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Topic: Flame emission spectroscopy

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	Spectroscopy - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-14)
		Spectroscopy is the study of spectra, that is, the dependence of physical quantities on frequency.
		Spectroscopy is often used in physical and analytical chemistry for the identification of substances, through the spectrum emitted or absorbed.
		The nebulizer and flame are used to desolvate and atomize the sample, but the excitation of the analyte atoms is done by the use of lamps shining through the flame at various wavelengths for each type of analyte.
	www.bexley.us /project/wikipedia/index.php/Spectroscopy (1521 words)

	Electromagnetic spectroscopy - Wikipedia, the free encyclopedia
		Emission spectroscopy is the study of electromagnetic radiation spectra given off by atoms or molecules that undergo a transition to a lower energy level.
		Absorption spectroscopy is the study of electromagnetic radiation spectra absorbed by atoms or molecules that change energy levels.
		Mossbauer spectroscopy - Measures the absorption of gamma rays by atoms bound in a solid as a function of gamma-ray energy.
	en.wikipedia.org /wiki/Electromagnetic_spectroscopy (872 words)

	Flame emission spectroscopy - Wikipedia, the free encyclopedia
		Flame emission spectroscopy (FES) is a form of emission spectroscopy in which energy is provided to a sample through use of a flame.
		The solvent evaporates first, leaving finely divided solid particles which move to hottest region of the flame where gaseous atoms and ions are produced.
		On a simple level, flame emission spectroscopy can be observed using just a Bunsen burner and samples of metals.
	en.wikipedia.org /wiki/Flame_emission_spectroscopy (268 words)

	Flame Tests
		The spectra are calculated to represent the emission from a flame and are based on the work of John Talbot.
		The copper flame color is dependent on the presence of halide (I, F, Br, or Cl).
		The outer darts of the flame are tinged with emerald-green.
	webmineral.com /help/FlameTest.shtml (414 words)

	Atomic Absorption Spectroscopy: Instrument and Experiment Design (Site not responding. Last check: 2007-10-14)
		Atomic emission though requires hotter flame temperatures since in emission spectroscopy the objective is to form as many excited atoms as possible since the quantitative measurement of analyte is based on the intensity of the emission line produced by the de-excitation process.
		The objective in absorption spectroscopy is to avoid excited atoms since the emission lines may interfere with the detector; the more atoms in the excited state mean the fewer atoms in the ground state, which is where, for absorption spectroscopy, the analyte atom is meant to be found.
		For emission spectroscopy quantification depends on the intensity of emission lines from the flame whereas for absorption spectroscopy quantification depends on light absorbed by analyte in the flame.
	www3.azwestern.edu /chem/nasa/aasdesign.htm (1948 words)

	SPECTROSCOPY FACTS AND INFORMATION (Site not responding. Last check: 2007-10-14)
		Fluorescence spectroscopy uses higher energy photons to excite a sample, which will then emit lower energy photons.
		Spectroscopy of matter in situations where the properties are changing with time is called Time-resolved_spectroscopy.
		Spectroscopy using an AFM-based analytical technique is called Force_spectroscopy.
	www.flowergods.com /spectroscopy (1438 words)

	JCE 2000 (77) 577 [May] Atomic Emission Spectroscopy--It Lasts and Lasts and Lasts
		Atomic emission spectroscopy, probably the first of the spectrometric methods to be used for elemental analysis, is still among the most popular.
		Flame emission spectroscopy is the technique of choice for determining alkali metals in many clinical samples, and the high-voltage spark is the mainstay for quantitation in the metals industry.
		Direct-current arc spectroscopy is routinely utilized for the characterization of recycled alloys, the inductively coupled plasma is used in laboratories throughout the world for solution samples, and the microwave plasma finds use as a chromatographic detector.
	jchemed.chem.wisc.edu /Journal/Issues/2000/May/abs577.html (338 words)

	Flame Photometry
		Flame photometry, more properly called flame atomic emission spectrometry, is a fast, simple, and sensitive analytical method for the determination of trace metal ions in solution.
		Non-metals generally do not produce isolated neutral atoms in a flame, thus they are not suitable for determination by flame emission spectroscopy.
		Light from the flame is focused onto the end of a fiber optic cable (a "light pipe") which transmits the light onto a photodiode in the small electronics box by the flame photometer.
	www.chem.uky.edu /courses/che226/labs/flame_photometry.html (723 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		Emission spectroscopy: The measurement of spectra that is emitted from a substance or element that is being excited.
		Flame emission spectroscopy: A form of emission spectroscopy that uses a flame as the source of the excitation energy.
		Emission spectroscopy consists of measuring the intensity of light given off by electrons as they jump from an excited state to their neutral state.
	www.cs.iastate.edu /~cosmok69/Docs/Final_Design_Report.doc (11340 words)

	Articles - Spectroscopy (Site not responding. Last check: 2007-10-14)
		The intensity of emitted electromagnetic radiation and the amount of absorbed electromagnetic radiation are studied by electromagnetic spectroscopy (see also cross section).
		The amplitude of macroscopic vibrations is studied by acoustic spectroscopy and dynamic mechanical spectroscopy.
		Emission spectroscopy uses the range of electromagnetic spectra in which a substance radiates.
	www.outship.com /articles/Spectroscopy (1420 words)

