Analytical procedures for voltammetric analysis

These analytical procedures, if not differently specified, are to be applied to limpid solutions not containing oxidising or reducing agents, suspended solids, organic substances and colloids. Samples are meant to be prepared in order to fulfil these conditions, leading to a final solution of pH in the range 1 – 10, to avoid any damage to the equipment. Prepare samples, standard solutions for additions and supporting electrolytes using ultra- pure bidistilled water and clean chemicals (reagents for trace metals analysis). Always perform a blank analysis when environmental pollutants are investigated, like lead, zinc, copper, iron and chlorides.

Elements or CompoundDescriptionPDF.met
AluminiumMethod: Calcon in 0.1 M acetate buffer, pH 4.7. Differential Pulse Voltammetry (DPV/a)ITENAMEL
AntimonyDifferential Pulse Stripping Voltammetry (DPS/a)
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Arsenic (total)Differential Pulse Stripping Voltammetry (DPS/a). Electrode: Gold film on glassy carbon electrode
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Ascorbic acid in fruit juiceDifferential Pulse Voltammetry (DPV/a)
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BismuthDifferential Pulse Stripping Voltammetry (DPS/a)
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Boric acid in nickel plating bathDifferential Pulse Voltammetry (DPV/a)
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CadmiumDifferential Pulse Stripping Voltammetry (DPS/a)
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ChloridesDifferential Pulse Voltammetry (DPV/a)
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Chromium (VI and total)Method: DTPA in 0.2 M acetate buffer, pH 6.2. Differential Pulse Adsorptive Stripping Voltammetry (DPS/a)ITENAMEL
CobaltMethod: Dimetilglioxime in 0.1 M tartrate buffer, pH 9. Differential Pulse Voltammetry (DPV/a)
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CopperDifferential Pulse Stripping Voltammetry (DPS/a)ITENAMEL
CyanidesDifferential Pulse Voltammetry (DPV/a)
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FormaldehydeDifferential Pulse Voltammetry (DPV/a)
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IronMethod: Triethanolamine – Sodium hydroxide buffer. Differential Pulse Voltammetry (DPV/a).
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LeadDifferential Pulse Stripping Voltammetry (DPS/a)ITENAMEL
ManganeseDifferential Pulse Stripping Voltammetry (DPS/a) . Electrode: Glassy carbonITENAMEL
MercurySquare Wave Stripping Voltametry (SQS). Electrode: rotating gold electrode (2 mm diameter)
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MolybdenumMethod: Mandelic acid in H2SO4, pH 3-3.5 Differential Pulse Voltammetry (DPV/a)ITENAMEL
NickelMethod: Dimetilglioxime in 0.1 M tartrate buffer, pH 9. Differential Pulse Voltammetry (DPV/a)ITENAMEL
NitritesDifferential Pulse Voltammetry (DPV/a)
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PalladiumMethod: Dimetilglioxime in 0.1 M tartrate buffer, pH 5.15. Differential Pulse Stripping Voltammetry (DPS/a)
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PlatinumDifferential Pulse Voltammetry (DPV/a)ITENAMEL
Saccharin in nickel plating bathDifferential Pulse Voltammetry (DPV/a)
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SeleniumDifferential Pulse Stripping Voltammetry (DPS/a)
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SilverDifferential Pulse Stripping Voltammetry (DPS/a). Electrode: Glassy carbon
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SulphidesDifferential Pulse Voltammetry (DPV/a)
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Sulphur dioxide (sulphites)Differential Pulse Voltammetry (DPV/a)ITENAMEL
Sulphur in gasoline and petroleumDifferential Pulse Voltammetry (DPV/a)
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ThalliumDifferential Pulse Stripping Voltammetry (DPS/a)
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Thiourea in nickel and copper plating bathDifferential Pulse Voltammetry (DPV/a)
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TinMethod: tropolone in oxalic – hydrochloric acid. Differential Pulse Voltammetry (DPV/a)
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Total AldehydesMethod: Hydrazine in 0.1 M citrate buffer, pH 6.5. Differential Pulse Voltammetry (DPV/a)
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VanadiumDifferential Pulse Stripping Voltammetry (DPS/a)
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Zinc (high levels)Differential Pulse Voltammetry (DPV/a)
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Zinc (low levels)Differential Pulse Stripping Voltammetry (DPS/a)ITENAMEL