Allura Red Dye Lab Report

Introduction: Quetiapine Fumarate (QF) is a psychotropic agent indicated for the treatment of schizophrenia and manic episodes associated with bipolar disorder. QF possesses good solubility in aqueous fluids (1) and ethanol. Quetiapine is available in the market with the brand name of Seroquel XL (2). Inadvertent, rapid drug release in a small period of time of the entire amount or a significant fraction of the drug contained in a prolonged release dosage form is often referred to as “dose dumping”. Jhonson F. et al.

Sarah Everett CHEM 316 Monday 12-3:50 February 15, 2017 Analysis of Copper in a Penny by Atomic Absorption Spectroscopy and Ultraviolet-Visible Spectroscopy Introduction: The United States cent coin, also known as the penny, was originally composed of pure copper from 1793 to 1837 and the composition of copper in the penny has been diminishing since. For the next 145 years, the penny’s copper composition wavered between 95% and 88% until 1982 where the copper composition was reduced to 2.5% while the rest of penny was composed of 97.5% zinc.

Record the amount of absorbance by converting transmittance every 5 minutes for a total of 20 minutes. Repeat all of these steps for the cantaloupe, banana, replacing the blank each time to recalibrate the spectrophotometer. After recording all the percent transmittance value, the data was then converted into absorbance value by using the absorbance conversion table. The information was placed on a plotted graph

In 1666, at the age of 23 Sir Isaac Newton made a study on colour and his behaviour. He directed sunlight into a prism and noticed that seven colours were projected from the other side. He also Double-checked that the prism was not colouring the light. His study changed the world’s understanding of light and colour. He was also the first to understand the rainbow, he also told the fact that white light is light containing all wavelengths of the visible spectrum with the help of his experiments on the dispersion of light in glass prisms.

The third peak consisted of all four colors and finally the large peak consists of green and blue. Orange dyes would probably have the more noticeable peaks at the shorter wavelengths because both red and yellow both have peaks at the shorter wavelengths. Purple dyes would most likely have one distinct peak for a short wavelength and then one distinct peak for the longer wavelength because red has peaks at short wavelengths and blue has peaks at long wavelengths. The data observed looks almost nothing like the D2L data.

INTRODUCTION: Drotaverine is chemically1-[3,4 –diethoxyphenly)methylidene]-6,7-diethoxy-3,4-dihydro-2H-isoquinoline:hydrochloride[1] and empirical formula is [C24H31NO4.HCL][4] has no anticholinergic effects and is used as antispasmodic drug.specific used for smooth muscle spasm and pain. Chemically Ethamsylate is N-ethylamine2,5dihydroxybenzenesulphonate [2]. belongs to class of haemostatic compound that blocks prostacycline synthetase, an enzyme that converts arachidonic acid to Prostacycline and therefore increases platelet aggregation and platelet adhesiveness.

The pigments differ slightly in their chemical properties and subsequently in their relative ability to absorb light of different wavelengths. These cones are loosely called "blue", "green", and "red" as they are supposed reflect their peak sensitivities on

Dependent The time taken for the bluish -black color to fade away (color of Iodine solution mix with starch solution ). The rate of enzyme reaction Minutes (min) Table 1.1 – Table shows the controlled variables in the experiment variables Units Measures of controlled variables.

Through observation, it was noticed that certain panfish, living in murky water, were darker in color than other fish living in clear, light colored water. To test this observation, goldfish were placed in two containers, one containing blue food coloring and one without color. The fish were given five days in five drops of food coloring and five more days in ten drops of food coloring. At each increment, a photograph was taken of every individual fish and the orange pigmentation below the dorsal fin was compared to an interactive online color spectrum chart; the closest shade of orange was documented by wavelength. The fish in the food coloring expressed a slightly higher wavelength than those in the control water.

Use these results to determine the product concentration, using Beer-Lambert’s Law: A= ɛCl (where A is the absorbance, ɛ is the molar absorptivity, C is the product concentration and l is the length of solution that the light passes through). Calculate the product concentrations at every minute for 10 minutes for all 7 of the test tubes using Beer-Lambert’s Law. Plot a graph of product concentration vs. time and then use the gradients of the 7 test tubes to determine the velocities of the reaction. After calculating the velocities, plot a Michaelis-Menten graph of velocity vs. substrate concentration.

Effect of Fenton’s Reagent Parameters: Photo-Fenton’s process is highly sensitive to the initial H2O2, iron catalyst concentration and pH value. This reagent is extremely producer of .OH radicals and the reaction rate is limited by the .OH generation. Traditionally, hydroxyl radical has been viewed as the workhorse of hydrogen peroxide oxidation systems. Thus, the main source of OH radicals and oxygen depends on the hydrogen peroxide.

The 3 concentrations of enzymes were 0.5 ml, 1.0 ml, and 2.0 ml of turnip extract, while the substrate consisted of 0.1ml, 0.2 ml, and 0.4 ml of hydrogen peroxide. In a separate tube, the control was made up of turnip extract and guaiacol, known as the color reagent. This was recorded the absorbance every 20 seconds for 3 minutes.

Index 1. Introduction Spectroscopy is a term which refers to the interactions of various types of electromagnetic radiation with matter. It is also a study of the absorption and emission of light and other radiation by matter. Dependence of this process related to the wavelength of the radiation. Spectrometers are used to measure the properties of light over a specific portion of the electromagnetic spectrum.

The absorbance level @ 520 nm obtained from the spectrometer indicates the amount of urea obtained via measuring the absorbance of the light through the supernatant coloration, which was provided by the

1. INTRODUCTION TO MICROSCOPY A microscope is an instrument used to see objects that are very small for the naked eye. The science of examining small objects using such a tool is called microscopy. Microscopic means invisible to the eye except aided by a microscope. 2.