用胶束增敏分光光度法测定微镍量,已有人提出Ni—Xo—CTMAB,Ni—Xo—CPB等三元络合物体系。这些体系的灵敏度较高,表观摩尔吸光系数一般可接近10~5。我们经过试验发现Ni—CAS—CTMAB—PY体系灵敏度更高,PH=11.2、λ=655nm处络合物有最大吸收峰,有色络合物显色迅速,室温下放置5分钟显色即达完全,颜色在36小时稳定不变,以试剂空白作参比,对比性好,含镍量在0—20μg/50ml内符合比尔定律。通过 Micellar spectrophotometry with micellar sensitivity spectrophotometry, Ni-Xo-CTMAB, Ni-Xo-CPB ternary complex systems have been proposed. The higher the sensitivity of these systems, the apparent molar absorptivity can generally be close to 10 ~ We have found that the Ni-CAS-CTMAB-PY system has higher sensitivity, PH = 11.2, λ = 655nm complexes have the maximum absorption peak, rapid development of colored complexes, at room temperature for 5 minutes, the color is up to complete , The color is stable at 36 hours, with reagent blank as reference, good contrast, and Beer’s law is obeyed when the content of nickel is within 0-20μg / 50ml. by