南昌市降水自动监测与手工采样监测对比分析

The analysis to the value of pH and EC from precipitation automatic moni toring and manual collection monitoring

南昌市环境监测站引进了一套降水自动监测系统,该系统由一个中心站及五台AR-107型自动监测仪(子站)组成。通过对AR-107型降水自动监测仪及手工样监测结果间的对比实验发现,自动监测与手工采样监测所获得的pH值和电导率值差异明显,并对这种差异进行了分析探讨,认为干沉降是这种差异存在的主要原因。

Nanchang Environmental Monitoring Station imports a precipitation automatic monitoring system. This system is composed of a center and five monitoring sub-stations. According to the comparison with the value of pH and EC from the automatic monitoring system and manual collection monitoring , there is a distinct difference. We state the dry dust sedimentation is the main cause of the difference.