喷泉周围空气负离子变化规律的研究

目的]研究喷泉周围空气负离子的变化规律。方法]以江西农业大学校区内的喷泉为研究对象,对其周围空气负离子水平进行测定。结果]喷泉开启后空气负离子水平显著提高。喷泉关闭后5 min,其周围空气负离子水平与开启前基本持平。喷泉开启后,距喷泉中心不同距离处的空气负离子水平差异较大,其由大到小依次为:10 m>15 m>20 m>25 m,其中,距喷泉中心10 m处的空气负离子水平与距喷泉中心202、53、0 m处的空气负离子水平存在极显著差异(P<0.01)。随着距喷泉中心距离的增大,空气负离子水平降低,降低的程度随之变小。结论]随着喷泉水压大小的周期性变化,空气负离子水平呈相应的节律性变化。

Study on Change Law of Negative Air Ions around the Fountain

Objective] The aim was to study the change law of the negative air ions around the fountain.Method] With the fountain in the Jiangxi Agriculture University as research object,the air anion concn.around the fountain was detected.Result] The air anion concn.was increased significantly after the fountain opened.After the fountain being closed for 5 min,the air anion concn.was basically equivalent to that before it opened.After the fountain opened,there was great difference among the air anion concn.in the different areas from the fountain center and the order was 10 m>15 m>20 m>25 m.Among them,there was very significant difference between the air anion concn.at 10 m from the fountain center and that at 20,25 and 30 m(P<0.01).The air anion concn.was decreased and the decreased degree diminished with the increase of the distance from the fountain center.Conclusion] The air anion concn.showed the corresponding circadian change following the periodic change of the fountain hydraulic pressure.