杠柳不同部位无机元素的分布及富集特征研究  

Study on distribution and enrichment characteristic of inorganic elements in different fractions of Periploca sepium Bge.

作　　者：李国辉[1] 张春艳 李天祥[1] 李庆和[1] 张伯礼[1] 

机构地区：[1]天津中医药大学,天津300193 [2]天津市滨海新区塘沽中医医院,天津300450

出　　处：《天津中医药》2014年第12期756-759,共4页Tianjin Journal of Traditional Chinese Medicine

基　　金：天津市科技支撑计划项目(10ZCZDSY12400);第4次全国中药资源普查天津试点:生多调查(环)

摘　　要：[目的]测定3种植物形态(藤本、灌木、蔓生灌木)杠柳根皮、茎皮、根际土壤中Mn、Cu、Zn、Fe、K、Ca、Mg共7种元素的含量,考察杠柳不同部位各元素的分布及富集特征。[方法]电热板湿法消解样品,火焰原子吸收法测定各元素含量。[结果]根皮、茎皮中各元素含量差异较大,但大小顺序均为K>Ca>Mg>Fe>Mn>Cu>Zn;元素Zn、Fe、K、Ca在两部位中的分布具较明显差异性,Zn、K、Ca在茎皮中有较多分布,而根皮中有更多的Fe;根际土壤中元素含量大小顺序为Fe>K>Ca>Mg>Mn>Zn>Cu,杠柳生长土壤质量较优;根皮、茎皮对Cu、Ca富集性较强,K在茎皮中有一定的富集。[结论]明确了杠柳根皮、茎皮中7种元素的含量、分布及富集特征,提供了杠柳植物形态分为两类的数据支撑,首次提出杠柳作为铜污染区土壤修复植物的可能性,为完善杠柳的生态学等基础研究奠定了基础。[Objective]To determine the contents of Mn, Cu, Zn, Fe, K, Ca and Mg in velamen, stem bark and rhizosphere soil of Periploca sepium Bge. of three growth forms （vine, shrub and sprawling shrub）, and study the distribution and enrichment characteristic of these ele- ments in different fractions. [Methods] All samples were wet digested on electric heating plate, eontent of each element was determined by flame atomic absorption spectrometry. [Results] Contents of elements in velamen and stem bark are quite different, but all ordered as K〉Ca〉Mg〉Fe〉Mn〉Cu〉Zn; distribution of Zn, Fe, K and Ca were signifieantly different in two parts. Zn, K and Ca were more in stem bark, and Fe in velamen; contents of elements in rhizosphere soil which was excellent were ordered as Fe〉K〉Ca〉Mg〉Mn〉Zn〉Cu, and Cu and Ca were highly enriched, K had a certain enrichment in stem bark. [Conclusion] The foundation is laid for improving the basic re- seareh such as ecology of Periploea sepium Bge. by making the contents, distribution and enrichment characteristic of seven elements in velamen and stem hark cleared, providing data for supporting dividing into two categories, and Hrstly proposing the possiblity of phytore- mediation in copper contaminated soil by Periploea sepium Bge..

关 键 词：杠柳 无机元素 分布及富集 植物修复 

分 类 号：R282.72[医药卫生—中药学]