Determination of elements in National Bureau of Standards' geological standard reference materials by neutron activation analysis

Graham, Christopher Columbus; Glascock, Michael D.; Carni, J.; Vogt, J.R.; Spalding, T. G.

doi:10.1021/ac00246a035

Cited by 49 publications

(12 citation statements)

References 27 publications

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“…The INAA method allows us to determine the concentrations of 27 elements, short-lived (Cl, Dy, K, Mn and Na), medium-lived (Ba, La, Lu, Nd, Sm, U and Yb) and long-lived ones (Ce, Co, Cs, Eu, Fe, Hf, Rb, Sb, Sc, Sr, Ta, Tb, Th, Zn and Zr), many with high precision. Details of the analytical procedure may be found in Graham et al (1982). The EDXRF method was used to measure 14 elements, Ti, Mn, Fe, Ni, Cu, Zn, Ga, Pb, Th, Rb, Sr, Y, Zr and Nb, with varying precision depending on the element of interest (see Shackley 1998b).…”

Section: Methodsmentioning

confidence: 99%

Sources of archaeological volcanic glass in the Primorye (Maritime) Province, Russian Far East*

et al. 2002

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Geochemical studies of volcanic glasses (obsidians and perlites) from geological outcrops (N = 80) and archaeological collections (N = 110) were performed in order to determine source provenance in Primorye (Russian Far East), using neutron activation analysis and X-ray fluorescence spectrometry. Three major sources of archaeological volcanic glass were identified, two relatively local and one more remote. Several minor sources detected in the archaeological assemblage have not been located. This study suggests that long-distance obsidian exchange between Primorye and adjacent North-East Asia has existed since c. 10 000 BP.

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Section: Methodsmentioning

confidence: 99%

Sources of archaeological volcanic glass in the Primorye (Maritime) Province, Russian Far East*

et al. 2002

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“…Chloride determinations in rocks in the past two decades have been accomplished principally by one of five techniques, namely, spectrophotometry (1-4), X-ray fluorescence (5)(6)(7)(8), neutron activation (9)(10)(11)(12)(13)(14)(15)(16)(17), ion selective electrodes (18)(19)(20), and ion chromatography (21)(22)(23)(24). Good accuracy and sensitivity at the ppm level are possible with all five approaches.…”

Section: Application Of An Ion-selective E L E C T R O D E Method'to mentioning

confidence: 99%

Application of an Ion‐Selective Electrode Method to the Determination of Chloride in 41 International Geochemical Reference Materials

Elsheimer

1987

Geostandards Newsletter

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Determinations of trace amounts (with one exception) of chloride are reported for 41 international geochemical reference standards, 12 of which have no previously reported literature values. All determinations were made by the chloride‐specific ion‐selective electrode method of Aruscavage and Campbell with certain refinements. Chlorine is separated from most other elements in geologic materials by acid‐dissolution in a gas diffusion cell, and is subsequently determined as the chloride ion in basic solution. A statistical F‐test was applied to 19 of the standards for which three bottles of each were analyzed in triplicate with no failures. All these standards, plus the other 22 for which six analyses were performed on a single bottle, exhibited a relative standard deviation of 1‐6% for concentrations of chloride >50 ppm. For most samples chloride values agree well both with available, reported experimental values and with recommended or consensus values.

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“…The resulting dBASE file was finally appended to the larger obsidian database at MURR. For additional details concerning the procedures for sample preparation, standardization, and irradiation, the reader is referred to Glascock et al (1988), Graham et al (1982), and Vogt et al (1982). Information about the obsidian data bank at MURR is reported in Cobean et al (1991), Glascock (1994), and Glascock et al (1998).…”

Section: Irradiation and Analysismentioning

confidence: 99%

Subsource characterization: Obsidian utilization of subsources of the Coso volcanic field, Coso Junction, California, USA

Ericson

Glascock

2004

Geoarchaeology

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Six chemical subsource groups were identified in the analysis of 84 obsidian samples collected from subsource locations at Coso volcanic field, California. In prehistoric times, Coso provided obsidian for artifacts found from San Francisco Bay to San Diego to Death Valley to the eastern Mojave Desert. Subsource groups were defined by instrumental neutron activation analysis (INAA) of 29 elements followed by cluster analysis, principal component analysis, and bivariate plotting. The new data are compared to previously published INAA and X-ray fluorescence data. Characterization of 55 obsidian artifacts from archaeological sites located approximately 100 miles from Coso suggests preferential usage of specific subsources as a function of the directionality of travel. The results are consistent with a bimodal (resident and itinerant) model of procurement. This research illustrates the importance of accurate sourcing of obsidian artifacts when attempting to define subsource usage.

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Determination of elements in National Bureau of Standards' geological standard reference materials by neutron activation analysis

Cited by 49 publications

References 27 publications

Sources of archaeological volcanic glass in the Primorye (Maritime) Province, Russian Far East*

Sources of archaeological volcanic glass in the Primorye (Maritime) Province, Russian Far East*

Application of an Ion‐Selective Electrode Method to the Determination of Chloride in 41 International Geochemical Reference Materials

Subsource characterization: Obsidian utilization of subsources of the Coso volcanic field, Coso Junction, California, USA

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