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- W2594296373 abstract "An ultrasensitive micro sensor for the detection of trace lead (II) is fabricated by mixed dispersion solution of bismuth nanoparticles (Bi NPs) and PDDA, and layer-by-layer self-assembled (LBL SA) with graphene (G) suspension solution on a micro gold electrode. The LBL SA G-Bi NPs sensor performance has been greatly enhanced in determination of Pb (II) using anodic stripping voltammetry (ASV). Compared with a sensor without surface modification, the sensor's stripping peak potential decreased from −0.520 V to −0.564 V, and its peak current increased from 1.227 μA to 8.372 μA. Compared with a sensor modified by LBL SA G (without Bi NPs), stripping peak potential decreased from −0.548 V to −0.572 V, the sensor's peak current increased from 0.284 μA to 1.263 μA. This sensor's limit of detection (LOD) of Pb (II) was achieved as 0.078 ppb with a sensitivity of 1.061 μA/ppb. This simple but effective graphene-metal nanocomposites construction method can be widely used in the development of highly sensitive ion sensor." @default.
- W2594296373 created "2017-03-16" @default.
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- W2594296373 date "2017-01-01" @default.
- W2594296373 modified "2023-09-26" @default.
- W2594296373 title "Ultrasensitive micro sensor based on layer-by-layer self-assembled graphene and bismuth nanoparticles for trace lead ions determination" @default.
- W2594296373 doi "https://doi.org/10.1109/memsys.2017.7863601" @default.
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