نتایج جستجو برای: organic components
تعداد نتایج: 583132 فیلتر نتایج به سال:
This paper presents results of an aerosol chemical characterisation experiment conducted on the Island of Jeju, Korea, using a range of techniques for analysing inorganic and organic particle components. Sulphate and ammonium were biased toward the accumulation mode size ranges. Nitrate, sodium, calcium and chloride were found in the larger size ranges and attributed to the collection of modifi...
An ionic liquid was used in this work to dissolve rice straw at 90 °C explore the dissolution of cellulose, lignin, and hemicellulose different treatment times. Compared with traditional methods, method involved short time high efficiency. The residual amounts multiple substances were evaluated periods. results showed that rate triglyceride fats, water-soluble pectin, lignin reached their maxim...
objective: soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure. so, this research has been done for achieving this purpose. methods: this...
Diagenetic changes are difficult to distinguish from variations in sources of organic matter to sediments. Organic geochemical comparisons of samples of wood, bark, and needles from a white spruce (Picea glauea) living today and one buried for 10,000 years in lake sediments have been used to identify the effects of diagenesis on vascular plant matter. Important biogeochemical changes are eviden...
Recently, several measurements have indicated the presence of biologically active organic micropollutants or trace components in different types of waters, including spa and medicinal waters. The wide spectrum and abundance of organic components of spa waters in the Carpathian basin and other European regions has been demonstrated by gas-chromatographic analyses. These components may have main ...
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