Classification of Analytical Methods - Pace University
Classification of Analytical Methods By Naaimat Muhammed Goals of Analytical Chemistry
What is it? Identification Qualitative Analysis How much? Quantitative Analysis
Analytical Chemistry deals with methods for determining the chemical composition of samples of matter . A qualitative method yields information about the identity of atomic or molecular species or the functional groups in the sample; a quantitative method, in contrast, provides numerical
information as to the relative amount of one or more of these components. Present day Instrumental Analysis Better and Faster
More Data (Images) Miniaturization Better data processing methods - Chemo metrics Classical Methods Separation of analytes by precipitation, extraction, or distillation.
Qualitative analysis by reaction of analytes with reagents that yielded products that could be recognized by their colors, boiling or melting points, solubilities, optical activities, or refractive indexes. Quantitative analysis by gravimetric or
by titrimetric techniques. Gravimetric Methods the mass of the analyte or some compound produced from the analyte was determined.
Titrimetric Methods the volume or mass of a standard reagent required to react completely with the analyte was measured. Instrumental Methods Measurements of physical properties of analytes, such as conductivity, electrode potential, light absorption, or emission, mass to charge ratio, and fluorescence, began to be used for quantitative analysis of a variety of inorganic, organic, and
biochemical analyte. Instrumentation is divided into two Category Detection
Quantitation Analytical Signals
Data Domain information encoded Non-electrical Domains (scale, number, chemical) Electrical Domains (volts, current, charge) Analog Domains continuous quantities (volts, current) Time Domains (pulses, slopes) Digital Domains (Off/On or Hi/Lo)
Useful Websites Dealing With Instrumental Analysis American Chemical Society: http://www.acs.org Chemical Abstracts Service: http://www.cas.org
Chemical Center Home Page: (maintained by ACS) http://www.chemcenter/org Science Magazine: http://www.sciencemag.org Journal of Chemistry and Spectroscopy: http://www.kerouac.pharm.uky.edu/asrg/wave/wavehp.html
Bohr Diagrams. Bohr Diagrams show each of the energy levels of the atom. Show every electron that the atom has orbiting around it. These electrons are organized into the different shells or orbital levels. ... Electron Configuration and Orbital Diagram.
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Despite help form the EEA a big effort. Only a marginal part of the INSPIRE data model is used. Good example? E-PRTR, LCP, IED - only the administrative part of the facilities. To low ambition level. INSPIRE and EU-reporting |...
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Previously, we covered Pythium Blight, a foliar disease caused by Pythium aphanidermatum and P. ultimum. In this section, we will review Pythium Root Rot/Pythium Dysfunction which is caused by several other species of Pythium. The disease names Pythium Root Rot...
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