Rare earth elements in iron oxy−hydroxide rich sediments from the Marabasco River-Estuary System (pacific coast of Mexico). REE affinity with iron and aluminium

Determination of Rare Earth Elements (REEs) in Airborne Particulate Matter (APM) Collected in Tokyo, Japan, and a Positive Anomaly of Europium and Terbium

“…Also, a positive anomaly of Eu could be obtained in June and August. Some authors reported Eu anomalies in the water environment [23][24][25] and a negative Eu anomaly in dust aerosol collected in Eastern Pamirs was reported by Wu et al 26 As far as the author's knowledge, Tb and Eu positive anomalies have not yet been reported for APM. REE anomalies are often observed for Ce and Eu.…”

The provenancing of ochres from the Neolithic Temple Period in Malta

“…As Fe was the key component of interest in ochre, the matrix plots were coupled with Pearson's correlation tests and previous research (Cornell and Schwertmann, 2003;Dawood et al, 2004;Kato et al, 1998;Marmolejo-Rodríguez et al, 2007;Nakamura, 1974;Piper, 1974) to select the elements that associated with Fe for statistical analysis. Al, Ti, Zr, Li, Mn, Cr, V, Cu and Zn exhibited a positive, near-linear relationship when plotted against Fe, showing they were probably substituting for Fe in the ochres (P-value less than 0.05).…”

Effective passive treatment of high-strength acid mine drainage and raw municipal wastewater in Potosí, Bolivia using simple mutual incubations and limestone

“…Generally, similar behavior among REE was observed under the three incubation regimes. REE solubility decreases with increasing pH (Verplanck et al, 2004;Gilchrist et al, 2009), REE can sorb to Fe and Al oxyhydroxides (Verplanck et al, 2004;Centeno et al, 2004;Marmolejo-Rodríguez et al, 2007) and various microorganisms may sorb or uptake REE (Merten et al, 2004;Tyler, 2004;Merten et al, 2005). Merten et al (2004) found that REE can sorb to the fecal indicator bacteria, E. coli, which are present in WW.…”