Organic matter 700 INDEX

Another variation of the preceding method is to apply HPLC to fractionate the cleaned-up aliphatic-aromatic fraction from flash colurim separation of soluble organic matter as it is performed in the Chevron laboratory, for example, as described in Reference 2. A Waters HPLC system equipped with a preparative Whatman Partisil 10 silica column (9.4 X 500 mm), a HPLC pump, and two detectors for separation monitoring (a UV and refractive index detector) are used, giving three fractions of aliphatic hydrocarbons, mono-, di-, and triaromatics and polar compounds. The hrst two fractions are eluted with hexane, whereas polar compounds are eluted with... 

Fig. 8.47 Phenanthrene adsorption-desorption hysteresis observed for Lachine and Chelsa humic acid aggregate the hysteresis index is given by n. Reprinted from Huang W, Peng, P. Yu, Z. and Fu J (2003) Effects of organic matter heterogeneity on sorption and desorption of organic contaminants by soils and sediments. Appl Geochem 18 955-972. Copyright 2003 with permission of Elsevier...

Organic matter in the Carboniferous deposits mainly represents the humus type with vitrinite as a main component. The Ro index measured on the authigenic vitrinite increases towards the bottom of the deposits from 0.49 to 1.15% (Grotek 2005). These data point to a maximum palaeotemperature of about 120°C. 

SOM, soil organic matter HS, humic substances DH, degree of humification HAC, humic acid C FAC, fulvic acid C TEC, total extractable C HR, humification rate HI, humification index NHC, nonhumified C TOC, total organic C HA, humic acid FA, fulvic acids UV-Vis, ultraviolet-visible FT-IR, Fourier transform infrared NMR, nuclear magnetic resonance ESR, electron spin resonance EEM, excitation-emission matrix. 

Bostick, N. H. Nicksic, G P. Bibliography and Index of Coal and Dispersed Organic Matter in Sedimentary Rocks Petrography, Catagenesis, Relation to Petroleum and Natural Gas and Geochemistry, Illinois State Geological Survey Urbana, HI. 1975 92 pp. 

Vostokov SV, Lisitsyn BE, Konovalov BV, Soloviev DM, Gagarin VI (2002) Mesoscale variability of chlorophyll a concentration, particulate organic matter content and spectral index of light absorption by phytoplankton in the upper layer of northeastern part of the Black Sea. In Zatsepin AG, Flint MV (eds) Multi-disciplinary investigations of the northeastern part of the Black Sea. Nauka, Moscow, p 235 (in Russian)... 

In drinking water, color may be used as an index of large quantities of organic chemicals from plants and soil organic matter. Metals such as copper, iron, and manganese may also introduce color (Table 13.8). 

Soil % Organic Matter % in Solution % Sorbed Ratio h Sorption Index 0... 

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