Partitioning of silver, beryllium and molybdenum among chemical fractions in the sediments from the Labe (Elbe) river in Central Bohemia, Czech Rep.

Borovec, Z.

doi:10.1007/bf00807537

Cited by 6 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Along the whole river section, it was found that there were anomalous elevated background concentrations of Ce (98-fold), As and Br (14-fold), Mo (7-fold), Tm (4-fold) and Be (2.8-fold), with a maximum in this region. The elevated Mo content could be derived from molybdenite from pegmatite (Borovec 1993). Released Mo could be precipitated in the presence of Fe(III) to yield an insoluble ferri-molybdenite complex (Titley 1963) or organometallic complexes (Szilagyi 1967) or could be present as an organomineral (Fe) colloid (Alexandrova 1960).…”

Section: Resultsmentioning

confidence: 99%

Trace elements levels in sediments of the Czech part of the Elbe river

Borovec

1996

GeoJournal

View full text Add to dashboard Cite

A study was carried out of the accumulation of 45 elements in the fine-grained fraction (< 63 p,m) of the surface stream sediments of the Elbe (Labe) River. The metal contents in the sediments, compared to the geochemical background concentrations, were highest for Ag, Cd, Cu, Hg, Zn, Pb and As. Statistical factor analysis was employed to identify seven types of components in sediments with different sedimentological and.geochemical character. The eigenvalues of the first seven factors explained 85% of the total variance. Most of the contaminants in the bottom sediments appear to be bonded to hydrated Fe and Mn oxides and to particulate loading. Possible pollution sources were found by cluster analysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Trace elements levels in sediments of the Czech part of the Elbe river

Borovec

1996

GeoJournal

View full text Add to dashboard Cite

show abstract

Beryllium in Water

Clausen

2004

Water Encyclopedia

View full text Add to dashboard Cite

Numerous analytical methods are available for analyzing beryllium: inductively coupled plasma‐mass spectrometry (ICP‐MS), optical emission spectrometry (ICP‐OES), atomic absorption spectrometry (AAS), colorimetric, and fluorimetric methods (10, 11). A detailed listing of the colorimetric methods can be found in Taylor et al. (12). The preferred method for soil and water analysis in the environmental business is ICP‐MS following United States Environmental Protection Agency (USEPA) methods 200.7 and 6010. The ICP‐MS instrumentation has greater sensitivity and reduced interference from other metals, compared to other analytical methods. A typical reporting limit of beryllium in environmental investigations using the ICP‐MS method is 5 ppb; typical method of detection limits for soil and water are 0.1 µg/kg and 0.7 µg/L, respectively. AAS is also an USEPA approved process following method 7090 or 7091. Due to beryllium's low concentration and subsequent interference with other metals in environmental samples, a number of separation and preconcentration methods have been developed using chelating agents, ion‐exchange resins, sorbants, and surfactants.

show abstract