10种绿化植物叶片对铅·锌吸收能力的研究

［目的］研究江西省吉安市不同区域绿化植物对大气铅、锌污染物的吸收能力。方法］采用原子吸收法，测定6个区域10种绿化植物叶片铅、锌含量。［结果］在所调查6个区域中，10种绿化植物叶片铅、锌含量较高的在井冈山大道，含量最低的在井冈山大学校园内，各区域不同植物叶片的铅、锌含量差异显著。10种绿化植物对大气铅、锌污染物均具有一定的吸收净化能力，并依污染物和植物种类的不同差异明显：对铅吸收量最高的植物为圆柏和雪松，分别为4.84 mg/kg 和4.57 mg/kg，最低为海桐，为0.38 mg/kg；对锌吸收量最高的植物为日本女贞，为37.58 mg/kg，最低为小叶黄杨，为11.08 mg/kg。［结论］井冈山大学、天龙花园和白鹭洲公园为铅、锌无污染区；污水处理厂、松吉化工有限公司为铅、锌轻度污染区；井冈山大道为铅中度污染区、锌轻度污染区。

Study on the Absorption Ability of Leaves of 10 Kinds of Greening Plants to Pb and Zn

Objective]Absorption ability of greening plants leaves to Pb and Zn in different regions in Jian City of Jiangxi Province was studied.Method] Using atomic absorption method,the contents of Pb and Zn in 10 kinds of greening plants was measured in 6 regions.Result] The results showed that content of Pb and Zn in 10 kinds of greening plants in Jinggangshan Road was the highest,and the lowest in Jinggangshan University,they had obvious difference among 6 different regions.The plants could absorb Pb and Zn po...