Location and speciation of gadolinium and yttrium in roots of Zea mays by LA-ICP-MS and ToF-SIMS
| Autor: | Thorsten Reemtsma, Jessica Saatz, Birgit Daus, Hryhoriy Stryhanyuk, Niculina Musat, Matthias Otto, Doris Vetterlein, Hans H. Richnow |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Health
Toxicology and Mutagenesis Gadolinium Analytical chemistry chemistry.chemical_element 010501 environmental sciences Toxicology Mass spectrometry Plant Roots Zea mays 01 natural sciences Mass Spectrometry Ion Yttrium 0105 earth and related environmental sciences Laser ablation Epidermis (botany) Spectrum Analysis 010401 analytical chemistry General Medicine Pollution 0104 chemical sciences Secondary ion mass spectrometry chemistry Metals Rare Earth Composition (visual arts) |
| Zdroj: | Environmental Pollution. 216:245-252 |
| ISSN: | 0269-7491 |
| Popis: | Increasing production of rare earth elements (REE) might lead to future contamination of the environment. REE have been shown to accumulate in high concentrations in roots of plants. Plant experiments with Zea mays exposed to a nutrient solution containing gadolinium (Gd) or yttrium (Y) with 10 mg L −1 Gd or Y were carried out to investigate this accumulation behaviour. Total concentrations of 3.17 g kg −1 and 8.43 g kg −1 of Gd and Y were measured in treated plant roots. Using a novel combination of laser ablation mass spectrometry and time-of-flight secondary ion mass spectrometry, imaging of location and concentration of Gd and Y was carried out in root thin sections of treated roots. Single spots of elevated REE concentration were found at the epidermis, while inside the cortex, weak signals of Gd + and Y + were aligning with the root cell structures. The composition of Gd-containing secondary ions proves an REE-oxide phase accumulated at the epidermis, limiting REE availability for further uptake. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect