对于镉-铁试剂的二元配合物已有研究,而对在此体系中加入表面活性剂的研究尚未见报道。我们对镉-铁试剂-CTMAB体系进行了研究,由于加入了CTMAB,荧光强度提高了六倍多。我们用平衡移动法测定了三元配合物的组成,研究了共存物质的干扰,拟定了水样和发样中微量镉的测定方法,灵敏度可达2×10~(-3)μgCd/ml。 For the binary complexes of cadmium-iron reagents have been studied, and to this system to add surfactant has not been reported. We studied the cadmium-iron reagent-CTMAB system and increased the fluorescence intensity by more than six times due to the addition of CTMAB. We determined the composition of the ternary complex by the equilibrium shift method, studied the interference of coexisting substances, and developed a method for the determination of trace cadmium in water and hair samples with a sensitivity of 2 × 10 -3 μgCd / ml.