大庆水库总氮在线监测仪的比对分析

对大庆水库的总氮在线监测仪与同步实验室分析进行了比对实验,结果表明:SERES2000型总氮在线监测仪采用的分析方法与实验室采用的国家标准分析方法为同一分析方法;总氮在线监测仪的自动监测结果和实验室分析结果均具有准确度高、精密度好的特点,二者之间的相对误差范围为-11.8%～14.1%,均在允许的相对误差范围内,满足比对分析要求;总氮在线监测仪能实时掌握水源地水质变化趋势,它的投入使用为完善水质预警系统、保证监测数据的真实有效提供了科学依据.

Contrast Analyses of TN (i.e.Total Nitrogen) On-Line Monitoring Instrument in Daqing Reservoir

By comparing TN on -line monitoring instrument of Daqing reservoir with laboratory analysis at the same time, contrast test indicated that the analysis method of SERES2000 type TN on - line monitoring instrument and national standard analytical method using by laboratory was the same analysis method. Both the automatic monitoring data from TN on - line monitoring instrument and laboratory analysis data all had very high accuracy and good precision. Relative error value ranged from - 11.8% - 14.1% between them within permission, which could meet the requirement of contrast analyses. By using TN on - line monitoring instrument, the state of water quality in water source field and the state changing trend could be mastered at real time. After its having been implemented and applied, it has provided scientific basis for improving the warning system of water quality and ensuring truth and effectiveness of monitoring data.