Abstract

A new electrochemical sensor based on molecular imprinting technology was developed, for rapid and sensitive detection of odorous substance geosmin (GSM) in water. In this method, the molecularly imprinted membrane was successfully modified on the surface of the glassy carbon electrode (GCE) using electrochemical deposition method. In the presence of target analyte (geosmin), the target analyte occupies the detection site and detection signal will attenuate. As the concentration of the target analyte increases, the attenuation of the electrical signal becomes more pronounced. This sensor can quantitatively detect geosmin at concentrations as low as 5 ng/L, which is currently the lowest limit of detection (LOD) for GSM detection by an electrochemical sensor in reported studies. The modified GCE provided an analytical curve for GSM detection in the range of 5–200 ng/L.

HIGHLIGHTS

  • A new electrochemical sensor based on molecular imprinting technology was developed to detect geosmin in water.

  • This sensor can detect geosmin at concentrations as low as 5 ng/L.

  • The modified GCE provided an analytical curve for geosmin detection in the range of 5–200 ng/L.

Graphical Abstract

Graphical Abstract
Graphical Abstract
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Author notes

This manuscript has been thoroughly edited by a native English speaker from an editing company. Editing Certificate will be provided upon request.

Supplementary data