Mazej Zdenka, Germ Mateja
ERICo Velenje, Environmental Research and Industrial Co-operation d.o.o., Koroska 58, 3320 Velenje, Slovenia.
Chemosphere. 2009 Feb;74(5):642-7. doi: 10.1016/j.chemosphere.2008.10.019. Epub 2008 Nov 26.
The concentration of trace elements was studied in different parts of the submersed species Najas marina and Potamogeton lucens and in floating-leaved species Nuphar lutea and Potamogeton nodosus, and also in the corresponding samples of water and sediment in the artificial lake Velenjsko jezero, where the large amount of ash from lignite coal (about 15 million tons) is deposited at the bottom. The concentration of trace elements in water was mainly below the detection limit. In sediment only the concentration of As was found to be above the average European background concentration. It also showed the highest degree of translocation from sediment into plant roots, but its mobility to above-ground plant parts was negligible. The submersed species N. marina and P. lucens exhibited similar concentrations of trace elements in their organs. Of the floating-leaved species, the lowest concentrations of trace elements were found in N. lutea and the largest in P. nodosus. Significantly higher concentrations of As, Ni, Pb and Cr were shown in roots of N. marina, P. lucens and P. nodosus than in their stems and leaves, whereas Cu and Zn were equally distributed throughout all their organs. Cr and Ni also showed relatively high mobility from roots to upper parts of N. lutea.
研究了沉水植物茨藻和光叶眼子菜以及浮叶植物黄睡莲和瘤果眼子菜不同部位的微量元素浓度，还研究了韦伦jsko jezero人工湖相应的水样和沉积物样本中的微量元素浓度，该人工湖底部沉积了大量褐煤灰烬（约1500万吨）。水中微量元素的浓度主要低于检测限。在沉积物中，仅发现砷的浓度高于欧洲平均背景浓度。它还显示出从沉积物到植物根部的转运程度最高，但其向地上植物部分的迁移率可忽略不计。沉水植物茨藻和光叶眼子菜各器官中的微量元素浓度相似。在浮叶植物中，黄睡莲中的微量元素浓度最低，瘤果眼子菜中的最高。茨藻、光叶眼子菜和瘤果眼子菜根部的砷、镍、铅和铬浓度明显高于其茎和叶，而铜和锌在所有器官中分布均匀。铬和镍在黄睡莲中也显示出从根部到上部相对较高的迁移率。
