【作者】 马辉； 虎燕； 王水锋； 郭敬华；

【Author】 MA Hui~1 HU Yan~2 WANG Shuifeng~1 GUO Jinghua~1 (1 Analytical and Testing Center,Beigjing Normal University,100875,Beijing,China; 2 School of Chemistry,Beijing Normal University,100875,Beijing,China)

【机构】 北京师范大学分析测试中心； 北京师范大学化学学院；

【摘要】 植物的叶面滞尘在一定程度上可以反映一个地区的环境质量,因而,滞尘的成分已越来越为环境工作者所关注。文章对北京不同地区的典型植物叶面滞尘进行了调研。利用 X-射线衍射仪对滞尘中的无机盐进行了定性相分析,并使用基体冲洗法(K 值法)进行了定量相分析。分析结果表明:滞尘成份与采样地点的环境条件有关。对于同种植物,叶片离地面越近,叶面滞尘中沙石类物质含量越高;背公路面样品的无机盐含量高于朝公路面的。同种植物的滞尘量为首钢地区最高,北师大校园次之,定陵最低。测试树种滞尘能力由高到低依次为:柏类、杉类、松类。更多还原

【Abstract】 The foliar absorbed dust somehow reflects the environmental quality of the related area and has drawn the wide attention of environmental researchers.In this work,the absorbed dust of the typical plants in Beijing was invested.The qualitative and quantitative analysis was performed with a X-ray diffractmeter and ’Number-K method’ was adopted in the quantitative test.The results showed that the amount of the dust absorption and its component was differentcorresponding to the different environmental conditions in a sample collected area.On the same species of trees,the content of sand in the absorbed dust was higher as the leaves became nearer to the ground.It was interesting to find that the amount of inorganic salts was much lower on the leaves which were living towards to a highway than those facing away from a highroad.In the same area,the dust retention ability was not the same among the three species of trees(cypress,fir and conifer),cypress was higher and conifer was lower.Comparing amounts of absorbed dust among the three areas[Capital Steel Company(CS),Beijing Normal University(BNU)and Ding Mausoleum (DM)],we found that samples collected in CS were higher and lower in DM.更多还原