Carbon screen-printed electrodes (CSPE) are used as substrate for bismuth nanoparticles immobilization. Sensors
modified with bismuth nanoparticles of different origin (prepared by the method of gas condensation and
chemically synthesized) are used to determine nickel by adsorptive stripping voltammetry (AdSV). The effect of
the structural organization of nanoparticles on sensor sensitivity is studied. It is established that chemically
synthesized nanoparticles of bismuth, which formagglomerates of about 380±76 nm on the electrode surface,
demonstrate optimal sensory properties. Direct current (DC) voltammetric stripping response is linear and is
observed within the range from 0.85×10−8 to 8.48×10−8M Ni(II) (deposition time — 120 s). The detection
limit is 3.2 nM, precision is good (RSD=4.8% at 5.0×10−8 M Ni(II), n=14).
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