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| Author | : G. Engel |
| Publisher | : |
| Total Pages | : 7 |
| Release | : 1987 |
| Genre | : |
| ISBN | : |
| Author | : J. Blecha |
| Publisher | : |
| Total Pages | : 9 |
| Release | : 1984 |
| Genre | : |
| ISBN | : |
| Author | : International Organization for Standardization |
| Publisher | : |
| Total Pages | : 7 |
| Release | : 2003 |
| Genre | : Fluorescence spectroscopy |
| ISBN | : |
ISO 8754:2003 specifies a method for the determination of the sulfur content of petroleum products, such as naphthas, unleaded motor gasolines, middle distillates, residual fuel oils, base lubricating oils and components. The method is applicable to products having sulfur contents in the range 0,03 % (by mass) to 5,00 % (by mass). For the purposes of this International Standard, the term "% (m/m)" is used to represent the mass fraction of a material. Heavy metal additives, such as lead alkyls, may interfere with the determination. Elements such as silicon, phosphorus, calcium, oxygen, potassium, zinc, molybdenum, barium and halogens interfere, if present in concentrations of more than a few hundred milligrams per kilogram. Some modern instruments allow the analyst to compensate for matrix and spectral interferences by spectra deconvolution and inter-element correction by multiple regression. For samples varying in composition of aromatic hydrocarbons and paraffinic hydrocarbons, the ratio of carbon to hydrocarbon in a sample (C/H ratio) may also interfere with the determination, when the ratio of the sample differs by one or more from that of the reference materials from which the calibration is obtained.
| Author | : W. B. Searle |
| Publisher | : |
| Total Pages | : 5 |
| Release | : 1983 |
| Genre | : Petroleum products |
| ISBN | : 9780642079640 |
A thin film dilution sample preparation technique for the determination of sulphur in petroleum products is described. An internal control standard compensates for variations in oil film thickness. The procedure utilises a mixture of sample and an alkyd resin to improve adhesion to a Mylar substrate and to reduce sample flow during irradiation. The method is quantitative and has good repeatability for sulphur contents up to 5%. Accuracy is comparable with that obtained by chemical methods. The detection limit for sulphur was estimated to be 0.03%.
| Author | : British Standards Institute Staff |
| Publisher | : |
| Total Pages | : 16 |
| Release | : 2003-08-14 |
| Genre | : |
| ISBN | : 9780580424007 |
Petroleum products, Petroleum, Chemical analysis and testing, Determination of content, Sulfur, X-ray fluorescence spectrometry, Calibration, Sampling methods, Reproducibility, Gasoline, Residual oil, Lubricating oils, Precision
| Author | : |
| Publisher | : |
| Total Pages | : 780 |
| Release | : 1985 |
| Genre | : Power resources |
| ISBN | : |
| Author | : Harald Behrens |
| Publisher | : Walter de Gruyter GmbH & Co KG |
| Total Pages | : 592 |
| Release | : 2018-12-17 |
| Genre | : Science |
| ISBN | : 1501508377 |
Volume 73 of Reviews in Mineralogy and Geochemistry represents a compilation of the material presented by the invited speakers at a short course on August 21-23, 2011 called Sulfur in Magmas and Melts and its Importance for Natural and Technical Processes held at the Hotel der Achtermann, in Goslar, Germany following the 2011 Goldschmidt Conference in Prague, Czech Republic. It covers Studies of sulfur in melts - motivations and overview, Analytical methods for sulfur determination in glasses, rocks, minerals and fluid inclusions, Spectroscopic studies on sulfur speciation in synthetic and natural glasses, Diffusion and redox reactions of sulfur in silicate melts, The role of sulfur compounds in coloring and melting kinetics of industrial glass, Experimental studies on sulfur solubility in silicate melts at near-atmospheric pressure and Modeling the solubility of sulfur in magmas: a 50-year old geochemical challenge.
| Author | : Shifeng Dai |
| Publisher | : MDPI |
| Total Pages | : 383 |
| Release | : 2018-07-04 |
| Genre | : Science |
| ISBN | : 3038426229 |
This book is a printed edition of the Special Issue "Minerals in Coal" that was published in Minerals
| Author | : |
| Publisher | : |
| Total Pages | : 1052 |
| Release | : 1977 |
| Genre | : Fossil fuels |
| ISBN | : |
| Author | : James G. Speight |
| Publisher | : CRC Press |
| Total Pages | : 797 |
| Release | : 2016-10-26 |
| Genre | : Science |
| ISBN | : 1315356503 |
Petroleum refining involves refining crude petroleum as well as producing raw materials for the petrochemical industry. This book covers current refinery processes and process-types that are likely to come on-stream during the next three to five decades. The book includes (1) comparisons of conventional feedstocks with heavy oil, tar sand bitumen, and bio-feedstocks; (2) properties and refinability of the various feedstocks; (3) thermal processes versus hydroprocesses; and (4) the influence of refining on the environment.
