The Integration of Whole-Cell Biosensors for the Field-Ready Electrochemical Detection of Arsenic. Issue 6 (2nd June 2021)

• Record Type: Journal Article
• Authors: Sánchez, Sergio; McDonald, Mhairi; Silver, Dylan M.; de Bonnault, Sandie; Chen, Cheng; LeBlanc, Katie; Hicks, Emily C.; Mayall, Robert M.
• Is Part Of: Journal of the Electrochemical Society. Volume 168:Issue 6(2021)
• Publication Date: 2021-06-02
• Subjects: Sensors -- Bioelectrochemistry -- Electroanalytical Electrochemistry -- Process integration; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/1945-7111/ac049e
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : 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.