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Electrochemical Biosensing of Algal Toxins in Water: The Current State-of-the-Art

Author(s):

Wei Zhang, Mike B. Dixon, Christopher Saint, Kar Seng Teng, Hiroaki Furumai

Journal:

ACS Sensors

Year:

2018

Volume:

3

Pages

1233-1245

DOI:

10.1021/acssensors.8b00359

Abstract:

Due to increasing stringency of water legislation
and extreme consequences that failure to detect some
contaminants in water can involve, there has been a strong
interest in developing electrochemical biosensors for algal
toxin detection during the past decade, evidenced by literature
increasing from 2 journal papers pre-2009 to 24 between 2009
and 2018. In this context, this review has summarized recent
progress of successful algal toxin detection in water using
electrochemical biosensing techniques. Satisfactory detection
recoveries using real environmental water samples and good
sensor repeatability and reproducibility have been achieved,
along with some excellent limit-of-detection (LOD) reported.
Recent electrochemical biosensor literature in algal toxin
detection is compared and discussed to cover three major design components: (1) biorecognition elements, (2) electrochemical
read-out techniques, and (3) sensor electrodes and signal amplification strategy. The recent development of electrochemical
biosensors has provided one more step further toward quick in situ detection of algal toxins in the contamination point of the
water source. In the end, we have also critically reviewed the current challenges and research opportunities regarding
electrochemical biosensors for algal toxin detection that need to be addressed before they attain commercial viability.

© Molecular Junction Database | University of Southern California. All rights reserved.

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