Natural background concentrations of rare-earth elements in a forest ecosystem

Science of The Total Environment - Tập 103 - Trang 27-35 - 1991
Bernd Markert1,2, Zhang De Li3
1Systems Research Group, University of Osnabrück, POB 4469, 4500 Osnabrück, FRG
2Forschungszentrum Jülich, Zentralabteilung für chemische Analysen, Postfach 1913, 5170 Jülich, FRG
3Henan Central Laboratory, Ministry of Geology and Mineral Resources, 28 Jinshui Road, Zhengzhou City, China