This article presents a method for colour measurements directly on printed half-tone multicoloured pictures. The article introduces the concept of colour impression. By this concept we mean the CMY or CMYK vector (colour vector), which lives in the three-or four-dimensional space of printing inks. T
New method for sulphur concentration measurements in coal and char
β Scribed by Peter R. Solomon; Arch V. Manzione
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 1019 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
β¦ Synopsis
A new method has been developed for determining the organic sulphur concentration and the stoichiometry of iron sulphide compounds in coals and chars. The method employs a scanning electron microprobe which separates the contribution from different sulphur forms by examining the differences in their spatial distribution. The method is rapid, requires only small samples, and is non-destructive; so results may be repeated. In addition, a knowledge of the sulphide stoichiometry in a char and the original sulphide concentration in the coal yields the sulphide concentration in the char. Application of this method for sulphur measurements in more than thirty coals has yielded results in good agreement with results obtained with ASTM methods.
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