Journal
ACS SENSORS
Volume 3, Issue 7, Pages 1233-1245Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.8b00359
Keywords
electrochemical; biosensor; algal toxin; enzymes; nanomaterials
Funding
- Japan Society for Promotion of Science (JSPS) Overseas Fellowship Program [P15712]
- European Commission Horizon 2020 Marie Sklodowska-Curie Actions [743993]
- Austrian Science Fund (FWF) [P15712] Funding Source: Austrian Science Fund (FWF)
- Marie Curie Actions (MSCA) [743993] Funding Source: Marie Curie Actions (MSCA)
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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.
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