石墨炉原子吸收光谱法具有灵敏度高、取样量少、化学预处理简单等优点,广泛用于各个领域。但在许多场合,由于样品中基体的影响,使其优越性的发挥受到限制。因此,对痕量元素的分析带来一定的困难。Lund等人提出用电沉积与石墨炉原子吸收分析相结合的方法,达到分离基体和浓缩待测元素的目的。Hoshino等人用钨丝作铅和镉的研究,灵敏度提高一个数量级,抗基体干扰能力也大有改善。本文选用钨丝作阴极,铂丝作阳极,研究了铅的电沉积条件及其对测定灵敏度的影 Graphite furnace atomic absorption spectrometry has the advantages of high sensitivity, small sample volume, simple chemical pretreatment, and is widely used in various fields. However, in many cases, due to the influence of the matrix in the sample, its superiority is limited. Therefore, the analysis of trace elements bring some difficulties. Lund et al proposed the combination of electrodeposition and graphite furnace atomic absorption spectrometry to separate the matrix and concentrate the analyte. Hoshino et al. Used tungsten wire for lead and cadmium studies, which increased sensitivity by an order of magnitude and improved resistance to matrix interference. In this paper, tungsten wire as the cathode, platinum wire as the anode, the electrodeposition of lead and its sensitivity to the test