A Sulfide Ion Sensor from Commercial Bentonite

Duangsamorn Morawong; Atchana Wongchaisuwat; Ladda Meesuk

doi:10.4028/www.scientific.net/AMR.894.412

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 894A Sulfide Ion Sensor from Commercial Bentonite

A Sulfide Ion Sensor from Commercial Bentonite

Abstract:

Bentonite is a synonymous term of montmorillonite which is a clay mineral consisting of 2 : 1 aluminosilicate layered structure. In this work, a commercial bentonite was used to prepare an intercalation compound [Ca (2,2-bipyridine)₃]²⁺ in the interlayer space, by solid-solid reaction, which formation was confirmed by the expansion of the interlayer space of bentonite from 1.5 to 1.8 nm, by powder X-Ray Diffraction technique. The intercalation compound [Ca (2,2-bipyridine)₃]²⁺-bentonite was then used as a sensor to assemble a potentiometric electrode. The electrode gave best response to sulfide ion in terms of Nernstian slope. Precision of measurement, reproducibility and percent recovery were also studied. The electrode could be used to measure sulfide ion in real water samples and gave satisfactory results.

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Periodical:

Advanced Materials Research (Volume 894)

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412-415

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.894.412

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Online since:

February 2014

Authors:

Duangsamorn Morawong, Atchana Wongchaisuwat, Ladda Meesuk

Keywords:

Commercial Bentonite, Potentiometry, Sensor, Sulfide Ion

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