Ferrous analysis

Straub, William A.

doi:10.1021/ac00187a002

Anal. Chem.

1989

DOI: 10.1021/ac00187a002

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Ferrous analysis

William A. Straub¹

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Cited by 5 publications

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Metal analysis in real matrices. Simultaneous voltammetric determination of copper and antimony in alloys

Locatelli

1997

Electroanalysis

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This work addresses the simultaneous determination of copper(n) and antimony(II1) in real matrices by differential pulse (DPASV) and fundamental harmonic alternating current anodic stripping voltammetry (ACASV). The voltammetric measurements were carried out using as supporting electrolyte the same acidic mixture (nitric, hydrochloric and perchloric acids) used in the dissolution of the real matrices with proper dilution. The procedure of the sample preparation is thus reduced to one step hence avoiding errors from long and complex sample handlings prior to the instrumental measurement. The results were verified by the analysis of the standard reference materials NBS-SRM 63 1 Spectrographic Zinc Spelter D-2 and BCS 207/2 Gunmetal. The precision, expressed as relative standard deviation, and the accuracy, expressed as relative error, were, in all cases, less than 5%; the detection limit, for each element and in the experimental conditions employed, was around M. The standard addition technique improved the resolution of the voltammetric method, even in the case of very high metal concentration ratios.

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Metal analysis in real matrices. Simultaneous voltammetric determination of copper and antimony in alloys

Locatelli

1997

Electroanalysis

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Determination of benzene, aniline and nitrobenzene in workplace air: a comparison of active and passive sampling

Patil¹,

Lonkar²

1994

Journal of Chromatography A

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Generation of Natural pH Gradients in Microfluidic Channels for Use in Isoelectric Focusing

et al. 2000

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As a part of an ongoing investigation of the use of isoelectric focusing (IEF) in microfluidic devices, pH gradients were electrochemically formed and optically quantified in microfluidic channels using acid-base indicators. The microchannels consisted of two parallel 40-mm-long electrodes with an interelectrode gap of 2.54 mm; top and bottom transparent windows were separated by 0.2 mm. Gradients in pH were formed as a result of the electrochemical decomposition of water at an applied potential not higher than 2.5 V to avoid generation of gas bubbles. Solutions contained low concentrations of a single buffer. The stability of the pH gradients and their sensitivity to changes in initial conditions were investigated under static (nonflow) conditions. Isoelectric focusing of sample biological analytes, bovine hemoglobin and bovine serum albumin, was performed to illustrate the potential of "microfluidic transverse IEF" for use in continuous concentration and separation systems.

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Ferrous analysis

Cited by 5 publications

References 42 publications

Metal analysis in real matrices. Simultaneous voltammetric determination of copper and antimony in alloys

Metal analysis in real matrices. Simultaneous voltammetric determination of copper and antimony in alloys

Determination of benzene, aniline and nitrobenzene in workplace air: a comparison of active and passive sampling

Generation of Natural pH Gradients in Microfluidic Channels for Use in Isoelectric Focusing

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