Stripping voltammetric detection of mercury(II) based on a surface ion imprinting strategy in electropolymerized microporous poly(2-mercaptobenzothiazole) films modified glassy carbon electrode.

摘要: Abstract This work reports a surface ion imprinting strategy in electropolymerized microporous poly(2-mercaptobenzothiazole) (MPMBT) films at the of glassy carbon electrode (GCE) for electrochemical detection Hg(II). The Hg(II)-imprinted MPMBT/GCE exhibits larger binding to functionalized capacity, faster kinetics and higher selectivity template Hg(II) due their high ratio surface-imprinted sites, surface-to-volume ratios, complete removal templates affinity square wave anodic stripping voltammetry (SW ASV) response is ca. 3.0 5.9 times than that direct imprinted modified GCE non-imprinted sensor, respectively; limit 0.1 nM (which well below guideline value given by World Health Organization). Excellent wide linear range (1.0–160.0 nM) good repeatability (relative standard deviation 2.5%) were obtained interference experiments showed mercury signal was not interfered presence Pb(II), Cd(II), Zn(II), Cu(II) Ag(I), respectively. These values, particularly sensitivity excellent compared favorably with previously reported methods area detection, demonstrate feasibility using prepared efficient determination aqueous environmental samples.