	CHP - Atomic Emission Spectroscopy (Site not responding. Last check: 2007-10-14)
		Atomic emission spectroscopy (AES or OES [optical emission spectroscopy]) uses quantitative measurement of the optical emission from excited atoms to determine analyte concentration.
		As in AA spectroscopy, the sample must be converted to free atoms, usually in a high-temperature excitation source.
		Since the atomic emission lines are very narrow, a high-resolution polychromator is needed to selectively monitor each emission line.
	www.chem.vt.edu /chem-ed/spec/atomic/aes.html (279 words)

	Undergraduate Information \| School of Chemistry
		Spectroscopy is the experimental tool we use to probe how molecular structure and energy change when molecules are exposed to light.
		In this course we use quantum mechanics and spectroscopy to develop an understanding of molecular structure, the strength and type of bonds that hold molecule together and why molecules absorb specific wavelengths of light.
		Topics covered include infrared and Raman spectroscopies, nuclear magnetic resonance spectroscopy, spectrophotometry, atomic absorption and emission spectroscopies, mass spectrometry, and the use of ion-selective electrodes.
	www.chem.usyd.edu.au /future/units.html (2052 words)

	Sherwood Scientific Ltd
		The Sherwood Model 410 Flame photometer directly measures Alkali and Alkaline Earth metals Sodium (Na), Potassium (K), Lithium (Li), Calcium (Ca), Barium (Ba), Caesium (Cs), Rubidium (Rb) and Strontium (Sr) by means of a low temperature flame using propane, butane or Natural gas.
		The principles of flame emission spectroscopy were first investigated by Kirchoff and Bunsen (1860s).
		Flame Photometry its the technique of choice for the measurement of Na, K and Ca in all sample types in:
	www.sherwood-scientific.com /flame/sh410.html (396 words)

	Emission Spectroscopy: Element identification
		Different elements emit different emission spectra when they are excited because each type of element has a unique energy shell or energy level system.
		The metal ions are converted to atoms in the flame and then excited by the heat from the Bunsen burner flame.
		Record the color observed for the unknown and use the color match to identify the metal atom that is the produced from the cation in the unknown.
	www.800mainstreet.com /spect/emission-flame-exp.html (2115 words)

	Emission spectroscopy experiment chemistry Information (Site not responding. Last check: 2007-10-14)
		Emission Spectroscopy Experiment Chemistry are great for when you're looking to get better at emission spectroscopy experiment chemistry for selfish purposes.
		If you need help locating emission spectroscopy experiment chemistry then you've come to the right place because we have all the emission spectroscopy experiment chemistry you could want.
		Studies of the 193-nm photolysis of diethyl ketone and acetone using time-resolved Fourier transform emission spectroscopy...
	chemistry.1infochest.info /chemistry-lewis-dot-structures/emission-spectroscopy-experiment-chemistry.html (276 words)

	[No title]
		This is forbidden, and hence resulting in a slow emission.
		The presence of many electrons in the flame reduces chromate into chromium atoms (only ground atoms are produced, not excited ones).
		Flame Emission: detects excited atoms but complete excitation cannot be achieved.
	www-users.york.ac.uk /~srms500/siti.org.uk/generated/notes_spectroscopy.doc.htm (1011 words)

	M&IE - Nick G. Glumac (Site not responding. Last check: 2007-10-14)
		Nanopowder Synthesis in Flames: Low pressure flames provide an ideal growth environment for non-agglomerated oxide nanopowders, as was first demonstrated in our lab.
		Flame Emission Spectroscopy: New solid-state devices have made emission spectroscopy an affordable alternative for in-situ process monitoring of industrial furnaces.
		While much work has been done on flame emission, few investigations have involved systematic parameter studies from which closed-loop process control algorithms could be developed.
	www.mie.uiuc.edu /content/asp/people/faculty/current/nick_g_glumac.asp (569 words)

	Chem301 Tutorial: Internal Standards (Site not responding. Last check: 2007-10-14)
		Internal standards are often used in chromatography, mass spectroscopy and atomic emission spectroscopy.
		In the analysis of sodium metals by flame atomic emission spectroscopy, lithium may be used as an internal standard.
		Compare the precision of the result from the internal standard method with that achieved with the calibration curve method (ie, if the lithium emission signals were ignored).
	www.richmond.edu /~cstevens/301/IS_General.html (358 words)

	Applied Spectroscopy May 1998 Titles and Abstracts
		Several factors influence the precisionof laser-induced breakdown spectroscopy (LIBS) measurements.This paper reports on the effect of emission signaltemporal development, sample translational velocity,number of spectra accumulated, laser pulse stability,detector gate delay, surface roughness, and the useof background correction, on LIBS precision.
		The dependence of UV/visible emission characteristicsin hydrocarbon flames as a function of flame equivalenceratio and total flow rate is examined for low pressureacetylene/oxygen flames used for materials synthesisand for atmospheric pressure methane/air flames typicallyseen in industrial boilers and heaters.
		The size,the refractive index, and the wavelength dependenceof the refractive index of the optically levitatedmicroparticle are determined from the position of themorphology-dependent resonances observed in Raman spectra,in elastic light scattering, and in radiation pressuremeasurements.
	www.s-a-s.org /journal/98/may98_ea2.htm (2992 words)

