In the technique presented here, the
electrode surface is a single receiver of a micro-volume of sample,
requiring no further treatment than the evaporation.
2. Experimental
All reagents were of analytical grade. Silver standard solutions (9.27 ×
10−6, 1.854 × 10−5, 4.635 × 10−5, 9.27×10−5 mol L−1) were prepared
by diluting a Certipur Merck standard solution (9.27 × 10−3 mol L−1)