期刊
ANALYTICAL CHEMISTRY
卷 82, 期 11, 页码 4329-4332出版社
AMER CHEMICAL SOC
DOI: 10.1021/ac100776p
关键词
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资金
- URC MOE Tier I Research Fund [R143-000-382-112]
- NUS
- Environmental & Water Industry (EWI)
A ubiquitous electrochemical sensor which can detect pollutants in nonconducting aqueous solutions is prepared using a triple layer design, comprising a polyelectrolyte entrapped within micrometer-length nanochannels and sandwiched between two nanometer-thick electrode layers. Replacement of the polyelectrolyte with an enzyme polyelectrolyte mixture within the nanochannels confers excellent biosensing characteristics. Its superior analytical performance of quantitating copper ions and formaldehyde at trace levels without additional sample treatment steps is demonstrated in freshwater samples derived from a local reservoir.
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