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Voltammetric Detection of Aqueous Glyphosate on a Copper and Poly(Pyrrole)‐electromodified Activated Carbon Fiber
Author(s) -
Shrivastava Surabhi,
Kumar Arun,
Verma Nishith,
Chen BorYann,
Chang ChangTang
Publication year - 2021
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.202060408
Subject(s) - detection limit , chemistry , aqueous solution , differential pulse voltammetry , repeatability , reproducibility , glyphosate , nuclear chemistry , activated carbon , cyclic voltammetry , analytical chemistry (journal) , chromatography , electrode , electrochemistry , organic chemistry , adsorption , agronomy , biology
Aqueous glyphosate (GLYP) was voltammetrically detected using a Cu‐(poly)pyrrole composite electrochemically deposited on activated carbon fiber for the first time in a single‐step method. Differential pulse voltammetry indicated good linearity (R 2 = 0.9902) in the response over 0.02–12 mg L −1 range, with a low limit of detection (0.01 mg L −1 ). The sensor exhibited reproducibility for soil and fruit samples (RSD values = 2.41 and 3.87%, respectively). The response showed repeatability over 100 consecutive measurements. The response was also unaffected by the interfering substances containing the same functional groups as in GLYP and its metabolite. The method described in this study is facile.