食品科学 ›› 2005, Vol. 26 ›› Issue (5): 198-200.

• 分析检测 • 上一篇    下一篇

离子选择性电极法测定航天加银水中的银离子含量

 朱德兵, 黄纪明, 白树民   

  1. 航天医学工程研究所
  • 出版日期:2005-05-15 发布日期:2011-09-19

Assay Method of Ion-selective Electrode on the Content of Silver Ion in Drinking Water for Spaceflight

 ZHU  De-Bing, HUANG  Ji-Ming, BAI  Shu-Min   

  1. Institute of Space Medico-Engineering
  • Online:2005-05-15 Published:2011-09-19

摘要: 使用银离子作为航天饮用水的消毒剂,其含量直接影响航天饮水的卫生安全。本文采用银离子选择电极分析法,再配以适合的离子强度缓冲溶液,可快速准确地测定航天加银水中银离子的含量。测定相对误差为3.4%,变异系数为1.3%,加标回收率平均值为105.4%,并分析了测定时间、温度和pH值对测试结果的影响。

关键词: 离子选择性电极, 航天, 饮用水, 银离子

Abstract: The content of silver ion affects directly on hygienic safety of drinking water for spaceflight when it is used as disinfectant. The method of silver ion-selective electrode accompanied with ISA can exactly assay the content of silver ion in drinking water for spaceflight rapidly. The relative error is 3.4 percent and CV is 1.3 percent and reclaim rate is 105.4 percent on test. It is also discussed that time and temperature and pH would have effects on result of testing.

Key words: ion-selective electrode, spaceflight, drinking water, silver ion