石墨炉原子吸收光谱法测定质子交换膜燃料电池(PEMFC)膜电极中铂含量

Determination of Platinum in Membrane Electrode Assembly(MEA) by Graphite Furnace Atomic Absorption Spectrometry

质子交换膜燃料电池膜电极中铂催化剂的含量对于电极的成本和性能是非常重要的 ,文章以石墨炉原子吸收光谱法测定了膜电极中铂的含量 ,探讨了石墨炉升温程序及实验方法的最佳工作条件。该方法准确、快速和简便。回收率在 97 3%～ 10 1 2 %之间 ,相对偏差小于 2 6 7%。

The contents of platinum in Membrane Electrode Assembly ( MEA) is very important to the cost of proton exchange membrane fuel cell. In this paper, the contents of platinum in MEA were determinated by graphite furnace atomic absorption spectrometry. The influences of the program for graphite furnace and the optimum conditum of experiment were systematically studied. The method is simple, rapid, accurate and practical. The result indicates that the relative standard deviation of Pt determination is less than 2.67%. The rate of recovery is 97.3%-101.2%.