摘要
饲料中粗蛋白含量测定一直是重要的检测指标,硫酸铵回收率的测定是饲料粗蛋白含量测定过程中检测蒸馏和滴定系统是否达到要求的重要质控指标。本文通过两名检测人员对硫酸铵回收率测定过程中可能出现的所有影响因素进行了全面分析和测定比较,结果表明在规范操作的条件下,硫酸铵是否干燥、过量加碱和过量的吸收液、蒸馏时间过长、不同的取样方式均等均不会对硫酸铵回收率产生较大的差异性,通过测定分析确保本所粗蛋白含量的准确度,为饲料中粗蛋白硫酸铵回收率的测定提供了基础。
The determination of crude protein content in feed has always been an important detection index.The determination of ammonium sulfate recovery is an important quality control index to detect whether the distillation and titration system meets the requirements in the determination of crude protein content in feed.The two inspectors comprehensively analyzed and compared all possible influencing factors in the determination of ammonium sulfate recovery.The results show that under the standard operation conditions,whether ammonium sulfate is dry,excessive alkali addition and excessive absorption solution,too long distillation time and different sampling methods will not have a great difference on the recovery of ammonium sulfate.The accuracy of crude protein content is ensured through determination and analysis,which provides a basis for the determination of crude protein ammonium sulfate recovery in feed.
作者
杨美兰
查飞
吕德友
崔灿
李红林
YANG Mei-lan;ZHA Fei;LV De-you;CUI Can;LI Hong-lin(Veterinary Drug and Feed Supervision Institute of Qujing,Qujing Yutman 655000,China)
出处
《畜牧兽医杂志》
2022年第1期19-21,共3页
Journal of Animal Science and Veterinary Medicine
关键词
饲料
粗蛋白
硫酸铵
回收率
测定
分析
feed
crude protein
ammonium sulphate
rate of recovery
determination
analysis
