Quantitative Spectrochemical Determination of Barium and Strontium

Grabowski, R. J.; Unice, R. C.

doi:10.1021/ac60140a026

Cited by 18 publications

(5 citation statements)

References 32 publications

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“…and at 500 bar (Figures 1a and 1c, respectively), but the maximum model solubility at 1000 bar is overestimated by approximately 2 ppm compared to 10 a Cited by Kolthoff and Vogelenzang [34]. No reference is made to the temperature, so it was assumed to be 18 °C b Grabowski and Unice [41] c Johnson and Nishita [42] d Blount et al [43] measurements (Figure 1d).…”

Section: Baso 4 Solubility In Watermentioning

confidence: 99%

Review of barium sulphate solubility measurements

Corrêa

Jiang²,

Neerup

et al. 2022

Geothermics

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Section: Baso 4 Solubility In Watermentioning

confidence: 99%

Review of barium sulphate solubility measurements

Corrêa

Jiang²,

Neerup

et al. 2022

Geothermics

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“…The molal concentration solubility product was designated by EXPERIMENTAL Analytical Methods. Barium was determined by a spectrographic method (1). The coefficient of variation was 5% when the barium content exceeded 3.0 mg. per liter; the limit of detection was 0.1 mg. per liter of barium.…”

mentioning

confidence: 99%

“…K's = mBa* mso, (1) while the thermodynamic solubility product was expressed as Ks= y2±K's= 72±mBamso.…”

mentioning

confidence: 99%

Solubility of Barium Sulfate in Sodium Chloride Solutions from 25° to 95° C.

Templeton¹

1960

J. Chem. Eng. Data

131

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“…However, the literature of two decades ago contains many papers on determinations of trace elements in G-1 and W-1 and in NBS samples of economic rather than geologic interest by, among others, Shimp and others (1957), Grabowski and Unice (1958), Turekian and Carr (1961), Clark and Swaine (1963), Filby (1964), Taylor and Kolbe (1964), and Ball and Filby (1965). The USGS rocks G-1 and W-1, and the older NBS samples, were prepared mainly for determinations of their major and minor constituents.…”

Section: Reasons For Reference Samplesmentioning

confidence: 99%

Reference Samples in Geology and Geochemistry

Flanagan¹

1986

Geostandards Newsletter

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The use of geologic reference samples may have started in the last quarter of the 19th century after analysts in England, Germany, and the United States deplored the large variation in data obtained by different analysts for the same constitutent in the same sample. Early samples involved in cooperative analysis, also known as “round robins,” were mainly industrial or agricultural materials of economic value, or products derived from them. Data from some round robins were so diverse that “uniformity in analysis” was a part of early committee names. The first two geologic samples of the National Bureau of Standards were analyzed cooperatively. Samples for geology and geochemistry are classified as artificial samples or as natural materials of either economic or geochemical interest—the latter distinction not always possible. Artificial samples have been prepared in several substrates, and samples in other substrates may be limited only by the ingenuity of the analyst. The principal suppliers of samples of economic interest are discussed, by country, to show the range of samples prepared by organizations. Natural samples of geochemical interest are mentioned by sample type. Because of their intended use, some geochemical samples are restricted to analysts using specific techniques. Methods used for and precautions to be observed while preparing large or small rock samples are discussed. Excess grinding of small rock samples reduces the amount of FeO found in a rock analysis. Unavoidable contamination occurs when processing rocks in steel. Tungsten carbide, and some mechanical equipment, should be avoided. A review of the allied subjects of homogeneity of a sample, sampling errors, and size of the sample grains shows that we have reinvented the wheel since 1885. Methods used tc (1) test the homogeneity of samples, (2) eliminate outliers which some scientists reject repeatedly despite warnings of statisticians, and (3) estimate best values when the method for estimating should be part of the program for a sample are discussed. Calibration lines may be used to determine if “best values” in a series of several samples are really “best” and to furnish confidence limits for a single datum. The agreement of data by an analyst for a reference sample with data preferred by an issuing organization is usually described by one of several adjectives, a subjective procedure. A variation of a x2 method may be used if a producer specifies the exact number of data for the cooperative analytical program to be furnished by each analyst and then calculates the population estimates of the mean and standard deviation for an element in a sample. Because of the large increase in the number of reference samples of all types, a revised table listing samples that may be useful in geochemistry is included. It is not known if the samples, other than those of the U.S. Geological Survey, were collected in conformance with provisions of the Plant Pest Control Regulations of the U.S. Department of Agriculture, or of similar organizations in other ...

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Quantitative Spectrochemical Determination of Barium and Strontium

Abstract: fringent needles. The same treatment does not affect the cobalt crystals noticeably: Boiling a quinoline mount of the cobalt-nickel-quinoline mixed crystals left two species, the colorless birefringent needles and blue-violet crystals.Quinoline has been used as a reagent

Cited by 18 publications

References 32 publications

Review of barium sulphate solubility measurements

Review of barium sulphate solubility measurements

Solubility of Barium Sulfate in Sodium Chloride Solutions from 25° to 95° C.

Reference Samples in Geology and Geochemistry

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