原子捕集是一种在火焰中浓缩待测原子的预富集技术,它能提供极高的原子浓度供原子吸收测量,因而显著提高火焰法的灵敏度。原子捕集技术首先由Stephens提出,West等人作了较多工作。本文系统研究了各种条件对镉的捕集和释放的影响;对共存元素的干扰和试样分析进行了探讨。 Atomic capture is a preconcentration technique that concentrates the atoms to be detected in a flame. It provides extremely high atomic concentrations for atomic absorption measurements and therefore significantly increases the flame sensitivity. Atomic capture technology was first proposed by Stephens and West et al. Did more work. This paper systematically studied the effects of various conditions on the capture and release of cadmium; the interference of coexisting elements and the sample analysis were discussed.