	KFUPM Short Courses 2003-2004
		Basic concepts, instrumentation, analytical methodology and analytical applications of atomic absorption, flame emission and plasma emission techniques will be discussed.
		Basic principles of atomic absorption and atomic emission spectroscopy 3.
		Instrumentation of conventional atomic absorption and atomic emission techniques: Flame and electrothermal atomization 4.
	www.kfupm.edu.sa /edu/ShortCourses/67.html (172 words)

	Thomson Nelson - Secondary Science - Chemistry 12 College Preparation
		(h) Flame emission spectroscopy is a technique that is used to identify the components of different types of matter.
		Using electronic and print resources, compile a list of situations in which flame emission spectroscopy is used.
		This page explains the chemistry behind flame emission spectroscopy and also includes an experiment for analyzing samples for small amounts of potassium using flame emission spectroscopy.
	www.nelson.com /nelson/school/secondary/science/0176265333/studworkweblinks_01.html (684 words)

	Articles - Spectroscopy (Site not responding. Last check: 2007-10-14)
		A graphite furnace for heating the sample to desolvate and atomize is commonly used for greater sensitivity.
		- in some ways similar to flame atomic emission spectroscopy, it has largely replaced it.
		NMR spectroscopy analyzes certain atomic nuclei to determine different local environments of hydrogen, carbon, or other atoms in the molecule of an organic compound or other compound.
	www.lastring.com /articles/Spectroscopy (1492 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		Experiment E: Flame Atomic Emission Spectroscopy To date, graphite furnace atomic absorption techniques remain in widespread use in analytical laboratories, especially when solid and or extremely small quantities of sample are available.
		Atomic spectroscopy techniques provide rapid and reliable ways in which solution concentrations of cations can be determined, and as such, tens of thousands of elemental analyses are conducted worldwide each day.
		With the introduction of flame atomic absorption and emission spectrometry in the 1960's, titration determinations of metal ions in solution was replaced with the new technique that was faster and provided lower detection limits (parts per million (ppm)).
	www.sfu.ca /chemistry/faculty/Li/chem215/Labmanual.doc (9620 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		In order to determine the level of metal contamination associated with different CO packages, several cylinders were sampled by a hydrolysis sampling method and the metals analyzed for by flame emission spectroscopy, ICP-OES, GFAA and ICP-MS.
		Although it has not been demonstrated that this sampling method is quantitative for carbonyl sampling, by assuming that the amount of metals captured is proportional to their concentration, the method is useful for comparison purposes.
		Analysis was performed by flame emission spectroscopy for the analysis of potassium and sodium, ICP-OES for calcium, GFAA for iron and ICP-MS for all other analyzed elements.
	www.reed-electronics.com /SEMICONDUCTOR/index.asp?layout=articlePrint&articleID=CA163939 (1303 words)

	Leatherhead Food International - information, analysis, testing, research (Site not responding. Last check: 2007-10-14)
		Utilising state of the art technology Leatherhead are able to offer a fast and efficient screening services for a comprehensive range of minerals and heavy metals by ICP (Inductively coupled plasma) technology.
		Plasma technology has several benefits over sources used in flame emission spectroscopy, the main advantage being that they are highly energetic atomization sources.
		They also offer the ability to obtain good spectra for most elements and allow the spectra for several elements to be recorded simultaneously or in a rapid sequential fashion.
	www.lfra.co.uk /lfi/submenu.asp?item=2855&subsection=67 (132 words)

	syllabus
		Techniques include absorption spectroscopy, nuclear magnetic resonance, atomic absorption, flame emission, mass spectroscopy, chromatography, potentiometry, and polarograpy.
		This course consists of 2 lecture hours and one six (6) hour lab period for 4 hours of college credit and is offered each spring semester.
		Theory and instrumentation of atomic absorption and atomic fluorescence spectroscopy.
	www.tarleton.edu /~lschultz/4084syllabus.htm (539 words)

	Untitled Document (Site not responding. Last check: 2007-10-14)
		Different methods for measuring electrolytes including flame emission photometry, atomic absorption spectroscopy, and ion-selective electrodes.
		Principle: Metal ions are reduced to metal atoms by the flame.
		In AAS the flame is not as hot as in FESThe following statement is required by the University of Minnesota:
	www.courses.ahc.umn.edu /medical-school/MedT/5320/electro1.html (339 words)

	Flame Emission Spectroscopy
		Were you to use a spectroscope to look at the emission spectrum of sodium, you would see the bright yellow emission lines.
		As many flames are hot enough to melt some of the types of wire (hint: an undesirable trait), one should not roast the wire in the flame indefinitely.
		Hold the loop high over the flame to allow the water to evaporate rapidly without boiling and "spattering." Once dry, move the loop into the flame.
	www.science-projects.com /fes/FlameEmissions.htm (1533 words)

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