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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Shariki, Sara
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Publications (3/3 displayed)
- 2011Tuning percolation speed in layer-by-layer assembled polyaniline–nanocellulose composite filmscitations
- 2011Enhanced TiO2 surface electrochemistry with carbonised layer-by-layer cellulose-PDDA composite filmscitations
- 2011Electroanalysis at salt - cotton - electrode interfaces: preconcentration effects lead to nano-molar Hg(2+) sensitivitycitations
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article
Electroanalysis at salt - cotton - electrode interfaces: preconcentration effects lead to nano-molar Hg(2+) sensitivity
Abstract
Cotton is employed as a sample absorbent which is analysed sandwiched between a glassy carbon electrode and ammonium nitrate salt in a humidified argon atmosphere (ca. 80% relative humidity). Exploratory experiments show that well-defined voltammetric responses for the Fe(CN)(6)(3-/4-) redox system pre-absorbed into cotton are observed. Experiments with gold plating solution absorbed into cotton reveal the microscopic regions (cotton - glassy carbon contact points) of electrochemical activity where gold microparticles are plated onto the cotton surface. Stripping voltammetry experiments for trace metals such as Hg(2+) pre-absorbed into cotton show a surprisingly high sensitivity with nanomolar detection readily achieved.