在表面活性剂的存在下,镍、钴单独与漂蓝6B(ECAB)和4,4′-联吡啶形成四元络合物显色反应,我们已进行了研究,它们均有很高的灵敏度。但由于彼此性质相近,相互干扰严重,在实际工作中往往遇到镍、钴共存下测定问题。因此,本文进一步研究了镍或钴-ECAB-4,4′-bipy-CTMAB体系的多元络合物的双波长吸光光度法同时测定的有关条件及干扰情况。实现了样品中镍和钴共存时双波长吸光光度法的测定,结果满意。 In the presence of surfactants, nickel and cobalt alone form a quaternary complex color reaction with bleached blue 6B (ECAB) and 4,4’-bipyridyl, and we have performed studies that all have high sensitivity . However, due to their similar nature and serious interference with each other, they often encounter the measurement problems in the coexistence of nickel and cobalt in practical work. Therefore, we further studied the conditions and interference conditions for the simultaneous determination of multiple complexes of nickel or cobalt-ECAB-4,4’-bipy-CTMAB by dual-wavelength spectrophotometry. The dual-wavelength absorption spectrophotometry was achieved when the sample coexisted with nickel and cobalt. The results were satisfactory.