Metaborate digestion procedure for inductively coupled plasma-optical emission spectrometry

Burman, Jan Ola.; Pontér, Christer; Boström, Kürt

doi:10.1021/ac50026a043

Cited by 111 publications

(25 citation statements)

References 5 publications

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“…Furthermore, ICP-AES systems are much less demanding concerning sample sizes and can routinely analyze samples as small as 100-250 mg; under special circumstances these limits can be pushed down to a few milligrams for a selected number (10-15) of elements of interest (for instance, in separate minerals and phenocrysts). These aspects have been further discussed in Burman et al (1977Burman et al ( ,1978, in Burman and Boström (1979), Thompson and Walsh (1983), and Boström, Perissoratis et al (1990). ICP-AES can, in addition, perform chemical analyses of metal-enriched seawaters and hydrothermal plumes and several rare earth elements (Boström, 1987).…”

Section: Alternative Analytical Methodsmentioning

confidence: 99%

Trace Element Determinations by X-Ray Fluorescence Analysis: Advantages, Limitations, and Alternatives

Boström¹,

Bach²

1995

Proceedings of the Ocean Drilling Program, 142 Scientific Results

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A statistical study of data files obtained by repeated X-ray fluorescence analyses (XRF) of many major and 13 trace components in 20 reference materials was conducted aboard JOIDES Resolution. The results indicate that XRF is excellent for determining most main elements in many rocks and of some trace elements (for instance Nb, Y, Sr and Rb) even at low concentrations (4-10 ppm) and that XRF data obtained aboard ship are of the same quality as XRF data reported from land-based laboratories.Other trace components, however, are harder to determine by XRF; thus, Ba concentrations below 20 ppm in basaltic rocks are impossible to measure with satisfactory precision under routine conditions, and determinations of Ce, V, and Zr at low levels may be of questionable quality.Additional trace element data can be obtained through alternative, more versatile methods, which will permit a significant broadening of the geochemical programs aboard JOIDES Resolution.

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Section: Alternative Analytical Methodsmentioning

confidence: 99%

Trace Element Determinations by X-Ray Fluorescence Analysis: Advantages, Limitations, and Alternatives

Boström¹,

Bach²

1995

Proceedings of the Ocean Drilling Program, 142 Scientific Results

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“…Total carbon (TOT/C) and total sulfur (TOT/S) were obtained by Leco. The analyses were performed by Acme Analytical Laboratories, Vancouver, Canada (see Burman et al 1978 for details). Iridium analyses were performed by direct irradiation neutron activation by the Becquerel Laboratories, Canada.…”

Section: Sampling and Methodologymentioning

confidence: 99%

Trace element concentrations in the Mexico‐Belize ejecta layer: A link between the Chicxulub impact and the global Cretaceous‐Paleogene boundary

Wigforss-Lange

Vajda

Ocampo³

2007

Meteorit & Planetary Scien

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Abstract-Four exposures of Chicxulub impact ejecta along the Mexico-Belize border have been sampled and analyzed for major and trace element abundances. The ejecta deposits consist of a lower spheroid bed, containing clay and dolomite spheroids, and an upper diamictite bed with boulders and clasts of limestone and dolomite. The matrix of both beds is composed of clay and micritic dolomite. The rare earth element (REE) compositions in the matrix of both units show strong similarities in concentrations and pattern. Furthermore, the Zr/TiO 2 scatter plot shows a linear correlation indicating one source. These results indicate that the basal spheroid bed has the same source and was generated during the same event as the overlying diamictite bed, which lends support to a single-impact scenario for the Albion Formation ejecta deposits.The elevated concentrations of non-meteoritic elements such as Sb, As, U, and Zn in the matrix of the lower spheroid bed are regarded to have been derived from the sedimentary target rocks at the Chicxulub impact site. The positive Eu and Ce anomalies in clay concretion and in the matrix of the lower part of the spheroid bed in Albion Island quarry is probably related to processes involved in the impact, such as high temperature and oxidizing conditions. Analogous trace element anomalies have been reported from the distal Cretaceous-Paleogene (K/T) boundary clay layer at different sites. Thus, the trace element signals, reported herein, are regarded to support a genetic link between the Chicxulub impact, the ejecta deposits along the Mexico-Belize border, and the global K/T boundary layer.

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“…The dried samples were ignited at 1000 7C for 75 min. On cooling, 0.125 g sample was fused with lithium metaborate (Burman et al 1978) in a graphite crucible at 1000 7C for 45 min. The resulting bead was dissolved in dilute acid and filtered in order to remove carbon particles from the crucibles.…”

Section: Methodsmentioning

confidence: 99%

Spatial and temporal variations in the compositions of Upper Miocene to Recent basic lavas in the northern main Ethiopian rift: Implications for the causes of Cenozoic magmatism in Ethiopia

Wolde

1996

Geol Rundsch

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The rate of lithospheric extension has previously been suggested as the most important factor governing the compositions of magmas generated in the Cenozoic Ethiopian volcanic province (CEVP). However, the distribution and chemistry of volcanic rocks extending from the western plateau margin at Addis Ababa to the rift floor in Nazret, northern sector of the main Ethiopian rift (MER), suggest that transitional magmatism in the region may have been triggered by an increase in the amount of lithospheric extension in the Early Pliocene. The rocks occur across an area of variable crustal thickness and show a general age progression from Upper Miocene (^9 Ma) to Recent toward the rift. Alkalic basalts are extensive in the western part of the rift and along its margin but are found only locally within the rift, whereas transitional basalts are found within the rift only. Both types of basalts appear to have been derived from a common mantle source. In contrast, alkalic and transitional basalts on the Ethiopian plateau are mutually exclusive in terms of their spatial distribution, but exhibit a compositional contiguity which suggests that transitional magmas on the plateau formed at the expense of alkalic magmas, i.e. by equilibration of alkalic magmas at relatively shallow depth. The alkalic basalts bear clear record of a decrease in the degree of partial melting with time, suggesting that magmatism on the plateau was possibly triggered by a transient thermal anomaly.

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Metaborate digestion procedure for inductively coupled plasma-optical emission spectrometry

Cited by 111 publications

References 5 publications

Trace Element Determinations by X-Ray Fluorescence Analysis: Advantages, Limitations, and Alternatives

Trace Element Determinations by X-Ray Fluorescence Analysis: Advantages, Limitations, and Alternatives

Trace element concentrations in the Mexico‐Belize ejecta layer: A link between the Chicxulub impact and the global Cretaceous‐Paleogene boundary

Spatial and temporal variations in the compositions of Upper Miocene to Recent basic lavas in the northern main Ethiopian rift: Implications for the causes of Cenozoic magmatism in Ethiopia

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