TIAN Li, SHI Libin, AN Xuesong, et al. Test method for trace total organic carbon content in water vapor[J]. Thermal power generation, 2013, 42(9): 92-94.
TIAN Li, SHI Libin, AN Xuesong, et al. Test method for trace total organic carbon content in water vapor[J]. Thermal power generation, 2013, 42(9): 92-94.DOI:
电厂水汽中痕量TOC测量方法研究
摘要
针对电厂锅炉给水中总有机碳(TOC)测量的特点
提出采用紫外氧化-电导检测痕量TOC的新方法
确定影响测量的关键因素
并测试其准确度及精密度。运用该方法对TOC含量为0~500μg/L的水样进行了测定
结果表明其加标回收率在95%~103%
测量标准偏差在2%~5%
具有良好的准确度及精密度。该方法操作简便
易于实现现场在线监测。
Abstract
According to the measurement characteristics of total organic carbon(TOC)content in feedwater
a new method using ultraviolet oxidation combined with conductance to detect the trace TOC content was put forward.Key factors affecting the measurement were determined
and the accuracy and precision of this method were tested.This method was applied to detect the water sample with TOC content from 0μg/L to 500μg/L.The results showed that
the recovery rate of this method was between 95% and 103%
and the measurement standard deviation was between2% and 5%
indicating this method had a high accuracy and precision.Therefore
this method was easy to realize and can realize online detection in field.