不同功能区空气负离子的监测分析

监测了西宁地区不同功能区空气负离子状况，以公园游览区空气负离子浓度最高，平均３５８个／ｃｍ＾３；工业区最低，平均浓度２５９个／ｃｍ＾３。各功能区空气负离子浓度明显不同，Ｐ〈０．０１。用空气负离子浓度、空气离子单级系数和安培空气质量评价指数评价各功能区空气质量，从好到差依次为：公园游览区、生活居住区、商业交通繁忙区、工业区。３种评价指标结果相同，符合一般规律。

The Determination and Evaluation of the Negative Air Ions

The state of negative air ions in the different functional areas was reported. The negative air ions are the highest in the parks and touristspot and the lowest in the industrial quarter. It is significant difference among four types of functional areas. The concentration of negative air ions and values of q and CI use to evaluate the quality of atmosphere in the different functional areas. The results from each type of areas are arranged from good to poor as follow: The park and touristspots,the living and residential quarters,the business district and areas of high traffic density,and the industrial quarter. The results of their evaluation index were the same and conform to a rule.