Introduction: Gas chromatography is an instrumental method for the separation and identification of chemical compounds. Chromatography involves a sample (or sample extract) being dissolved in a mobile phase (which may be a gas, a liquid or a supercritical fluid). The mobile phase is then forced through an immobile, immiscible stationary phase. The phases are chosen such that components of the sample have differing solubility’s in each phase. A component that is quite soluble in the stationary phase
Analysis of Amines by EMIT, TOXI-Lab, and Gas Chromatography/ Mass Spectroscopy Anthony Cappellano Marta Concheiro-Guisan FOS 416 6 May 2015 Introduction A variety of techniques can be used to determine the presence of amphetamines and methamphetamines within a given urine sample. These methods include EMIT screening, Toxi-Lab, and GC-MS. EMIT screening can be used to determine the presence or absence of amphetamine and methamphetamines in a urine sample. EMIT works on the basic
Emma Sullivan Mr. Sousa Organic Chemistry 17 Jan 2015 Chromatography: Midyear Project Introduction: Chromatography in a simplistic definition is a broad range of physical methods used to separate organic or inorganic substances so that they can be analyzed and studied. By studying the substances, they can figure out what makes up the compound even though they may appear homogenous. The components being separated go through two phases called stationary phase and mobile phase. The mobile phase flows
Chromatography is an approach/ method used in scientific labs to isolate mixtures by passing it in solution through a substance that causes the different molecules to move at varying/different rates. (Wixom and Gehrke, 2010) The medium through which the solution travels across has the various solutes ascending at different rates. On the medium, this appears as a separation of the compounds within the mixture. In this specific experiment, chromatography was used to understand the pigments in photosynthetic
4.1 Introduction: Eplerenone is marketed by Pfizer as inspra. It acts as aldosterone Opponent used to treat congestive heart failure.It acts as potassium-sparing diuretic also. It is used in the treatment of diabetic neuropathy in combination with enalapril (10). It acts by rising the levels of aldosterone in the plasma.it has also high water retaining capacity.It deals with the sodium reabsorption and possibly other mechanisms (9). The absolute bioavailability of the Eplerenone is unknown. It is
Title: Intoxication of Saxitoxin and its detection in bivalve shellfish 1. Background and Introduction Saxitoxin is one type toxin of the Paralytic Shellfish Poisoning (PSP)， which is a highly poisonous. There is lots of PSP toxins outbreak in Hong Kong. According the Centre of Health Protection (CHP) reported, there were 42 cases of PSP in 2005 and affected 70 people, 3 cases of PSP in 2006 and affected 5 people and 5 cases of PSP in 2007 (as of 6 Jun 2007 ) and affected 9 people. [1] The PSP toxins
Comparing M&M’s Dye to Food Dye Lab Report Wright State University General Chemistry Zachary Ewing 19M Jamie Jackson Purpose: The purpose of this lab was to understand the technique of Chromatography and its two phases, awhile also observing Chromatography in action with the different M&M’s coloring and the different food dyes. Introduction: Chromatography can be described as multiple methods to separate and examine of colorful mixtures. Chromatography contain two different phases, mobile
Chemistry II Laboratory October 10th, 2014 Introduction The purpose of the chromatography lab is to separate mixtures using horizontal paper chromatography and ascending chromatography. Using these methods the individual colors within a black dye will be separated and two unknown metal ions in can be identified from a solution. Skills required for this lab are analyzing, identifying unknown separable mixtures. Paper chromatography works majorly on capillary attractions. Capillary attraction depends on
Drinks OBJECTIVE: 1-To become familiar with the practice of high-performance liquid chromatography (HPLC). 2-To determine the caffeine and benzoic acid concentrations in various soft drinks. Chromatographic techniques are widely used in all areas of science because they allow the analyst to separate and quantify the components of a mixture. In this experiment you will use high-performance liquid chromatography (HPLC) to determine the amount of caffeine and benzoic acid in a soft drink. The principle
what is chromatography? Chromatography, invented by Russian botanist M.S. Tswett in 1903, comes from the Greek word khroma meaning colour. It is a separation technique in which different pigments of an organic or inorganic substance may be isolated and viewed independently on the chromatogram by passing a sample through a medium in which the constituent parts move at different rates. It can be defined as “Chromatography is usually introduced as a technique for separating and/or identifying the