喷泉产生的空气负离子及其影响因素的研究

［目的］了解喷泉产生的空气负离子情况。［方法］用空气离子测定仪对空气负离子进行测定。［结果］对两处喷泉的８天测定数据表明，空气负离子的最高浓度分别为９３６２个／ｃｍ＾３和６７１４０个／ｃｍ＾３，最低分别为２２０个／ｃｍ＾３和８５８个／ｃｍ＾３，喷泉开时的不同状态可对周围环境中的空气负离子产生直接影响；空气负离子的浓度同喷泉的规模成正比（Ｐ〈０．０１）；同一喷泉在７月份产生的空气负离子浓度高于５月份

Study on Air Negative Ions Produced by Fountain and Its Effecting Factors.

Objective]To detect and analyse the concentrations of air negative ions produced by fountain in operation [Methods]The concentrations of air negative irons were detected by air ions analyser [Results]The data obtained from 8-day determination of air negative ions generated by two fountains showed that:the concentrations of air negative ions from the two observed fountains were 9362/cm 3 and 67140/cm 3 of the highest levels,220/cm 3 and 858/cm 3 of the lowest levels respectively The effects of fountains in different operation state on the levels of air negative ions in the surrounding environment could be directly observed The levels of air negative ions showed positive variation with the scale of fountains ( P <0 01) The concentrations of air negative ions produced by a same fountain in July was higher than that in May ( P <0 01) No significant differences was observed between the levels of air negative ions detected at 30,60 and 90 minutes of different operation times ( P >0 05) The concentrations of air negative ions negatively correlated with the distances from the fountains to sampling locations [Conclusion]A great member of air negative ions,the levels of which associated with the scale of fountain,the operating state as well as the meterological condition in a certain degree,could be produced by fountain in operation