Tree resins are highly complex organic substances
that include compounds called terpenes.
The aim of this work is to describe the new complex of aluminium discovered in the organic substance
of selected bituminous and brown coals and their fractions through analysis of the solid phases of leaches and the solid residues after leaching.
At the temperature 350-400 [degrees]C the organic substance
of kukersite is converted into semiliquid state, called thermobitumen.
From the calculation of the affinities of metals to the organic and mineral part of Czech coals (5 samples of hard coal and 6 samples of brown coal) it follows that from 24 determined metal trace elements 17 exhibit a significantly high affinity to the organic substance
(OEA more than 70 %) (Tab.
Plant utilizes sunlight by photosynthesis and the plant body which is organic substance
is mainly produced from carbon dioxide and water.
3]' -- Choriatika Allantika Xipsitis Ltd -- contains more than the permitted levels of Polycyclic Aromatic Hydrocarbons (PAHs) which are a group of more than 100 different chemicals that are released from burning coal, oil, gasoline, trash, tobacco, wood, or other organic substances
such as charcoal-broiled meat.
The dispute over the manuscript dating is compelling--I am amazed that C-14 dating can now be considered so accurate, particularly given the frequent exposure of the manuscript to organic substances
in the centuries since its creation.
The experiments are grouped in sections on basic lab techniques, molecular modeling, properties and reactions of organic compounds, identification of organic substances
, and project-based experiments.
It is interesting to note that the list of substances contains 7 heavy metals (entries 1-7) and 15 organic substances
, including 5 phthalates (entries 8, 9 and12-14), formaldehyde, primary aromatic amines and vinyl chloride.
The Hohenstein Institute's test system assesses the degradation of organic substances
by microorganisms, water and oxygen in realistic conditions in the soil.
The technology efficiently removes persistent organic substances
in wastewater by using hydroxyl (OH) radicals generated through an electric discharge created at a gas/liquid interface.
At the same time, industrial waste water, for instance from chemical, pharmaceutical or cosmetics production, often has such a high level of toxic organic substances
that their degradation is not possible in a biological sewage plant.