Investigation of a fusion technique for the determination of total sulfur in geological samples by ion chromatography

Stallings, E.; Candelaria, L. M.; Gladney, Ernest S.

doi:10.1021/ac00162a031

Cited by 13 publications

(8 citation statements)

References 19 publications

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“…[3 -6] One method of determining sulfur is by ion-exchange chromatography (IC). [7] For this determination, the sample is dissolved by different methods. Thus in one study, [8] the sample is treated with Na 2 O 2 at 800 • C in a zirconium crucible, the melt is dissolved in acid medium, and the liquid part is then analysed by IC.…”

Section: Introductionmentioning

confidence: 99%

New methodology for sulfur analysis in geological samples by WD‐XRF spectrometry

et al. 2008

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This article describes a methodology for analysing sulfur in geological samples by wavelength-dispersive x-ray fluorescence (WD-XRF) spectrometry. Calibration curves were constructed with different sulfur compounds in samples prepared in the form of both beads and pellets, and the results compared. A new way of preparing the beads has been established, adding the quantity of barium required for the sulfur contained in the sample to form a stable BaSO 4 compound, which suppresses the problem of sulfur loss during the fusion process.The methodology developed for the determination of sulfur by WD-XRF analysis has been validated by comparing the findings with the results obtained using an independent method of combustion with infrared (IR) detection and analysing reference materials.

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Section: Introductionmentioning

confidence: 99%

New methodology for sulfur analysis in geological samples by WD‐XRF spectrometry

et al. 2008

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“…This is achieved by digestion with concentrated acids, ashing with Ag 2 O and NaHCO 3 , 10 oxidation with NaOBr 7 or alkaline fusion. 11 For the determination of sulphur in the extract, ion chromatography compared favourably with the methylene blue method. 10,12 Indirect atomic absorption 13 and ICP 14,15 may also be used to quantify sulphate in the extract.…”

Section: Introductionmentioning

confidence: 99%

Determination and fractionation of sulphur in a contaminated dredged sediment1

Tack

Lapauw

Verloo

1997

Talanta

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Summary-Conversion of sulphur compounds in reduced, contaminated sediments that are brought in upland conditions may largely affect the potential mobility of heavy metal contaminants. We applied selected methods for the determination of total sulphur and sulphur fractions in a contaminated sediment in the reduced state and after gradual drying and oxidation during one month.Dry ashing, followed by ion chromatographic detection, was reliable for the determination of total sulphur. Good recoveries were obtained in both reference samples and spiked samples. Total sulphur was 14.5 ± 0.6 g kg -1 relative to dry sediment.Wet chemical methods that involve the determination of acid-volatile, Zn-HClreducible, chromium-reducible, acetone-soluble and HI-reducible sulphur were used to estimate specific sulphur forms. Results for acetone-soluble sulphur were to high and not consistent with results for other fractions. Major part of sulphur in the sediment (90 %) was inorganic. Sulphides were converted partially to sulphate and to intermediary oxidised sulphur compounds upon oxidation of the sediment. The results suggested that the intermediary oxidised sulphur pool in the reduced sediment (2.5 g kg -1 ) mainly consisted of pyrite, that was not converted during drying and oxidation. No significant changes in organic sulphur were detected.

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“…Ion chromatography, the method of choice for the determination of common anions, offers certain advantages over other techniques (7)(8)(9). In the literature few reports (10)(11)(12)(13)(14)(15) have been published on the ion chromatographic analysis of ions in the inorganic materials but none have appeared on its use for the analyses of catalysts. The objective of this work was to develop an ion chromatographic (IC) method for the rapid and accurate determination of chloride in bimetallic reforming catalysts.…”

Section: Introductionmentioning

confidence: 99%

Determination of chloride in platinum-rhenium alumina-based reforming catalyst by ion chromatography

Singh¹,

Alam²,

Redwan³

et al. 1989

Anal. Chem.

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1) Mach, M.; Kersten, H.; Kersten, W. Saito, S.; Ohkubo, A.; Yamanaka, M.; OkaJi, M. Abstracts of the World Congress of Anatomic and Clinical Pathology 1987, 14, 80. Robinson, P. J.; Dunnlll, P.; Lilly, M. D. Biochem. Biophys. Acta 1971, 242, 659-661 Rauhut, M. M. Acc. Chem. Res. 1989, 2 , 80-87. Murakita, H.; Watanabe, Y.; Fujiwara, M. Abstracts of International Conference on Polyamines In Life Sclences 1986, 253-254. Kamei, S.; Mashige, F.; Ohkubo, A.; Yamanaka, M.; Okada, M.; Imahorl, K. Jpn. An Ion chromatographlc method was developed for the fast and accurate determlnatlon of chlorlde In Pt-Re/AI,O, catalysts uslng a Dlonex Model 21201 Ion chromatograph. Extraction of chloride was carrled out wlth sodium hydroxide solution In a Teflon Parr bomb at 150 O C . After flltratlon, Ion chromatographlc analyses were made by Injecting 100 pL of the diluted solutlon Into the sample port. Separatlon of chlorlde was achleved on a Dlonex AS-4 separator and AG-4 guard column wlth sodium carbonate-blcarbonate eluent. Theproposed method Is free from Interferences of sulfide and halldes generally encountered In conventlonal potentiometric and spectrophotometric methods. The total analysls time of less than 1 h was considerably shorter than that reported for conventlonal methods. The minimum detectable chloride In a catalyst sample was 0.1% by welght wlth a relatlve standard devlatlon of about 3%.

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Investigation of a fusion technique for the determination of total sulfur in geological samples by ion chromatography

Cited by 13 publications

References 19 publications

New methodology for sulfur analysis in geological samples by WD‐XRF spectrometry

New methodology for sulfur analysis in geological samples by WD‐XRF spectrometry

Determination and fractionation of sulphur in a contaminated dredged sediment1

Determination of chloride in platinum-rhenium alumina-based reforming catalyst by ion chromatography

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