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在ｐＨ４．３０的ＨＡｃ－ＮａＡｃ缓冲液中，Ａｕ（Ⅲ）与５－Ｂｒ－ＰＡＤＡＰ经沸水浴加热形成１：Ｉ紫色配合物，在示波极谱仪上－０．６０Ｖ（ｖｓ，ＳＣＥ）产生一灵敏的配合物吸附波。线性范围５．０×１０￣（－８）～２．００×ｌ０￣（－６）ｍｏｌ／Ｌ检出限２．０×１０８ｍｏｌ／Ｌ．研究３０多种离子的干扰及分离条件。用聚氨酯泡沫塑料分离金用于矿样中金的测定，结果良好。
Au (Ⅲ) and 5-Br-PADAP were heated in a boiling water bath to form a 1: I purple complex in pH4.30 HAc-NaAc buffer, and -0.60V (vs, SCE) Produce a sensitive complex adsorption wave. The linear range of 5.0 × 10 ~ (-8) ~ 2.00 × l0 ~ (-6) mol / L detection limit of 2.0 × 108mol / L. Research more than 30 kinds of ions interference and separation conditions. Polyurethane foam with gold for the determination of gold in the sample, the results are good.