A voltammetry sensor platform for environmental pollution detection based on simultaneous electropolymerisation of L-lysine and β-cyclodextrin

ABSTRACT

A glassy carbon electrode (GCE) modified with simultaneous electropolymerisation of L-lysine (L-lys) and β-cyclodextrin (β-CD) film (P-β-CD-L-lys/GCE) is proposed as a novel electrochemical platform for the detection of pymetrozine. The electrochemical activity of P-β-CD-L-lys/GCE towards pymetrozine was investigated using cyclic voltammetry experiments in 0.1 M H₂SO₄. The potential utility of the sensor was demonstrated by applying it to the analytical determination of pymetrozine concentration using linear sweep voltammetry. The linear in the range of 4.0 × 10⁻⁸ to 1.0 × 10⁻⁶ mol L⁻¹. The detection limit of pymetrozine was found to be 1.3 × 10⁻⁸ mol L⁻¹ (S/N = 3). Using this method, we successfully got satisfactory results of pymetrozine in real sample analysis. This work promoted the potential applications of amino acid materials and β-cyclodextrin in environmental analytical chemistry.

KEYWORDS:

• Pesticides
• voltammetric sensor
• L-lysine
• β-cyclodextrin

Disclosure statement

No potential conflict of interest was reported by the authors.