Laboratory study demonstrates electrochemical detection of formaldehyde in fish samples via polydopamine-coated steel, highlighting a low-cost food safety screening method.
Electrodeposited polydopamine (pDA) on a stainless steel substrate was developed for electrochemical sensing of formaldehyde in fish samples. Experimental conditions such as influence of scan rate, pH, and concentration were optimized. The pDA modified electrode was sensitive enough to detect formaldehyde at a potential of 0.8 V in an acidic aqueous solution. The lLinear dynamic range for the detection of formaldehyde was in the range of 0.43 to 1.60 μ m under optimal conditions. The detection and quantitation limits were found to be 0.14 and 0.43 μ m respectively. The method was effectively employed for the detection of formaldehyde in fish samples.
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Philip et al. (2021) studied this question.
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