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Quick and Easy Modification of Glassy Carbon Electrodes with Ionic Liquid and Tetraruthenated Porphyrins for the Electrochemical Determination of Atrazine in Water
Author(s) -
Calfumán Karla,
Honores Jessica,
Isaacs Mauricio,
Quezada Diego,
Valdebenito Javier,
Urzúa Marcela
Publication year - 2019
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.201800771
Subject(s) - atrazine , ionic liquid , electrochemistry , detection limit , glassy carbon , electrode , imide , materials science , chemistry , chemical engineering , pesticide , chromatography , catalysis , polymer chemistry , organic chemistry , cyclic voltammetry , agronomy , biology , engineering
Atrazine is a pesticide used to control broadleaf weeds, however its wide distribution and its high persistence in the soil and in surface waters has resulted in a public and environmental health problem. Present results shows the design, construction and characterization of glassy carbon electrodes modified with tetrarutenated metalloporphyrin (M=Ni (II) and Zn (II)) and 1‐butyl‐3‐methylimidazolium bis (trifluoromethylsulfonyl) imide, BMIMNTF 2 . The modification was reproducible and sensitive for the electrochemical detection of atrazine in neutral media. The detection limit was 230 nM when using GC/BMIMNTF 2 /ZnTRP and 540 nM with GC/BMIMNTF 2 /NiTRP, meaning that his methodology can be a feasible and inexpensive way to detect atrazine in trace levels.