Anodic stripping voltammetric measurement of trace cadmium at tin-coated carbon paste electrode

Li, Bang Lin; Wu, Zhi Ling; Xiong, Chang Hong; Luo, Hong Qun; Li, Nian Bing

doi:10.1016/j.talanta.2011.11.070

Cited by 46 publications

(21 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…13 The use of carbon paste electrodes 14 (CPEs) as working electrodes in ASV is a particularly interesting approach for metal ions determination, 15 since these electrodes can be prepared in a very simple and inexpensive way, and they are easily chemically modified. [15][16][17] Literature has demonstrated that CPEs modified with mercury, 18 tin 19 and bismuth 20 can be successfully used for metal ions determination. Among these modifiers, Bi is specially advantageous due to its low toxicity, insensitivity to dissolved oxygen and high ability to form alloys with various metal species.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of Zn2+ in Antiseptic Dusting Powder and Multivitamins Using a Carbon Paste Electrode Modified with Bi Anchored on Amberlite® IR120

Fonseca¹,

Ribeiro²,

Pradela‐Filho³

et al. 2018

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

This work presents a voltammetric method for Zn 2+ determination in antiseptic dusting powder and multivitamin commercial samples, combining an alkaline extraction using NaOH aqueous solution with a carbon paste electrode chemically modified with Bi anchored on Amberlite ® IR120 ion exchange resin (CPEAmb/Bi). The best conditions for electrode preparation were: 10% (m/m) of Amberlite ® IR 120; 30 s Bi 3+ accumulation time (open circuit) in 0.5 mmol L-1 Bi 3+ solution prepared in 0.1 mol L-1 acetate buffer (pH = 5.5). The analytical curve for Zn 2+ using the CPEAmb/Bi presented linear range from 0.05 to 8.2 μmol L-1 and the limit of detection was 10 nmol L-1. The voltammetric method was simple, fast, efficient and low-cost for the Zn 2+ determination in antiseptic dusting powder and multivitamin samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of Zn2+ in Antiseptic Dusting Powder and Multivitamins Using a Carbon Paste Electrode Modified with Bi Anchored on Amberlite® IR120

Fonseca¹,

Ribeiro²,

Pradela‐Filho³

et al. 2018

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…The linear regression equation for Cd 2+ y1 = 0.172x -2.959; y2 = 0.227x -2.910; y3 = 0.298x -2.305, (y: µA, x: ppb) in the concentration range from 20 to 100 ppb and the correlation coefficient is R = 0.995, R = 09975, R = 0.9990 for EL1, EL2 and EL3, respectively. The detection limit, defined as the concentration of the analyte giving signals equivalent to three-time the standard deviation of the blank signals (S/N = 3), is 7.83 ppb for EL1, 4.82 ppb for EL2 and 3.72 ppb for EL3, which is as sensitive as that for Cd 2+ in the some previous publications 35,36 . The reproducibility of the stripping peak current obtained on IL-CPE was investigated by repeated measurements in the solution containing 40 ppb Cd 2+ .…”

Section: Electrochemical Behaviour Of Ionic Liquid-carbon Pastementioning

confidence: 83%

Anodic Stripping Voltammetric Determination of Trace Cadmium Using Carbon Paste Electrode Modified by 1-Butyl-3-methylimidazolium Tetraflouroborate Ionic Liquid

Hung¹,

Anh²,

Ha³

et al. 2014

Asian J. Chem.

View full text Add to dashboard Cite

“…Tin film modified electrode have been reported in the previous literature with GCE and a carbon paste electrode (CPE) to provide satisfactory results are towards the determination of cadmium (II). 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 x high tin (II) concentrations the lowest tin (II) concentration of 20 mgL -1 was determined to be the optimum modification concentration (see figure 2A and 2B inset). At this optimum tin (II) concentration of 20 mgL -1 , the modified BDDE exhibits a peak height increase of 42 % and 23 % for lead (II) and cadmium (II) respectively, however the modified SPE experiences an increase of 14 % for lead (II) and a 8 % increase for cadmium (II) compared to the respective unmodified electrodes (the optimised concentration is emphasised by the utilisation of a dotted line in figures 2A and 2B).…”

Section: Tin In-situ Modified Electrodes For the Determination Of Leamentioning

confidence: 99%

Metallic modified (bismuth, antimony, tin and combinations thereof) film carbon electrodes

Foster

Souza

Metters

et al. 2015

Analyst

View full text Add to dashboard Cite

In this paper in situ bismuth, antimony, tin modified electrodes and combinations thereof are explored towards the model target analytes cadmium(II) and lead(II), chosen since they are the most widely studied, to explore the role of the underlying electrode substrate with respect to boron-doped diamond, glassy carbon, and screen-printed graphite electrodes. It is found that differing electrochemical responses are observed, dependent upon the underlying electrode substrate. The electrochemical response using the available range of metallic modifications is only ever observed when the underlying electrode substrate exhibits relatively slow electron transfer properties; in the case of fast electron transfer properties, no significant advantages are evident. Furthermore these bismuth modified systems which commonly employ a pH 4 acetate buffer, reported to ensure the bismuth(III) stability upon the electrode surface can create create a problem when sensing at low concentrations of heavy metals due to its high background current. It is demonstrated that a simple change of pH can allow the detection of the target analytes (cadmium(II) and lead(II)) at levels below that set by the World Health Organisation (WHO) using bare graphite screen-printed electrodes.

show abstract

Anodic stripping voltammetric measurement of trace cadmium at tin-coated carbon paste electrode

Cited by 46 publications

References 28 publications

Voltammetric Determination of Zn2+ in Antiseptic Dusting Powder and Multivitamins Using a Carbon Paste Electrode Modified with Bi Anchored on Amberlite® IR120

Voltammetric Determination of Zn2+ in Antiseptic Dusting Powder and Multivitamins Using a Carbon Paste Electrode Modified with Bi Anchored on Amberlite® IR120

Anodic Stripping Voltammetric Determination of Trace Cadmium Using Carbon Paste Electrode Modified by 1-Butyl-3-methylimidazolium Tetraflouroborate Ionic Liquid

Metallic modified (bismuth, antimony, tin and combinations thereof) film carbon electrodes

Contact Info

Product

Resources

About