摘要
氨氮是指水中以游离氨和铵离子形式存在的氮。其中,非离子氨浓度无法直接测量得到,需要将铵离子浓度和氨氮浓度通过不同的检测设备分别测量出来并加以计算间接获得。通过应用非离子氨百分比浓度表只需要测量铵离子浓度或氨氮浓度就可以换算得到其它两个参数。本文用Matlab软件来对非离子氨百分比浓度表中的数据进行双三次插值方法曲面拟合,利用VC软件编程实现对Matlab拟合好的连续的曲面的调用,通过下位机传输过来的温度和pH值可得到对应的非离子氨百分比浓度,再通过检测到的铵离子或者氨氮浓度即可获取到其它两个参数信息。
Ammonia includes ammonium ions and non-ionic ammonia.Among them,the non-ionic ammonia concentration can not be measured directly, ammonium ion concentration and ammonia concentration need to be calculated indirectly.By applying the percentage concentration of unionized ammonia table,we only need to measure the concentration of ammonium ion or ammonia to convert to the other two parameters.In this paper, we used Matlab software for surface fitting,used VC software programming calls for continuous surfaces,and used the temperature and pH value from next crew to obtain corresponding percentage of unionized ammonia concentration,then used the concentration of ammonium ions or ammonia to obtain the other two parameter information
出处
《现代科学仪器》
2013年第6期98-101,共4页
Modern Scientific Instruments
关键词
非离子氨浓度
氨氮浓度
铵离子浓度
Non-ionic ammonia concentration
Ammonia concentration
The concentration of ammonium ion
