ninhydrin reaction

英

美

n. （水合）茚三酮反应

This paper has explored the experimental condition of ninhydrin colorimetry measuring the amino nitrogen content of soy sauce such as pH, maximum absorption wavelength, reaction time, color reagent doses etc. and got the optimum experiment conditions.
本文对茚三酮比色法测定酱油氨基氮含量的试验条件，如pH、最大吸收波长、反应时间、显色剂用量等进行了探讨，提出了最佳试验方案。
Its ninhydrin reaction was negative, but after acid hydrolysis, its ninhydrin reaction and biuret reaction were positive.
茚三酮反应呈阴性，用酸水解后茚三酮反应和双缩脲反应呈阳性。
The ninhydrin reaction was negative, but when the preparation was hydrolyzed with 12N HC1 at 110 ℃ for 24h, it became positive.
茚三酮反应呈阴性，但在110℃酸解后反应又呈阳性。
Results The results of the biuret reaction and ninhydrin reaction were positive.
结果茚三酮反应和双缩脲反应呈阳性，海生素注射液中氮含量不低于0.4mg。
Determination Activity of Choriogonadotropin by Acidic Ninhydrin Reaction A Method for Adding Ninhydrin Directly to Developing Agent
酸性茚三酮法测人绒毛膜促性腺激素的效价茚三酮直接加入展开剂显色的探索