The Integration of Whole-Cell Biosensors for the Field-Ready Electrochemical Detection of Arsenic

Rapid on-site measurements of arsenic (As) are essential for the timely remediation of As-contaminated groundwater for both municipal and emergency response applications. Current field tests suffer from either complicated end-user instructions or a lack of accuracy and specificity. The system presen...

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Veröffentlicht in:Journal of the Electrochemical Society 2021-06, Vol.168 (6), p.67508
Hauptverfasser: Sánchez, Sergio, McDonald, Mhairi, Silver, Dylan M., de Bonnault, Sandie, Chen, Cheng, LeBlanc, Katie, Hicks, Emily C., Mayall, Robert M.
Format: Artikel
Sprache:eng
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Zusammenfassung:Rapid on-site measurements of arsenic (As) are essential for the timely remediation of As-contaminated groundwater for both municipal and emergency response applications. Current field tests suffer from either complicated end-user instructions or a lack of accuracy and specificity. The system presented here combines a whole-cell bacterial biosensor with an electrochemical measurement that provides enhanced accuracy and signal intensity compared to traditional bacterial-detection approaches. When integrated within a customized hardware system, this whole-cell sensor demonstrated excellent specificity and sensitivity. This fast, sensitive, and easy-to-use approach is a viable alternative for on-site arsenic testing.
ISSN:0013-4651
1945-7111
DOI:10.1149/1945-7111/ac049e