Determination of nitrate based on the increase of electrical conductivity of polyacetylene film in acidified nitrate solutions

Abstract The electrical conductivity of polyacetylene, prepared as a free-standing film, changes drastically when treated with aqueous solutions of nitrate in the presence of sulphuric acid (5.7 M). Linear calibration plots are obtained for 2–40 × 10 −3 M nitrate. Common non-oxidating ions do not interfere.