对于干扰元素共存体系,如何克服干扰,进行体系中各元素含量的测定,是分析化学中既有理论意义又有实际价值的课题。分离、掩蔽以及双波长分光光度法等都是一些行之有效的方法。本文所介绍的当量溶液法,试图对两个相互干扰组分的体系不进行分离而同时进行测定。一、理论设两组分 M,N 与试剂 R(电荷表示从略,下同)形成定组成络合物 M_mR_i 和 N_nR_j,并为有色络合物。 For the interference element coexistence system, how to overcome the interference and determine the content of each element in the system is a topic that has both theoretical and practical significance in analytical chemistry. Separation, masking and dual-wavelength spectrophotometry are some effective methods. This article describes the equivalent solution method, trying to interfere with the two components of the system without separation and determination. First, the theory set the two components M, N and reagent R (charge indicates a little omitted, the same below) to form a fixed composition M_mR_i and N_nR_j, and a colored complex.