期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 264, 期 -, 页码 240-248出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.02.171
关键词
Nickel hexacyanoferrate/poly(2,6-diaminopyridine); hybrids; Nitrite; Electrochemical sensor; Electrocatalysis; Preconcentration
资金
- National Natural Science Foundation of China [21477009]
- Natural Science Foundation of Jiangsu Province [BK20171194, BK20150269]
- Changzhou high-tech Key Laboratory [CM20153001]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
In this study, a simple and sensitive method for the determination of nitrite (NO2-) in environmental and food samples by amperometry with nickel hexacyanoferrate/poly(2,6-diaminopyridine) (NiHCF/PDAP) hybrids modified electrode was developed. The NiHCF/PDAP hybrids prepared via a facile one-step electrosynthesis method exhibited significantly high sensitivity and wide linear range for the determination of nitrite due to the high electrocatalytic activity of NiHCF and the preconcentration ability of PDAP in acidic conditions. In addition, the as-prepared NiHCF/PDAP also showed high selectivity with no interferences from other anions, high stability and reproducibility in the determination of nitrite. Finally, the developed hybrids were applied in the determination of nitrite in tap water, lake water and ham sausage samples, and the results demonstrated its potential as a sensitive and selective electrochemical sensor for nitrite. (c) 2018 Elsevier B.V. All rights reserved.
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