挥发性有机物在线监测在饮用水源地预警监测中的应用

摘要

挥发性有机物(VOCs)在线分析仪通过在线集成的方式接入水质自动监测站,采用动态吹脱捕集气相色谱法快速分析.具有线性好、检出限低、精密度高、准确度好等特点.并在上下游的比对监测中具有良好的可比性、一致性和连续性.初步探索了VOCs预警监测的方法,并对预警阈值的设定进行了探讨.%in this application,the volatile organic compounds( VOCs)online analyzer,which used the dynamic purge and trap gas chromatography analysis,was integrated into the automatic monito-ring station. The monitored results showed good linearity,low detecting limit,high precision,and good accuracy,and in the comparison for the upstream and downstream monitoring,a good compara-bility,consistency and continuity was observed. In this paper,we also explored the methods of early-warning monitoring for VOCs,and discussed the setting of early-warning threshold.