Effect of lead accumulation in maize leaves on their chemical images created by a flow-through electronic tongue

► The maize leaves exposed to media containing Pb(II) cations. ► Analysis of the ionic composition of the leaf extracts by an electronic tongue. ► Differentiation of samples treated with solutions of different Pb(II) concentrations. ► Determination of the total Pb content in the leaf extracts carried out by ICP-OES. ► Effect of lead accumulation on the ionic composition of the leaf homogenates.