Trace elements and stable sulfur isotopes in plants of acid mine drainage area:Implications for revegetation of degraded land  

作　　者：Agnieszka Gałuszka Zdzisław MMigaszewski Andrzej Pelc Andrzej Trembaczowski Sabina Doł˛egowska Artur Michalik 

机构地区：[1]Geochemistry and the Environment Division,Institute of Chemistry,Jan Kochanowski University,7 Uniwersytecka St.,25-406 Kielce,Poland [2]Mass Spectrometry Laboratory,Institute of Physics,Maria Curie-Skłodowska University,1 Maria Curie-Skłodowska Sq.,20-031 Lublin,Poland

出　　处：《Journal of Environmental Sciences》2020年第8期128-136,共9页环境科学学报（英文版）

基　　金：This work was supported by the National Science Center(a research Grant#2015/17/B/ST10/02119).

摘　　要：The abundances of trace elements,a low pH of water and soil in areas impacted by the acid mine drainage(AMD)may cause an excessive uptake of potentially toxic elements and nutritional imbalances in plants.Metal-tolerant,native plants are used for revegetation of degraded mining areas.We established levels of selected trace elements and stable sulfur isotopes in the above-ground plant biomass collected in a mining area in south-central Poland.In 2016,20 samples of the most common species were collected from sites with a different influence of acid mine drainage and analyzed for trace elements by the inductively coupled plasma mass spectrometry technique.On the basis of the results obtained in 2016,the most contaminated site was selected for a more detailed study,in which sulfur contents and stable sulfur isotope ratios were determined together with trace elements in 17 samples.The results confirmed that the plants native to the AMD area efficiently accumulated trace elements,especially As and rare earth elements.Mosses showed the highest content of trace elements,but exhibited the lowest concentrations of sulfur accompanied by the highestδ34S values.It has been shown for the first time that stable sulfur isotope composition of AMD plants in south-central Poland is significantly depleted in the 34S isotope showing an averageδ34 S value of–10.5‰in comparison with positiveδ34S values in local vegetation growing outside the AMD area and in local precipitation.

关 键 词：Trace elements Stable sulfur isotopes Pyrite oxidation Rare earth elements PLANTS 

分 类 号：X171.4[环境科学与工程—环境科学]