【摘要】 等摩尔连续变化法中部分吸收光谱(C_R>nC_M)相交形成一个等色点,另一部分光谱(C_R<nC_M)则不交于该等色点。我们利用等色点吸光度值与另一部分光谱在该波长吸光度值之比,可计算出试剂纯度。方法不依金属为基准,操作简单,结果可靠。更多还原

【Abstract】 There is an isosbestic point in some absorption spectra ( CR > nCM) of the job method and other spectra ( CR < nCM ) don’t interset at the isosbestic point, when a MR complex is formed. The purity of organic indicator(R) can be calculated from ratio of absorbance of isosbestic point to that of the other spectra at this wavelength. Proposed method is simple and independent of the metal ions. Results obtained are satisfactory.更多还原