We demonstrated here for the first time the coupling of BiSPCNTE and automated SIA-ASV. Such proposed method provides rapid, low-cost, and highly sensitive quantitation method for Pb(II), Cd(II), and Zn(II). SPCNTEs exhibit superior sensitivity for heavy metals detection to SPCEs. The detection limits of our method using Bi-SPCNTEs (Sbl/S = 3) were lower than the previous method using Bi-SPCEs. An automated SIA-ASV coupled with Bi-SPCNTE
can analyze 14 samples h−1 with high precision and low sample consumption over manual and/or batch analysis method. The proposed method was successfully ascertained via determination of g L−1 concentration levels of Pb(II), Cd(II) and Zn(II) in A. paniculata items collected from south area and local markets in Thailand.