氨气敏电极测氨基酸口服液中的总氮含量

食品科学 ›› 2000, Vol. 21 ›› Issue (5): 60-63.

氨气敏电极测氨基酸口服液中的总氮含量

付大友, 袁东, 曹绍萍

四川轻化工学院材料与化学工程系

出版日期:2000-05-15 发布日期:2011-11-30

The Determination of Nitrogen Content of Amino acid oral liquid by Ammonia Gas Sensing Electrode

FU Da-You, YUAN Dong, CAO Shao-Ping

Online:2000-05-15 Published:2011-11-30

摘要/Abstract

摘要： 采用ＰＳＸ－５数字型离子酸度计；５０１型氨气敏电极；在ｐＨ＞１２的条件下直接测定平衡电位值。由于电极电位的重现性较差，影响了分析的准确度．本实验采用了两点标准与样品同步进行测试的方案；与回归曲线相配合，可快速、简便、精确地测定氨基酸口服液中总氮含量；此法的准确度和精密度都较为理想。

关键词: 氨气敏电极, 氨基酸口服液, 总氮

Abstract: PSX-5 Expandable Ion Analyzer and 501 Ammonia Gas Sensing Electrode were used to direct measurement of equilibrium electric potential at pH>12. The repetition of the same electrode potential was poor, thus was affected the precision of analysis. The experiment determined double standard solutions and samples, then used linear regression and Described working Curve determined Nitrogen Content of Amino acid oral liquid. The result shows that the method is exact、quick、 simple and convenient, and accuracy and precision is very ideal.

Key words: Ammonia Gas Sensing Electrode, Amino acid oral liquid, Total Nitrogen

付大友, 袁东, 曹绍萍. 氨气敏电极测氨基酸口服液中的总氮含量[J]. 食品科学, 2000, 21(5): 60-63.

FU Da-You, YUAN Dong, CAO Shao-Ping. The Determination of Nitrogen Content of Amino acid oral liquid by Ammonia Gas Sensing Electrode[J]. FOOD SCIENCE, 2000, 21(5): 60-63.

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