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- Title
Multivariate Analysis of Elements in Chinese Brake Fern as Determined Using Neutron Activation Analysis.
- Authors
Chao-Yang Wei; Zhi-Yong Zhang
- Abstract
Pytoremediaton of arsenic (As) contamination using Chinese brakefern (Pteris vittata L.), an As hyperaccumulator has proven potential becauseof its cost-effectiveness and environmental harmonies. Aiming to investigatethe elemental correlation in Chinese brake fern, 20 elements (As, Br, Ca, Ce,Co, Cr, Eu, Fe, Hf, La, Na, Nd, K, Rb, Se, Sm, Sr, Th, Yb and Zn) were measuredin the fronds and roots of the fern by neutron activation analysis. Theferns were sampled from two sites with high geogenic As levels: Zimudang(ZMD) and Lanmuchang (LMC) in Guizhou Province, China. Multivariatestatistic analysis was performed to explore the interrelationship betweenthese elements, especially between As and other elements. As was found tobe positively related to K, Na, La, and Sm in both the roots and the fronds,suggesting that these four elements might operate as synergies to As duringuptake and transportation processes. Se was positively related to most of theother cations measured, except in the fronds of the fern at ZMD, where Brreplaced Se as positively related to the other cations. The difference of Asand Se in correlation with other cationic elements suggested that the twoanionic elements play different roles in elemental uptake processes. Ourfindings of elemental correlation highlight the importance of the anion-cation balance in Chinese brake fern.
- Subjects
CHINA; FERNS; HYPERACCUMULATOR plants; MULTIVARIATE analysis; NUCLEAR activation analysis
- Publication
Biological Trace Element Research, 2007, Vol 115, Issue 3, p277
- ISSN
0163-4984
- Publication type
Article
- DOI
10.1007/BF02686002