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PH=9.20的Na2B4O7-NAOH缓冲溶液中，十二烷基苯磺酸钠和三乙醉胺存在下，Cd(Ⅱ)和铬黑T瓜形成配位比为1:1的紫红色配合物，基于该显色瓜的最适条件测定镉的胶束增溶分光兴度法，在最大波长560mm处表观摩乐尔系数，e=6.68*106L.cm.cn-1,镉浓度在0～8.0pg/ml范围内服从比耳定律，回归方程A=0.169+5.0*10-3Ccd(pg/ml),r=0.9996,检出限为1.0*10-12g/ml。本法用于小样中镉的测定，结果满意。
In the presence of sodium dodecyl benzene sulfonate and triethylamine drunkamine, the complex of Cd (Ⅱ) and chrome black T melon formed a purple complex with the coordination ratio of 1: 1 in Na2B4O7-NAOH buffer solution of pH = 9.20, Based on the optimum conditions for the determination of the color of melon micellar solubilization spectrophotometry, the maximum wavelength of 560mm apparent molar coefficient, e = 6.68 * 106L.cm.cn-1, cadmium concentration in the 0 ~ 8.0 Beer’s law was obeyed in the range of pg / ml. The regression equation was A = 0.169 + 5.0 * 10-3Ccd (pg / ml), r = 0.9996 with the detection limit of 1.0 * 10-12g / ml. This method is used for the determination of cadmium in the sample with satisfactory results.