1.1 DETECTION OF Hg2+ Refer(1) Why is detection of Hg2+ important?? Mercury contamination poses severe health risks. It can enter into environment through natural as well as human activities. Once it enters marine environment‚ bacteria convert inorganic mercury to methyl mercury which enters food chain and is accumulated in large edible fish. Its imbalance can lead to neurological disorders and can cause Minamata disease. Procedure to detect Hg2+ 1. MS1 (Mercury Sensor 1)‚ a water soluble‚ fluorescein
Premium Mercury Spectroscopy Metal
Spectroscopy of Food Dyes Foods and drinks are identified by two major concepts: shape and color. When individuals want to buy fruit‚ shape and color help determine ripeness and the quantity. These qualities help people spend money efficiently by buying the best fruit‚ or any food for that matter. All foods have preconceived looks‚ and if a food were to not be the same color or a different shape‚ an abnormality is noticed. The Lab Manual provides information that there are nine different FDA approved
Premium Color Food coloring Dye
The pigments called chlorophylls in the plants are what trap the light energy. Carotenoids also help aid the chlorophylls by also absorbing light. The two chlorophylls found in green plants are chlorophyll a and chlorophyll b. The purpose of this lab is to extract the pigments from spinach leaves and separate them by using chromatography to determine each of the pigments absorption spectra. Methods and Materials For this experiment I used a 10mL pipette‚ a 100mL graduated cylinder‚ a rubber
Premium Chlorophyll Photosynthesis Plant
Experiment # 9: Optical Method of Analysis Use of Beer’s Law on a KMn04 Gregorio‚ Justin Edrik A. March 2013 Department of Chemical Engineering‚ Faculty of Engineering University of Santo Tomas España‚ Manila Abstract The purpose of this analytical laboratory experiment is to determine the unknown concentration of potassium permanganate (KMnO4) solution by finding its absorbance through the use of spectrophotometer. The preparation of four known concentration of KMnO4 was done namely‚ 2
Premium Spectroscopy Chemistry Light
Australian physicist Alan walah Atomic spectrometric methods are rapid ‚convenient and have high selectivity The method involves a process called as atomization in which the sample is converted to a gaseous phase atoms or ions Atomic absorption spectroscopy is based on the same principle as the flame test used in qualitative analysis. When an alkali metal salt or a calcium‚ strontium or barium salt is heated strongly in the Bunsen flame‚ a characteristic flame colour is observed: Na -- yellow Li--
Premium Atom Photon Quantum mechanics
The Visible Spectra Of Orange Soda Pop Objective : To measure an absorbance value of the different colour solutions by using Spectrophotometry Introduction Spectrophotometry involves the use of a spectrophotometer. A spectrophotometer is a photometer (a device for measuring light intensity) that can measure intensity as a function of the color‚ or more specifically‚ the wavelength of light (nm). The instrument also can be use on biological sample such as chlorophyll pigments and
Premium Light Absorbance Spectroscopy
Spectrophotometry was used in the lab to determine whether non-magnetized zeolite‚ magnetized zeolite‚ or charcoal was the more effective sequestration agent for Procion Red Dye. A calibration curve was created with the known concentrations and the absorbances of the Procion Red Dye dilutions at λmax. The slope of the calibration curve was used to determine the concentration of the analytes. As a result‚ charcoal was shown to be the more effective sequestration agent. Introduction PAHs‚ polycyclic
Premium Polycyclic aromatic hydrocarbon Concentration Solution
Observing Flames and Specs through a Spectroscope By: Seif Alkhouri Cristian Plancia-Mata Charlotte Maxwell Suryansh Kumar Evan Hatton J. Immel Ph.D Introduction Spectroscopy is the study of the interaction between matter and radiated energy. English philosopher Roger Bacon(1214-1294) was the first person to recognize that if sunlight passes through water it splits into colors. Around four centuries ago‚ Isaac Newton originated the title “spectrum” to label the shade of rainbows put
Premium Electrolysis Light Sodium
RESULTS AND DISCUSSION: Ultraviolet spectroscopy of Verapamil hydrochloride at λmax of 278 nm in pH 1.2 buffer was found to be linear in range of 20 – 80 µg/ ml. The method was validated and found to be precise‚ specific and accurate. The tablets of Verapamil hydrochloride were prepared by press coating technique showing sustained release for 24 h for once daily dosing with a lag phase of 4 - 6 h. The optimum ratios and type of polymers and other excipients were chosen to produce gastroretentive
Premium Chemistry Acetic acid Alcohol
Absorbance of Light vs. Concentration of Colored Solution Introduction: Performing this lab showed the importance of light in virtual drug screening because light can be used in a variety of ways to obtain different kinds of information in research. Light can be used to determine the concentration of DNA or protein in solution‚ tag different objects such as cells‚ protein structures‚ or bacteria in order to determine whether there is a large amount of a certain substance‚ and to determine the size
Premium Concentration Chemistry Light