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本文首先测定溶液的原始平衡电位,然后向溶液中加入标准K_2Cr_2O_7溶液。通过测定其加入不同量时体系的电位,建立微分方程组。用微机对方程组求解即可计算出As(Ⅲ)和As(V)各自的含量。
This paper first measured the original equilibrium potential of the solution, and then added to the solution standard K_2Cr_2O_7 solution. By measuring the potential of the system when adding different amounts, the differential equations are established. Calculate the content of As (Ⅲ) and As (V) by solving the system of equations by computer.