Inorganic constituents analysis

Toxic-Inorganic Liquid Chemical pH Constituent analysis Oil and grease content Total suspended solids Total dissolved solids... 

The presence and concentration of various metallic elements in petroleum coke are major factors in the suitability of the coke for various uses. In the test method (ASTM D5056), a sample of petroleum coke is ashed (thermally decomposed to leave only the ash of the inorganic constituents) at 525°C (977°F). The ash is fused with lithium tetraborate or lithium metaborate. The melt is then dissolved in dilute hydrochloric acid and the resulting solution is analyzed by atomic absorption spectroscopy to determine the metals in the sample. However, spectral interferences may occur when using wavelengths other than those recommended for analysis or when using multielement hollow cathode lamps. 

Two types of component are important for this purpose inorganic constituents and oiganic residues. However, despite a great deal of effort worldwide, using the most sophisticated (and expensive) instrumentation, including neutron activation analysis, mass spectrometry, X-ray and infrared techniques, and a variety of chromatographic techniques, problems persist in the development of methods for routine applications. 

Toxic-Inorganic Liquid Gas Chemical Pretreatment required to get to liquid phase for chemical treatment or solid phase for solidification/ stabilization pH Constituent analysis Oil and grease content Total suspended solids Total dissolved solids... 

Any CRM for chemical composition is suitable for the purpose of trace analysis if it is certified for trace constituents and minimum sample mass, which guarantees that the homogeneity of the material is appropriate for the analytical method used in a laboratory. Taking into account the matrix, it if often useful to distinguish the following main classes of reference materials for chemical composition for inorganic trace analysis ... 

Water samples collected for determination of inorganic constituents were processed in the field and shipped to the USGS National Water Quality Laboratory for analysis (Fishman, 1993 Fishman and Friedman, 1989 Garbarino, 1999). Filtered samples were collected after passing through a... 

Table I. Analysis of Inorganic Constituents in Colorado Oil Shale...

These results are in good agreement with those of Glick and Davis (75) who made a comprehensive statistical analysis of the inorganic constituents in 335 whole-seam samples (The Pennsylvania State University Coal Sample Bank). In addition to those minerals listed here in Table V, Glick and Davis distinguished gypsum (all sulfates) and kaolinite. They found the content of kaolinite was mostly less than 15% of the minerals extracted by LTA in coals from the Western Interior Basin and the Illinois Basin as compared to coals from the Appalachian and western basins where kaolinite mostly comprised more than 15 percent of the LTA. 

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