NDLI: Comparison of adsorptive stripping voltammetry (AdSV) and capillary zone electrophoresis (CZE) for the trace determination of selected metal ions, chelated with 2-(5′-bromo-2′-pyridylazo)-5-(diethylamino)phenol (PADAP)

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Comparison of adsorptive stripping voltammetry (AdSV) and capillary zone electrophoresis (CZE) for the trace determination of selected metal ions, chelated with 2-(5′-bromo-2′-pyridylazo)-5-(diethylamino)phenol (PADAP)

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Journals Bulletin ( Analytical Proceedings including Analytical Communications Vol - 32 Issue - 12 )

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Comparison of adsorptive stripping voltammetry (AdSV) and capillary zone electrophoresis (CZE) for the trace determination of selected metal ions, chelated with 2-(5′-bromo-2′-pyridylazo)-5-(diethylamino)phenol (PADAP)

Content Provider	Royal Society of Chemistry (RSC)
Author	Oxspring, D. A. Smyth, W. F. Maxwell, T. J.
Copyright Year	1995
Abstract	Adsorptive stripping voltammetry (AdSV) is compared with capillary zone electrophoresis (CZE) for the detection and determination of trace concentrations of metal ions such as Co2+, Cu2+, Cd2+, Zn2+ and Pb2+ as their 2-(5′-bromo-2′-pyridylazo)-5-(diethylamino)phenol (PADAP) chelates. Limits of detection for Cd2+, Zn2+, Pb2+ and Co2+ were 9, 3, 6 and 0.3 ppb, respectively, using the AdSV method, with Cu2+ not giving a reproducible cathodic signal as the Cu2+–PADAP chelate. The technique would appear to be selective towards the determination of Co2+ in a mixture since its adsorbable chelate with PADAP was reduced at –670 mV, giving a voltammetric response not affected by the presence of equimolar concentrations (1 × 10–7 mol dm–3) of Cd2+, Pb2+ and Zn2+, CZE using PADAP at a concentration of 10–4 mol dm–3 in the run buffer had higher limits of detection than AdSV but possessed greater selectivity in that, at pH 6, Co2+, Cd2+, Zn2+ and Cu2+ could be resolved as their chelates with PADAP, the Pb2+ chelate not giving a signal at all. Other selectivities could be observed at higher pH values. The CZE technique was also found particularly responsive to the Co3+–PADAP chelate in the presence of other trace metal ions. It is therefore being investigated as a trace analytical method for the determination of Co2+ in selected complex matrices.
Starting Page	489
Ending Page	491
Page Count	3
File Format	PDF
ISSN	0144557X
Volume Number	32
Issue Number	12
Journal	Analytical Proceedings including Analytical Communications
DOI	10.1039/AI9953200489
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Phenol Electrochemical stripping analysis PH Electrophoresis The Technique Trace metal
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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Separation and sensitive determination of metal ions by capillary zone electrophoresis with 2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)phenol

Separation and Sensitive Determination of Metal Ions by Capillary Zone Electrophoresis with 2-(5-Nitro-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)phenol

Catalytic Systems in Adsorptive Stripping Voltammetry

Simultaneous separation and preconcentration of trace amount of copper, nickel, cadmium and zinc ions onto modified Amberlite XAD-4 loaded with 5-Br-PADAP

Simultaneous determination of platinum and rhodium by adsorptive stripping voltammetry (AdSV) with semicarbazide

Solar UV-assisted sample preparation of river water for ultra-trace determination of uranium by adsorptive stripping voltammetry

Kinetics of Complexation of Uranium with 2-(5-Bromo-2-Pyridylazo)-5-(Diethylamino) Phenol (Br-PADAP) in a 1:1 Water-Ethanol Medium

Determination of trace titanium(iv) by differential pulse catalytic adsorptive stripping voltammetry at a bismuth film electrode

Spectrophotometric determination of arsenic in soil samples using 2-(5-bromo-2-pyridylazo)-5-di-ethylaminophenol (Br-PADAP)

Comparison of adsorptive stripping voltammetry (AdSV) and capillary zone electrophoresis (CZE) for the trace determination of selected metal ions, chelated with 2-(5′-bromo-2′-pyridylazo)-5-(diethylamino)phenol (PADAP)

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Separation and sensitive determination of metal ions by capillary zone electrophoresis with 2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)phenol

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Comparison of adsorptive stripping voltammetry (AdSV) and capillary zone electrophoresis (CZE) for the trace determination of selected metal ions, chelated with 2-(5′-bromo-2′-pyridylazo)-5-(diethylamino)phenol (PADAP)