Determination of sulphur in trace levels in petroleum products by wavelength-dispersive X-ray fluorescence spectroscopy

Christopher, J.; Patel, M. B.; Ahmed, Saeed; Basu, Biswajit

doi:10.1016/s0016-2361(00)00213-1

Cited by 18 publications

(10 citation statements)

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“…This also increases the need to determine the S content of the refinery streams accurately to enable the optimum blending. One paper 62 that described the optimisation of WDXRF for such measurements developed a robust method for the low-ppm range. Many standard methods have been improved and developed by standardisation bodies to address the current need for robust low-level S determinations in gasoline and diesel fuel.…”

Section: Chemicalsmentioning

confidence: 99%

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

Fisher

Hinds

Nelms³

et al. 2002

J. Anal. At. Spectrom.

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Section: Chemicalsmentioning

confidence: 99%

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

Fisher

Hinds

Nelms³

et al. 2002

J. Anal. At. Spectrom.

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“…The most common methods found in literature are concerned with the quantification of total sulphur [ 5 ] and sulphide compounds [ 1 , 10 ]. Although elemental sulphur has been studied for many decades [ 11 ], few changes can be observed from the different methodologies developed over time.…”

Section: Introductionmentioning

confidence: 99%

Use of Hg-Electroplated-Pt Ultramicroelectrode for Determining Elemental Sulphur in Naphtha Samples

Andrade

Souza

Fernandes

et al. 2012

Journal of Analytical Methods in Chemistry

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This paper describes the applicability of a Hg-electroplated-Pt ultramicroelectrode in the quantification of elemental sulphur in naphtha samples by square-wave voltammetry. A reproducible deposition methodology was studied and is reported in this paper. This methodology is innovative and relies on the quality of the mercury stock solution to obtain reproducible surfaces required for the analytical methodology. All analyses were performed using a Hg-electroplated-Pt ultramicroelectrode (Hg-Pt UME) due to the low sensibility of such devices to ohmic drops in resistive solutions. The responses of the peak areas in voltammetric experiments were linear in all of the range studied. The method developed here is accurate and reproducible, with a detection limit of 0.010 mg L−1 and a good recovery range for both standard solutions of elemental sulphur (85 to 99%) and real naphtha sample (79%). These results attest to the potential for the application of this electroanalytical methodology in determining elemental sulphur in naphtha samples containing mercaptans and disulphides.

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“…Due to the importance of sulfur in chemical, biological and industrial areas, sulfur compounds have been studied intensively for many years [1][2][3][4][5], especially with regard to the determination of sulfur and its compounds in drugs and natural and petroleum products. Sulfur is found in petroleum in several forms.…”

Section: Introductionmentioning

confidence: 99%

“…The large number of analytical methods that have been proposed for determination of elemental sulfur indicates that there is no established quantitative method for the direct determination of trace quantities of elemental sulfur in petroleum matrices [11][12][13][14][15][16]. In fact, the most common methods found in the literature were developed to quantify total sulfur [5] and sulfide [1,8] compounds.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical determination of elemental sulfur in Brazilian naphtha: method and validation

et al. 2009

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Sulfur compounds in petroleum have caused several problems such as corrosion of equipment, lack of high quality final products, and emission of toxic gases into the environment. Elemental sulfur can increase these problems, since small amounts of it turn mercaptans into potential corrosion agents. This paper describes the applicability of a voltammetric method to quantify elemental sulfur in Brazilian naphtha samples. Elemental sulfur was quantified in synthetic and real samples using square wave voltammetry and a hanging mercury drop electrode. The method was found to have low limits of detection (0.003 mg L -1 ) and quantification (0.009 mg L -1 ) and a good recovery range (94.0-108.6%). This voltammetric method has potential for use in elemental sulfur determination in naphtha samples containing mercaptans and aliphatic and aromatic disulfides.

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Determination of sulphur in trace levels in petroleum products by wavelength-dispersive X-ray fluorescence spectroscopy

Cited by 18 publications

References 0 publications

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

Use of Hg-Electroplated-Pt Ultramicroelectrode for Determining Elemental Sulphur in Naphtha Samples

Electrochemical determination of elemental sulfur in Brazilian naphtha: method and validation

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