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    A gas chromatograph (GC) can be utilized to analyze the contents of a sample quantitatively or in certain circumstances also qualitatively. In the case of preparative chromatography, a pure compound can be extracted from a mixture. The principle of gas chromatography can be explained as following: A micro syringe is used to inject a known volume of vaporous or liquid analyte into the head or entrance of a column whereby a stream of an inert gas acts a carrier (mobile phase). The column acts as a

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    Gas Chromatography

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    Gas Chromatography Purpose:      The purpose of the gas chromatography lab is to find out how different substances interact with the surface of a solid. Chromatography is a separation technique that depends on the relative distribution of the components of a mixture between a mobile phase and a solid stationary phase. Chromatography measures the tendency of a substance to interact with the surface of a solid or to remain in a mobile phase. When doing a chromatography lab the mobile

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    The Gas Laws

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    gasoline/air type of mixture to a new volume, compared to the volume it had when the piston was rotated to the top of its socket. The typical car has a 9 to 1 compressibility ratio, but this porsche has about 7 to 1 compressibility, which can mean the gas to air mixture in the cylinder is compressed by a factor of 7. The second Property I would like to outline in gases is expandability. Anyone who has walked into a bathroom where many people have just taken a number 2, have experienced the face that

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     High expectations on shale gas Thanks to the development of shale gas, natural gas production in the United States has rebounded and is at its highest level in almost 40 years. Exxon Mobil is the worldwide leader concerning the exploitation of this new resource. If we consider than more and more countries are willing to be less dependent upon the energy supply, due to its expertise, Exxon will be a worldwide key player in the exploitation of this energy. Sooner or later, new techniques will be

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    Global gas reserves and trends Natural gas - natural gas is a gas consisting primarily of methane (CH4). It is often informally referred to as simply gas or fuel gas, especially when compared to other energy sources such as electricity. It also contains varying amounts of higher molecular weight gaseous hydrocarbons, carbon dioxide, acid gases, and a few amounts of water and mercury. While the origins of natural gas deposits are not known clearly, and each reservoir has own geological history, it

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    Got Gas?

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    Got Gas? Oil is defined as “any of numerous unctuous combustible substances that are liquid or can be liquefied easily on warming, are soluble in ether but not in water, and leave a greasy stain on paper or cloth” (Merriam Webster Online Dictionary), but the United States of America knows it better as their source of transportation. Oil has many uses, but oil main use is for fuel in motor vehicles. Oil is found thousands of miles below the earth’s crust and is drilled for in many locations. When

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    Gas Laws

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    Gas Laws Since the days of Aristotle, all substances have been classified into one of three physical states. A substance having a fixed volume and shape is a solid. A substance, which has a fixed volume but not a fixed shape, is a liquid; liquids assume the shape of their container but do not necessarily fill it. A substance having neither a fixed shape nor a fixed volume is a gas; gases assume both the shape and the volume of their container. The structures of gases, and their behavior, are

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    Natural Gas

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    normal conditions and are known collectively as natural gas. Once this natural gas forms, it depends on two very critical characteristics of the surrounding rock: porosity and permeability. POPOSITY is referred to as the amount of empty space there is within the grains of the rock. Highly porous rocks like sandstones, on a good day have porosities of 5% to 25%. this gives them a large amount of space to store fluids like oil, water, and gas. PERMEABILITY is a measure of the degree in which the

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    Gas Gangrene

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    Gas gangrene is a severe form of gangrene which is also known as tissue death. It occurs as a result of infection by a bacterium that causes the tissue death. The symptoms of gas gangrene are numerous and severe. Gas gangrene is a disease that is very difficult to treat. All in all, gas gangrene is a very serious disease. Gas gangrene is a form of gangrene (tissue death) usually caused by a bacterium known as clostridium porringers, but many other bacteria can cause the same effects. It is caused

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    Volatile and thermally stable organic compound can be analyzed qualitatively and quantitatively using gas chromatography. The qualitative analysis obtained from the retention time, tR of the component while the quantitative analysis obtained from the peak area of chromatogram (Christian, 2004). The retention time refers to the time between the sample introduction and the elution from the column. The peak area of chromatogram shows the elution time at the x-axis and size of the detector signal at

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