High Performance Liquid Chromatography Lab

Improved Essays
High Performance Liquid Chromatography Lab Abstract

High performance liquid chromatography or HPLC is the process in which mixtures are physically separated according to their polarity. The lab conducted, the separation of dyes in grape Kool-Aid, demonstrated the concept. This was done to display how different alcohols and their concentrations have different polarities, in which ties into HPLC. The lab consists of testing Kool-Aid, water, and different concentrations of methanol and isopropanol; 5%, 20%, and 60%. To start, one must pour 10 ml of the Kool-Aid into a syringe that was connected to a C-18 absorbent. The plunger that came with the syringe will then be pushed through into a labeled test tube designated for the substance. Once

Related Documents

  • Improved Essays

    6.03 Ph Lab

    • 2243 Words
    • 9 Pages

    Start off by adding 10mL of H2O, 0.1 M NaCl, buffer with a high pH, and buffer with a low pH to separate test tubes. Pour 2mL of the red cabbage indicator to 4 test tubes or the use of a pH meter and record the value. Start by adding and measuring 5 drops of 0.1 M HCl solutions to each of the 4 test tubes from part one and mix. Find the value and record. Add 5 more drops of the HCl to each test tube from part 2 and mix.…

    • 2243 Words
    • 9 Pages
    Improved Essays
  • Improved Essays

    1. Make sure you have all of your materials ready and labelled to limit confusion and cross contamination (recommended: have separate pipettes for each respecting substance) 2. Blend your calf liver and divide the puree into 3 different separate cups measured 2g each – add 3 drops of water to each cup as well 3. In cup labelled “NaOH” add 6 drops of sodium hydroxide onto calf liver with the pipettes, then add 2ml of H2O2 (hydrogen peroxide) soon after – watch and record results in observation table 4.…

    • 165 Words
    • 1 Pages
    Improved Essays
  • Improved Essays

    The purpose of this experiment was to discover if Crayola Washable Markers are really nontoxic, or even as safe as the dyes used in food. To answer this question, we used paper chromatography to identify the dyes in blue, orange, and green Skittles Sweets and Sours candy and Crayola Washable Markers. In this paper chromatography experiment, the mixture to be separated was spotted 1.5 centimeters from the bottom of chromatography paper, which was then dipped in the solvent, a 0.1 percent salt solution. The solvent then moved up the filter paper via capillary action and carried the mixture's pigments with it (Rosen and Gothard, 2010). Each pigment has a unique retention factor or Rf, a ratio between how far a pigment travels to the distance…

    • 605 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Task 3 P1 When using thin layer chromatography (TLC) to test for purity of aspirin it is a quick and simple method. Firstly when using the TLC method you need to have a TLC sheet and mark on the sheet 0.5cm up on the sheet and draw a line, make sure you don’t press too hard on the paper as this will disrupt the absorbent on the paper. You need to make sure the samples have been marked on the paper so you don’t get mixed up and leave a gap between the aspirin samples so they don’t run together as this will give an inaccurate result. Next get a 1% concentrated sample of a known purity of salicylic acid as this is suitable for the TLC analysis, then obtain a small glass rod (micro capillary) and use this to dip in the solution and on to the paper in the position where the sample of aspirin is named.…

    • 408 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Thin-Layer Chromatography Lab 11/12/14 Beginning Question To what extent does the polarity of a substance affect the distance it travels during TLC using water as the solvent? Safety Concerns The substances used during the TLC process could possibly be dangerous, so it would be best to avoid getting them on the hands.…

    • 692 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Gram Staining Lab

    • 801 Words
    • 4 Pages

    Bacteria cells are taken from the culture and literally stabbed into a gelatin medium using either an inoculating needle or loop. If the bacteria contains enzymes called proteases, the enzyme will break down the proteins found in the gelatin and will leave a liquid residue in the tube. If the bacteria contains no protease enzymes, no liquid will be formed and the gelatin media will appear unchanged. The bacteria tested created liquid in the tube which proved it was positive for the gelatin stab test and possessed the enzyme protease.…

    • 801 Words
    • 4 Pages
    Improved Essays
  • Decent Essays

    Introduction The purpose of experiment was to identify an unknown analgesic drug using thin-layer chromatography (TLC). Using the thin-layer chromatography to determine the composition of the Acetaminophen, Aspirin, Caffeine and Salicylamide, then compared with unknown analgesics. Experiment Scheme Acetaminophen Aspirin Caffeine Salicylamide C8H9NO C9H8O4 C8H10N C7H7NO…

