Atomic absorption spectroscopy

light, gaps in the spectrum could be observed. These lines Fraunhofer discovered would later be determined to be caused by absorption of light by electrons when moving between atomic orbitals and passing through atoms. Since all of this has occurred, it has led to the core of astronomical spectroscopy. This is known to be the study of astronomy using techniques of spectroscopy to measure the spectrum of electromagnetic radiation. Because of this, astronomers are now allowed to make observations about

Whether we realize it or not, water is surrounding us in different forms everywhere. Water actually makes up about 70% of Earth. Water is overall known as a good solvent that dissolves minerals it comes in contact with. As water moves through earth, it dissolves minerals and holds them in solution. The amount of metal cations, such as Calcium (Ca^2+) and Magnesium (Mg^2+) in water became known as water “hardness”. Water hardness can be detected by white residue and crystal like rocks when heated

Tap water contains a wide variety of organic and inorganic materials, most of which are innocuous. However, some trace constituents in water, including heavy metals such as copper, zinc, cadmium and lead, are more problematic. Water leaving a drinking water purification plant will ordinarily contain negligible levels of lead and other harmful metals. These metals enter the water during distribution, through the corrosion of service pipes and plumbing in a process called leaching. Metals such as

Water is one of the most important resources that earth can offer. Indeed, water is essential to the survival of all living things. Pure water must be colorless, tasteless and odorless. However, sometimes, natural water can contain impurities. Indeed, dissolved solute coming minerals in rocks and soils are often present in natural water. The cations Mg2+and Ca2+ are the most common dissolved compounds found in natural water. The presence of the dissolved Cations Ca2+ and Mg2+ (and other polyvalent

Enrollment no: A4450014069 Name: RAVINA KUNDU TOPIC: APPLICATIONS OF RAMAN SPECTROSCOPY An introduction to Raman Spectroscopy (basic theory) EXCITING (RAYLEIGH) LINE ANTI-STOKES LINE

Introduction: Water hardness is the presence of dissolved divalent calcium and magnesium cations in a liquid solution such as water. Hard water has more cations, soft water has less cations. Calcium and magnesium is present in many different water supplies because these minerals are in rocks and soils. The Calcium comes from sedimentary rocks such as limestone and dolomite, while Magnesium comes from rocks like olivine and pyroxenes -------earth materials book. Hardness has an affect on the way

Table of Contents Part A: 3 Introduction: 3 Gas Chromatography (GC) 3 Gas- solid chromatography 3 Gas-liquid chromatography 3 Advantages: 3 Disadvantages: 3 High performance liquid Chromatography (HPLC) 4 Advantages: 4 Disadvantages: 4 Part B: 5 Introduction 5 References 6 Part A: Introduction: Forensic Chemistry involves a variety of different techniques in which have the ability to analyse samples found on crime scene, one set of techniques is that of chromatography. Chromatography

Are Quantized 6 Atomic Excitation and De-excitation 7 Ionization

1. Statement of Topic The case of Joann Curley was eventually solved with the use of examination of hair, which evidently reveals that hair and its growth is an extremely useful forensic tool which can help investigators solve a crime. However, by the time investigators were able to arrest Joann Curley, she was able to collect the life insurance money and use it as she pleased for six years. The fact that Joann was able to carry out this murder and not get caught for six years makes this case interesting

The full procedure for each of these sections can be found in the PSU Chemtrek.5 In Section A, Atomic Absorption Spectroscopy was used to determine water hardness. I filled two pipets with my water sample to perform the Ca2+ analysis and the Mg2+ analysis separately. The absorbance values for both elements are then calculated using the process described in the introduction.5 Some water samples needed to be diluted due to their high concentration of ions but this was not the case for my sample.