Chromatography • • • Separation based on polarity of compounds Two potential phases for a compound to exist in: mobile and stationary Partitioning of compounds between mobile phase and stationary phase occurs: o Compounds that are less polar move more in the mobile phase‚ those that are more polar “stick” more on the stationary phase o These polarity differences cause compounds move at different rates and therefore can be separated 1. Mobile Phase: the phase the moves; can be gas or
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Gas chromatography (GC) is a chromatography technique where the separation of individual components (analytes) from a sample relies on their differing distribution between a mobile and stationary phase. The mobile phase carries the analytes through the stationary phase. In GC‚ it’s an inert gas (usually helium or nitrogen). The gas must be inert‚ so it won’t react with the sample to give a false reading. The stationary phase is a substance fixed in place to which the sample adsorbs because
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Review Bubble column reactors Nigar Kantarcia‚ Fahir Borakb‚ Kutlu O. Ulgena‚* aDepartment of Chemical Engineering‚ Bog˘azic¸i University‚ 34342 Bebek-Istanbul‚ Turkey bDepartment of Chemical Engineering‚ Yeditepe University‚ 34755 Kadikoy-Istanbul‚ Turkey Received 31 August 2004; accepted 26 October 2004 Abstract Bubble columns are intensively used as multiphase contactors and reactors in chemical‚ biochemical and petrochemical industries. They provide several advantages during operation
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Exchange Chromatography Week 10 TAG Question 1: Chapter 6-4 of your technique book provides a detailed description of how to run a ion- exchange column. Assume you have a cation-exchange column already prepared and ready to use. Create an outline of no more than 10 steps describing how you will regenerate the column‚ load your sample and collect the hydronium ion released. 1. Open the stopcock at the bottom of the column and allow solution to drain out until the solution level in the column is
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Backgrounds of monuments in order of year built‚ Trajan’s Column was designed by the architect Apollodorus of Damascus and commissioned by the Roman Senate in 107‚ it took six years to be built‚ therefore‚ the column was completed in 113 DA. The column measures 126 feet high and it used to end with a bronze statue of Trajan. The carvings on the tower represent different scenes of the narrative of the Dacian campaigns and wars‚ depicting different experiences his soldiers went through in different
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EXECUTIVE SUMMARY: The main objective of this project was to carry out a design on the Propane distillation column for a process that produces 1‚3 Butadiene. The raw materials used are Butane‚ Oxygen and Water and the process capacity is 100 000 tonnes per annum nominal. In the previous work it was stated that the plant is located in China. The main location of the plant is in the capital city of the Gansu Provence‚ Lanzhou. This was decided as the location over other provinces due to the excellent
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Winogradsky column description Introduction The experiment of Winogradsky column is to observe microbiology interaction of microbes using pond mud. The aim of this paper is to describe structural and chemical features in Winogradsky column and to show the acknowledgement of microbial cells in Winogradsky column. Materials of experiment Pond mud Calcium sulfate Calcium carbonate Shredded paper Pond water Cylinder Aluminum foil Methods 1. Prepare pond mud 2. Add calcium sulfate
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able to experimentally analyze and isolate amino acids by separation techniques. One such method of separation is thin layer chromatography (TLC). In this method‚ a silica coated aluminum plate is spotted with the solution being separated‚ and the plate is placed in a developing jar containing a small amount of solvent. With time‚ the solvent
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Resonating Air Column Expt. # 8‚ Physics 105‚ fall 2010 (reference only) Aim: To determine the speed of sound in air at room temperature using resonating air column (1). Apparatus: Resonance apparatus‚ four tuning forks‚ rubber mallet micrometer caliper‚ can of water and paper towels (1). Description of the apparatus: The apparatus consists of a 110 cm long uniform graduated glass tube of 1(1/2) diameter connected to a rubber tubing and a water
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I. Column Oriented Database A column-oriented DBMS is a database management system (DBMS) that stores data tables as sections of columns of data rather than as rows of data. In comparison‚ most relational DBMSs store data in rows. This column-oriented DBMS has advantages for data warehouses‚ customer relationship management (CRM) systems‚ and library card catalogs‚ and other ad hoc inquiry systems where aggregates are computed over large numbers of similar data items. It is possible to achieve
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