Preview

Determination of Iron in Natural Water by Spectrophotometry.

Powerful Essays
Open Document
Open Document
1654 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Determination of Iron in Natural Water by Spectrophotometry.
Title: Determination of Iron in Natural water by Spectrophotometry.
Aim: To determine the iron in natural water by spectrophotometry.
Abstract: The iron in natural water was determined by utilizing spectrophotometric analysis. That was done by measuring the absorbance of five Fe(oPH)2+3 standards at 510 nm. From that information, a calibration curve was plotted and used to find the amount of Fe2+ that was in two unknown water samples based on the absorbance readings obtained with them at 510nm. The equation of the line was found to be y=0.1765x + 0.0705. It was then determined that there was no iron present in water sample A, while for water sample B, the iron was present in the proportions of 0.9037ppm, 1.614x10-5M and 9.037x10-3%.
Introduction: Spectroscopy is the study of the interaction of light or electromagnetic radiation with matter. Spectrophotometry is any technique that uses light to measure chemical concentrations. Electromagnetic radiation is a form of energy when reacted with matter, can be absorbed, reflected or refracted, and how EMR reacts with matter depends on the properties of the material, based on the frequency, wavelength, absorbance etc. The electromagnetic spectrum shows representative molecular processes that occur when light in each region is absorbed. The visible spectrum spans the wavelength range 380-780nm, so each region is absorbs at different wavelengths.
The red-orange complex that forms between Iron (II) and 1,10-phenanthroline is useful for the determination of iron in water supplies. The reagent is a weak base that reacts to form phenanthrolinium ion in acidic media. The red-orange complex that forms between iron(II) and 1,10-phenanthroline (orthophenanthroline) is useful in determining iron in water supplies. The reagent is a weak base that reacts to form phenanthrolinium ion, phenH+, in acidic media.
A commonly used method for the determination of trace amounts of iron involves the complexation of Fe2+ with



References: Skoog and West, Fundamentals of Analytical Chemistry, 2nd Ed., Chapter 29. Vogel, A Textbook of Quantitative Inorganic Analysis, 3rd Ed., p. 294, 310 and 787.

You May Also Find These Documents Helpful

  • Good Essays

    Equilibrium Reaction

    • 615 Words
    • 3 Pages

    The FeSCN2+ complex ion has a blood red color while the iron and the thiocyanate ion are colorless. Therefore, the shift in the reaction can followed by noting a change in the intensity of the clood red color, which indicates a change in the concentration of the complex ion FeSCN2+. If the reaction shifts to the right, the blood red color will get darker because there is more FeSCN2+ present after the shift. If the reaction shifts to the left, the color will get lighter because there is less FeSCN2+.…

    • 615 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Purpose: Be able to tell the difference between iron (II) and iron (III) solutions by performing redox reactions between irons oxidation states.…

    • 351 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    post lab of cucl2

    • 732 Words
    • 3 Pages

    II. Purpose: The purpose of this lab is to see how iron reacts with a copper (II) chloride solution.…

    • 732 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    The purpose of this lab was to calculate the equilibrium constant for the reaction of iron (III) ions with thiocyanate ions.…

    • 1137 Words
    • 8 Pages
    Powerful Essays
  • Satisfactory Essays

    Iron (IIII) and copper (II) sulfate solution
Fill a small test tube halfway with copper (II) sulfate solution. Add a 2.0 gram iron rod to the solution and observe the reaction.…

    • 348 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    fdsg

    • 2112 Words
    • 9 Pages

    Q5. In this assessment you will analyse the iron content of the fertiliser using a redox titration. Describe another way an analysis for iron could be performed.…

    • 2112 Words
    • 9 Pages
    Good Essays
  • Better Essays

    Mixture Analysis Lab

    • 1046 Words
    • 5 Pages

    An unknown sample, # 12-Green, was separated into its individual variable components, iron, ammonium chloride, silicon dioxide, and sodium chloride. The techniques used to separate the components of unknown # 12-Green, magnetism, sublimation, extraction, and filtration, were chosen based on the unique properties of each component. Using these separation techniques, each substance was extracted and the composition of unknown # 12-Green was 16% Fe, 15% NH4Cl, 59% SiO2, and 9% NaCl with a 1% uncertainty due to the loss of 0.0369g of the initial mass.…

    • 1046 Words
    • 5 Pages
    Better Essays
  • Good Essays

    CHEM 165

    • 567 Words
    • 4 Pages

    When iron comes in contact with water it corrodes and rust is a byproduct. (16 pts.)…

    • 567 Words
    • 4 Pages
    Good Essays
  • Good Essays

    A calibration curve for the ionic Iron and FerroZine® complex solution with absorbance values ranging from 0.1 to 1.5 absorbance units was made using the aforementioned concentrations of stock ionic Iron. This was done with an Agilent technologies CARY60-UV-Vis spectrophotometer with an optimum wavelength of 562…

    • 458 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 390 Words
    • 2 Pages

    The new product is iron (III) sulfate, it contains the Fe 3+ ion which is brown.…

    • 390 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Laboratory 8. Spectroscopy

    • 1159 Words
    • 5 Pages

    Spectroscopy is the study of matter interacting with electro-magnetic radiation (e.g. Light). In this lab, we will separate some light sources in to constituent colors and find out the wavelength of some atomic emissions. We will also try to compare the line spectra found from gas discharge tubes and flame emissions. Finally, we will measure the absorbance of Copper sulfate solution as a function of wavelength.…

    • 1159 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Iron is a vital constituent of plant and animal life, and is the key component of haemoglobin.…

    • 279 Words
    • 2 Pages
    Satisfactory Essays
  • Best Essays

    Spectroscopy is the study of light. A spectrophotometer is a machine used to determine the absorbance of light at any given wavelength. It does this by using a source of white light through a prism, which gives multiple wavelengths that can be individually focused (Ayyagari and Nigam, 2007). Substances are put into cuvettes that are glass or quartz containers that light can easily travel through. The light that is being focused travels through the substance gets absorbed by the substance and is reflected back and read by galvanometer which had the ability to detect electric currents (Verma, R). The absorbance reading is then given, absorbance is usually between 0.0 – 2.0, any higher than 2.0 may mean not enough light is getting through to the galvanometer (Bhowmik and Bose, 2011). When using the spectrophotometer it is necessary to use a control or blank to zero or tare the machine in between every new wavelength or concentration, this control is water (Ayyagari and Nigam, 2007). The correlation between the numbers acquired through spectroscopy can be seen using the Beer- Lambert Law. The Beer- Lambert law states that the amount of light absorbed at a certain wavelength is proportional to the concentration of the absorbing substance (Fankhauser, 2007).…

    • 2210 Words
    • 9 Pages
    Best Essays
  • Satisfactory Essays

    Tell Me About Blood

    • 562 Words
    • 2 Pages

    Iron- an essential component of hemoglobin (the protein complex within erythrocytes that binds with oxygen)…

    • 562 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Asdadfasfd

    • 1472 Words
    • 6 Pages

    (2)The author points out many ways in which iron impacts life. Identify/describe at least five. 1. Hemoglobin to carry oxygen 2. oceans "seeded" with iron can hold more oxygen producing organisms. 3. Parasites feed on human iron. 4. Cancer cells thrive on human iron 5. High levels of iron can counter-act the effects of antibiotics, by feeding the bacteria to the point that they can live despite the antibiotics…

    • 1472 Words
    • 6 Pages
    Powerful Essays