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用含１０％聚酰胺的修饰碳糊电极研究了测定色氨酸和酪氨酸的伏安法，发现在０．２ｍｏｌ／Ｌ盐酸－醋酸钠底液中色氨酸和酪氨酸有良好的氧化峰响应。结合２．５次微分技术，两种氨基酸的检测浓度线性范围良好，色氨酸和酪氨酸的相对标准偏差分别为５．２％和７．０％，检测限分别为０．０２４μｍｏｌ／Ｌ和０．０３４μｍｏｌ／Ｌ。检测特性比文献报道有较大的改善。文中对电极过程进行了讨论。
The voltammetric method for the determination of tryptophan and tyrosine was studied with a modified carbon paste electrode containing 10% polyamide. It was found that tryptophan and tyrosine were good in 0.2 mol / L hydrochloric acid-sodium acetate Oxidation peak response. Combined with 2.5-fold differential technique, the linear range of the two amino acids was good. The relative standard deviations of tryptophan and tyrosine were 5.2% and 7.0%, respectively. The detection limits were 0.024μmol / L And 0.034 μmol / L. Detection characteristics than the literature has greatly improved. The paper discusses the electrode process.