南京林业大学学报(自然科学版) ›› 2007, Vol. 31 ›› Issue (04): 73-76.doi: 10.3969/j.jssn.1000-2006.2007.04.016

• 研究论文 • 上一篇    下一篇

腐殖质对Cu2+和Pb2+的吸附特性

朱丽珺1,张金池2*,宰德欣1,姜姜2,王忺2   

  1. 1. 南京林业大学信息科学技术学院, 江苏 南京 210037; 2. 南京林业大学森林资源与环境学院, 江苏 南京 210037
  • 出版日期:2007-08-18 发布日期:2007-08-18

Study on the Adsorption of Heavy Metal Cu2+, Pb2+by Humus

ZHU Li-jun1, ZHANG Jin-chi2*, ZAI De-xin1, JIANG Jiang2, WANG Xian2   

  1. 1. College of Information Science and Technology Nanjing Forestry University, Nanjing 210037, China; 2. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
  • Online:2007-08-18 Published:2007-08-18

摘要: <正>利用AFLP技术,对65个菊花品种进行了遗传多样性分析。选用6对多态性高、分辨力强的引物组合分别对供试材料的基因组DNA进行扩增,共获得244条清晰可辨的谱带,其中多态性带178条,多态位点百分率达72.95%,揭示了菊花栽培种质丰富的遗传多样性。对AFLP扩增结果采用UPGMA法进行聚类分析,多数瓣型相同的菊花种质表现出较为密切的亲缘关系,地域来源与聚类结果也有一定程度的相关性,而花色与聚类结果无明显的相关性。

Abstract: The adsorptive behavior of Pb2+ and Cu2+ by humus was investigated. The result showed that the humus had a high adsorptive ability for Pb2+ and Cu2+ but there were significant difference. The humus has a much higher adsorptive ability on Pb2+ than on Cu2+. The adsorption isotherms of Cu2+ conform to Langmuir-equation was better than Freundlich-equation, but of Pb2+ both was well. According to the langmuir model, the maximum adsorption amount of Pb2+ and Cu2+ was 84.15mg/g and 13.09mg/g respectively. The former was 6.4 times of the latter. The pH value was the main factor affecting adsorption, humus at higher pH had a larger adsorption ability. The analysis of IR spectrum indicated that adsorption of Pb2+ and Cu2+ by humus caused the combination of carboxyl groups and hydroxy with heavy metal.

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