Premium
Disposable nickel screen‐printed sensor based on dimethylglyoxime‐containing carbon ink
Author(s) -
Wang Joseph,
Nascimento Valberes B.,
Lu Jianmin,
Park Deog Su,
Angnes Lucio
Publication year - 1996
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.1140080706
Subject(s) - dimethylglyoxime , nickel , inkwell , carbon fibers , detection limit , screen printing , materials science , nanotechnology , chemistry , analytical chemistry (journal) , chromatography , metallurgy , composite material , composite number
Disposable complexing (preconcentrating) sensor strips for trace nickel have been fabricated by doping the screen‐printed carbon ink with ligand dimethylglyoxime (DMG). The carbon ink is shown to be a useful matrix for incorporating the DMG, with the ligand maintaining its attractive coordination chemistry following the printing and firing processes. The response is characterized with respect to the ink composition, preconcentration period and potential, solution conditions and other variables. A short (30 s) accumulation period yields a detection limit of 5 μg/L nickel. The highly stable response indicates great promise for use as reusable devices. Measurement of nickel in a river water sample is demonstrated. Such incorporation of ligands into screen‐printed carbon inks provides a promising route for thick‐film sensors based on the preconcentration/voltammetric strategy.