CHAPTER_11_ANALYTICAL_CHEMISTRY[1] - Chapter 11 Analytical...

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Analytical Chemistry Chapter 11 1
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OUTLINE S 11.1 Introduction to Analytical Chemistry, Qualitative & Quantitative analysis 11.2 Method and Equipment 2
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Introduction of Analytical Chemistry 3 Analytical Chemistry deals with methods for determining the chemical composition of samples. Qualitative Analysis (identification) provides information about the identity of species or functional groups in the sample (an analyte can be identified). Example: Identify Ca in milk. Quantitative Analysis provides numerical information of analyte (quantitate the exact amount or concentration). Example: Measure the concentration (mg/L) of Ca in milk.
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pH meters technique Single wavelength spectrophotometers technique Electrochemical technique Titrations, gravimetric analysis, and other - Data was primarily one dimensional Experiment Number HISTORY OF ANALYTICAL CHEMISTRY - 1950's 4
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Gas Chromatography Atomic Absorption spectrophotometry , and others - Analysis of ppm and ppb levels of metals and organics in the environment begins. - Thus data representations were now two dimensional.
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