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用脱乙酰壳多糖化学修饰电极为工作电极，阳极溶出伏安法测定痕量金。在ｐＨ１～２的ＫＣｌ－ＨＣｌ底液中，起始电位０．２０Ｖ，终止电位１．３０Ｖ，富集时间５ｍｉｎ，以０．１Ｖ／ｓ扫速阳极溶出，峰电位在１．００Ｖ（ｖｓ．ＳＣＥ），Ａｕ（Ⅲ）浓度在０．１０ｍｇ／Ｌ～１０ｍｇ／Ｌ范围内与峰高呈线性关系。在富集１０ｍｉｎ时，可检测０．０２５ｍｇ／ＬＡｕ，大大提高了测定灵敏度，用于矿样测定，无需分离，结果满意。用紫外光谱和拉曼光谱研究了该法的电极过程机理。
Using chitosan chemically modified electrode as the working electrode, anodic stripping voltammetry was used to determine trace gold. In pH1 ~ 2 KCl-HCl solution, the initial potential of 0.20V, the termination potential of 1.30V, enrichment time 5min, 0.1V / s sweep speed anodic dissolution, peak potential at 1.00V (vs. SCE). The concentration of Au (Ⅲ) showed a linear relationship with the peak height in the range of 0.10 mg / L to 10 mg / L. In the enrichment of 10min, 0.025mg / LAu can be detected, greatly improving the assay sensitivity for the determination of ore samples, without separation, the results are satisfactory. The electrode process of this method was studied by UV and Raman spectroscopy.