南极菲尔德斯半岛六种藻类和地衣植物的X荧光分析

为了研究南极的植物与环境间的关系 ,探讨植物在南极环境监测中的作用 ,在无标样条件下 ,利用微束 X荧光分析法对南极菲尔德斯半岛的 6种藻类和地衣植物进行了元素分析。其中藻类植物有孔石莼 (Ulva pertusa)、海膜 (H alymenia sp.)和大型鞘丝藻 (Lyngbya major) ,地衣植物有筛石蕊 (Cladonia borealis)、喇叭石蕊 (C.fimbriata)和松萝 (Usnea sp.)。研究结果发现 ,不同的藻类植物对各种元素的吸收能力不同 ,在 XRF(X射线荧光 )谱中 ,孔石莼比海膜含有更多的元素 ,象 As、Br和 Rb,Cu和 Zn的含量也较高。在大型鞘丝藻中 ,K比 Ca少 ,Zn的含量较高。在 3种地衣植物中 ,其 XRF谱中的元素种类组成非常相似 ,只是 Mn、Fe、Cu和 Zn等元素的相对含量有些差异

ANALYSIS ON THE 6 SPECIES OF ALGAE AND LICHEN BY SR-XRF IN THE FILDES PENINSULA OF ANTARCTICA

In order to study the relationship between the plant and the environment, and to make an inquiry into the function of testing surrounding, without a standard specimen, we had analyzed 6 species of algae and lichen about elements in the Fildes Peninsula of Antarctica by mini-beam XRF. Specimens are Ulva pertusa , Halymenia sp. and Lyngbya major which belong to algae, and Cladonia borealis , C. fimbriata and Usnea sp. which belong to lichen. The result turns out to be that various algae show different absorption for every elements. In XRF spectra, Ulva pertusa possesses more elements than Halymenia sp., like Br, As and Rb. The content of Cu and Zn is high too. In XRF spectra of Lyngbya major , the content of K is lower than Ca, the content of Zn is high. The element component in 3 species of lichen of Antarctica is very similar each other,but the relative content of Mn, Fe, Cu and Zn is different.