    • 549 Words
    • 3 Pages
    Decent Essays
  • Improved Essays

    Thin Layer Chromatography

    • 196 Words
    • 1 Pages

    I. Thin Layer Chromatography also known as TLC, is a method of separation that is used to help identify and distinguish the parts of a substance. In the process, a thin plate covered with an absorbent material such as silica gel, also known as the stationary phase, is used and placed within the substance, or the solvent, that is to be separated, allowing it to be absorbed and divided in different parts along the plate. TLC is a common chemistry practice used within many industries such as forensics, in pharmaceuticals and the production of pesticides, but it also can be used in the analysis of color. Markers, although each one seemingly a homogeneous color, are in fact a composition of a multitude of colors that help to give the marker…

    • 196 Words
    • 1 Pages
    Improved Essays
  • Superior Essays

    Thin Layer Chromatography

    • 1059 Words
    • 5 Pages

    Introduction Thin-layer chromatography, otherwise referred to as TLC, is a fast and inexpensive way to determine the amount of components in a solution or to identify an unknown compound. The principal behind TLC is when different compounds are placed on silica gel or alumina, (stationary phases) they will travel different distances when eluted with the proper solvent. According to ChemistryGuide, this is because the more polar compound has a stronger interaction with the silica gel due to its polar properties. This makes it easier to drive the eluent away from its binding area. An eluent is a liquid that allows a sample to move with it, from one place to another.…

    • 1059 Words
    • 5 Pages
    Superior Essays
  • Great Essays

    b. Add two drops of 6.0M HCl(aq), 0.5mL 10% Hydroxylamine-HCl, six drops 2.0M Sodium Acetate, and 1.0mL 0.1% 2,2-Dipyridyl solution to the test tube. c. Fill the test tube to the 10mL mark with DI water and the color will fully develop in 15 minutes d. Prepare the four other standard solutions with appropriate amounts of the solutions. 9. The sample uses 2.0mL from the volumetric flask with the dissolved Fe and add the appropriate reagents. 10.…

    • 1251 Words
    • 6 Pages
    Great Essays
  • Decent Essays

    Cheyenne Wilson 5.05 LAB REPORT CANDY CHROMATOGRAPHY BACKGROUND INFORMATION: Paper chromatography is a widely used method of separation. The lab will show the basic techniques of paper chromatography. In this lab, the separation of the dyes used in two different kinds of candy is performed.…

    • 618 Words
    • 3 Pages
    Decent Essays
  • Improved Essays

    Abstract This experiment involved an electrophilic aromatic substitution of bromobenzene. Two products were formed: 4-nitrobromobenzene (4-NBB) and 2-nitrobromobenzene (2-NBB). Utilizing column chromatography and recrystallization, separation and purification of the two products was obtained. The mass of 4-NBB, the para product, was 1.57 grams, while the mass of 2-NBB, the ortho product, was 0.80 grams.…

    • 1570 Words
    • 7 Pages
    Improved Essays
  • Improved Essays

    The main advantages of the NEMI symbol assessment method are the simplicity of the assessment and reading the score, one fast look at the pictogram will be enough to have a general information about the environmental impact of a procedure. However, the drawbacks of this method are non-consideration of the amount of chemicals used in the analysis and the waste generated (qualitative rather than quantitative analysis) and the obtained information is general. In addition, the search of each chemical used in the procedure in official lists is inconvenient and time wasting [155 - 157]. An improvement to the NEMI pictogram was proposed by de la Guardia and Armenta [82].…

    • 1002 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    1.5 ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY (UPLC) Since from thirty years, High performance liquid Chromatography (HPLC) is well accepted technique used in laboratories worldwide. It is one of the analytical techniques used to identify, separate and quantify each analyte in a mixture. One of the primary drivers for the development of this technique has been the progression of the packing materials (particle size, packing technology, chemistry) used to impact the separation. The fundamental principles of this progression are governed by the Van Deemter equation.…

    • 927 Words
    • 4 Pages
    Improved Essays
  • Superior Essays

    Cyclograosus Essay

    • 1575 Words
    • 7 Pages

    If too much of the sample liquid entered the capillary tube, some was removed by lightly tapping the tube on a paper towel. In each of the capillary tubes the sample liquid was moved to the middle of the tube by lightly tapping it; once the liquid was in the middle both ends of the tube were sealed by plugging both ends with some Vaseline. The capillary tubes were then arranged in sequence along the tube holder with a space between the 3 groups. The alcohol bath was then prepared by placing dry ice into it in order to lower the temperature to around -15°C. Gloves or paper towels were used to handle the dry ice.…

    • 1575 Words
    • 7 Pages
    Superior Essays