用氨气敏电极法测定阳离子淀粉中有机氮的方法,国内尚未见报导,该法具有简便、快速、灵敏度高、选择性好等优点。本文以硒—浓硫酸消化,用氨气敏电极电位法测定淀粉中的氮含量,经与凯氏定氮法对照和t检验,证明本方法是可行的,且快速准确。 Ammonia gas sensor electrode method for the determination of organic nitrogen in cationic starch has not been reported in the country, the method has the advantages of simple, rapid, high sensitivity and good selectivity. In this paper, selenium - concentrated sulfuric acid digestion, with ammonia gas sensing electrode potential of starch in the nitrogen content, with the Kjeldahl control and t test, the method is proven to be feasible and fast and accurate.