper, "Simultaneous Determination of Trace Uranium(VI) and Cadmium(II) by Adsorptive Stripping Voltammetry in the Presence of Cupferron as a Complexing Agent," Electroanalysis, vol.
Grabarczyk, "Sensitive adsorptive stripping voltammetric method for direct determination of trace concentration of lead in the presence of cupferron in natural water samples," International Journal of Environmental Analytical Chemistry, vol.
Koper, "Direct Determination of Cadmium Traces in Natural Water by Adsorptive Stripping Voltammetry in the Presence of Cupferron as a Chelating Agent," Electroanalysis, vol.
Wardak, "A new voltammetric strategy for sensitive and selective determination of gallium using cupferron as a complexing agent," Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering, vol.