Elektrolytische abscheidung im hydrodynamischen system von ng-mengen eisen, kobalt, zink und wismut im graphitrohr

Volland, Gabriel; Tschöpel, P.; Tölg, G.

doi:10.1016/s0003-2670(01)82289-3

Cited by 34 publications

(3 citation statements)

References 12 publications

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“…Deposition of metals in porous carbon-based electrodes has been used for their electrochemical preconcentration in AAS 13 and MIP OES 14 methods. It was found that Ni can be deposited with high efficiency on porous carbon electrode made of crushed glassy carbon particles which have significantly lower background currents than graphite electrodes.…”

Section: Introductionmentioning

confidence: 99%

Determination of nickel in hair samples by graphite furnace atomic absorption spectrometry and flow-through stripping chronopotentiometry

Borošová¹,

Manová

Mocák

et al. 2010

Anal. Methods

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Section: Introductionmentioning

confidence: 99%

Determination of nickel in hair samples by graphite furnace atomic absorption spectrometry and flow-through stripping chronopotentiometry

Borošová¹,

Manová

Mocák

et al. 2010

Anal. Methods

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“…Lund et al [5] described a method using a platinum wire which was introduced into the flame of the spectrometer. For ET-AAS Volland et al [6] developed a procedure where the graphite tube (as cathode) was inserted into a continuous flow system. A platinum/iridium wire was used as counter electrode in the tube.…”

Section: Introductionmentioning

confidence: 99%

Determination of metal ions by ion chromatography with precolumn electrochemical preconcentration

Hissner

Mattusch

Werner

1996

Analytical and Bioanalytical Chemistry

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The determination of heavy metals in concentrations less than 10(-6) mol/L by ion chromatography with conductivity detection requires a preconcentration step. Therefore, a special electrochemical equipment and method was developed for the on-line preconcentration of the divalent metals Ni, Co, Zn and Cd and their subsequent ion chromatographic determination. The loop of the injection valve of an ion chromatograph was replaced by an electrochemical flow-through-cell with a gold working electrode, a platinum auxiliary electrode and a silver/silver sulphate reference electrode. The preconcentration step consists of the deposition of the reduced metals on the electrode surface during a continuous pumping of the sample solution through the cell. After switching of the mobile phase through the cell, the analytes are injected after their reoxidation directly into the mobile phase. A new preconcentration step is simultaneously possible during the actual chromatographic run. An effective separation of the analytes from the matrix is also possible with the proposed system. A maximum of metal ion accumulation was obtained after 120 min in the galvanostatic mode on a gold tube electrode. The detection limits for Co(II), Ni(II), Zn(II) and Cd(II) were improved by a factor of 7.7, 10.4, 11.2, 14.0, respectively, and were in the 0.1 micromol/L concentration range with a RSD of 2-6%. The accumulation of metal ions was disturbed in the presence of Cr(III).

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“…To avoid such sources of error, electrochemical techniques of target preparation by cathodic deposition have been introduced recently for X-ray emission analysis (15)(16)(17). In spite of encouraging results, a more widespread analytical application of the technique is limited to the elements which can be recovered from aqueous solution in sufficient yield.…”

mentioning

confidence: 99%

Target preparation for x-ray emission analysis by anodic electrodeposition of cyano metalates from 2-propanol-water mixtures

Wundt¹,

Duschner²,

Starke³

1979

Anal. Chem.

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Elektrolytische abscheidung im hydrodynamischen system von ng-mengen eisen, kobalt, zink und wismut im graphitrohr

Cited by 34 publications

References 12 publications

Determination of nickel in hair samples by graphite furnace atomic absorption spectrometry and flow-through stripping chronopotentiometry

Determination of nickel in hair samples by graphite furnace atomic absorption spectrometry and flow-through stripping chronopotentiometry

Determination of metal ions by ion chromatography with precolumn electrochemical preconcentration

Target preparation for x-ray emission analysis by anodic electrodeposition of cyano metalates from 2-propanol-water mixtures

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