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Bismuth Nanoparticles in Stripping Voltammetry of Sulfide Ions
Author(s) -
Sudakova L. A.,
Malakhova N. A.,
Stozhko N. Yu.
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400130
Subject(s) - bismuth , sulfide , stripping (fiber) , nanoparticle , detection limit , inorganic chemistry , ion , voltammetry , materials science , cyclic voltammetry , anodic stripping voltammetry , chemistry , dispersion (optics) , electrode , analytical chemistry (journal) , electrochemistry , nanotechnology , chromatography , organic chemistry , composite material , physics , optics
Abstract For the first time, carbon screen‐printed electrodes (CSPE) modified with bismuth nanoparticles have been used to determine sulfide ions with stripping voltammetry (SV) by formation of sparingly soluble compounds with the electrode material. The impact of weight, degree of bismuth dispersion on CSPE surface, and Bi 2 S 3 accumulation parameters on the sensitivity of the sensor have been studied. It has been established that bismuth nanoparticles (Bi nano ) as agglomerates of about 180 nm exhibit the optimum sensory properties. The linear concentration range has been observed over the interval of 0.93–5 µM sulfide ions during the accumulation time of 75 s. A detection limit of 0.15 µM sulfide ions was achieved.