Abstract:

Content of air negative ion is one of the important indices characterizing air quality.This study first presents a technical system for monitoring air negative oxygen ion based on the monitoring pilot of seven cities at national scale.The technical system includes:(1) designing and planning,construction and code for monitoring fields,(2) requirements of hardware,software and calibration for monitoring devices,(3) requirements of monitoring indices,data sampling,transferring,store and their file names,data processing and statistics,and requirements of data averages and its validities,(4) grade classification of content of air negative oxygen ion,(5) content,time and platform of outcome releases,(6) automatic check of software,manual check of data,devices maintenance at monitoring sites,(7) assessment and recommendations.This system will be of important significance to guide,standardize and speed up the monitoring of air negative oxygen ion in China.

Key words: air negative oxygen ion, monitoring technical system, grade classification of content, system maintenance