氨氮含量的多少是衡量饲料质量优劣的重要指标之一。动物饲料中的氨氮含量超过00μg/ml,动物食用后,就将影响动物体内的正常生理活动,如果水中超过这个含量,水中的动物就无法生存。因此,动物饲料中的氨氮含量都有一定的规定。氨氮的分析方法通常采用容量法、凯氏法和光度法,但操作烦琐,时间较长,灵敏度亦较难满足实际需要,而且测定范围也不够宽。我们采用氨气敏电极测定了鱼粉饲料中的氨氮量,回收率平 The amount of ammonia nitrogen is one of the important indicators to measure the quality of feed. Animal feed in the ammonia content of more than 00μg / ml, animal consumption, it will affect the normal physiological activity of animals, if the water exceeds this level, water animals can not survive. Therefore, animal feed in the ammonia content has certain requirements. Ammonia nitrogen analysis methods commonly used capacity method, Kjeldahl and photometric method, but cumbersome operation, longer time, the sensitivity is also more difficult to meet the actual needs, and the measurement range is not wide enough. We use ammonia gas sensing electrode to measure the amount of ammonia nitrogen in fish meal feed, the recovery rate is flat