摘要
It is important to develop methods to determine microbial toxins at trace levels since these toxins are ubiquitous commonly found in water and foods,and pose potential threats to both human health and ecosystem safety.Taking the advantages of ultrahigh electron-transfer capability,extra-large surface area and easily functionalized ability,the graphene-based nanocomposites have been employed to fabricate electrochemical biosensors including immunosensors and aptasensors for detecting microbial toxins with high sensitivity.The specificity and selectivity of the electrochemical biosensors for targeting toxins can be achieved by combining graphene nanocomposites with antibodies and/or aptamers.The graphene nanocompositebased electrochemical biosensors could become a promising technique in the detection of microbial toxins for public and environmental health protection.
