研究了低压离子色谱(LPIC)分离-柱后鲁米诺化学发光(CL)检测方法,并分离测定了Cu2+,Co2+,Cr3+,Fe2+,Mn2+等5种过渡金属离子.以草酸-柠檬酸混合溶液作为洗脱液,Luminol-H2O2-Mn+作为化学发光检测体系,对过渡金属离子进行在线检测.测定的线性范围分别为(mg*L-1):Co2+,0.001～0.1; Cu2+,0.1～6; Mn2+,0.06～4; Fe2+,0.03～5; Cr3+,0.025～1.检测限分别为(μg*L-1):Co2+,0.85; Cu2+,85; Mn2+,42; Fe2+,21; Cr3+,20.利用此法测定了维生素B12中Co2+以及人发样中Cu2+,Mn2+,Cr3+,Co2+和Fe2+等离子的含量,结果与原子吸收法所测值基本吻合.
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