方波极谱的研究——Ⅱ.机械式方波极谱在平面及滴汞电极上可逆反应的扩散电流方程

STUDY ON SQUARE-WAVE POLAROGRAPHY——II. THEORY OF REVERSIBLE WAVE OBTAINED ON MECHANICAL SQUARE-WAVE POLAROGRAPH

本文推导机械式方波极谱仪的可逆波电流方程得:(一)平面电极可逆波电流方程i_(机)=D√2/m+1(i_(Ⅰ)-i_(Ⅱ)√ft D=3∑0^(2)[B]+(m-4)[m∑m=3[B]+0.0939(β-1)]+(β-1)[-√2m/4-1/4√2m+0.7071][B]=√2m-2n+1-√2m-2n-√2m-2n+β+√2m-2n+β-1.

A theory of reversible wave obtained on the mechanical square-wave polarograph is proposed.1.The current obtained on plane-electrode is given by i_(M)=D√2/m+1(i_(Ⅰ)-i_(Ⅱ)√ft D=3∑0^(2)[B]+(m-4)[m∑m=3[B]+0.0939(β-1)]+(β-1)[-√2m/4-1/4√2m+0.7071][B]=√2m-2n+1-√2m-2n-√2m-2n+β+√2m-2n+β-12.The current obtained on dropping-mercury electrode is given by i_(M 100)=0.988G(i_(Ⅲ)-i_(Ⅳ))√ft G=E/0.7877 E=D/m+1 i_(M100)=0.988Gdi/dE△E√ftThe above theory has been examined experimentally.The theoretical conclusions are in good agreement with experimental data on the reduction of Bi^(3+),Tl^(+),Cd^(2+)and U^(VI).