On the spectra of the rare earth elements
β Scribed by P.F.A Klinkenberg
- Publisher
- Elsevier Science
- Year
- 1947
- Weight
- 692 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0031-8914
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## Abstract A comparison is made of the 300 K Raman spectra of some cyclopentadienyl rare earth complexes. The data show no major change in the position of corresponding bands of the series. A detailed study is carried out in the spectral region of 150 cm^β1^ at 77 K of the samples. Some evidence o
## Abstract The rare earth element (REE) concentrations of the dissolved and particulate fractions and bed sediment between Manaus and SantarΓ©m in the Amazon River, and in some major tributaries, were evaluated. A very important zone in the Amazon basin, the βencontro das aguasβ area where the Rio