本文应用比色法对链霉素进行了含量测定.其反应机制为在碱性条件下链霉素与茚三酮作用产生紫色产物,在560nm波长处有最大吸收,检测极限为0.1mg/ml.本法具有简便、准确、精密度高等优点. In this paper, the content of streptomycin was determined by colorimetric method.The reaction mechanism was as follows: the product of streptomycin and ninhydrin under alkaline conditions produced a purple product with maximum absorption at the wavelength of 560 nm with the detection limit of 0.1 mg / ml This law is simple, accurate, high precision and so on.