FLAME TEST

test used in the identification of certain metals. It is based on the observation that light emitted by any element gives a unique spectrum when passed through a spectroscope. When a salt of the metal is introduced into a Bunsen burner flame, the metallic ion produces characteristic color in the flame. Some metals and the colors they produce are: barium, yellow-green; calcium, red-orange; copper salts (except halides), emerald green; copper halides or other copper salts moistened with hydrochloric acid, blue-green; lithium, crimson; potassium, violet; sodium, yellow; and strontium, scarlet. The value of this simple flame test is limited by interferences (e.g., the barium flame masks calcium, lithium, or strontium) and by ambiguities (e.g., rubidium and cesium produce the same color as potassium). A colored glass is sometimes used to filter out light from one metal; for instance, blue cobalt glass filters out the yellow of sodium.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Flame Test
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books on: Flame Test  - 925 results

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1.
The Flame of Freedom: The German Struggle against Hitler
Book by Eberhard Zeller, R. P. Heller, D. R. Masters; Westview Press, 1994
Subjects: Anti-Nazi Movement--Germany, Germany--Heer--Officers, Germany--Heer--Political Activity, Germany--Politics And Government--1933-1945, Hitler, Adolf--1889-1945--Assassination Attempt, 1944 (July 20)
...bitterness and understandable hatred, extinguishing the holy flame of real human freedom which you ought to preserve for future...to Lapland with his young workers from Jena demanded such a test. At this time Reichwein wrote to his non-political friends...
2.
The Mysterious Flame: Conscious Minds in a Material World
Book by Colin McGinn; Basic Books, 1999
Subjects: Consciousness
...follows that a machine could pass the Turing test and have no mind, because it could simulate...human reasoning, then they could pass the Turing test. But this shows that passing the Turing test is no proof of mentality. So it is not merely...
3.
A World in Flames: A Short History of the Second World War in Europe and Asia, 1939-1945
Book by Martin Kitchen; Longman, 1990
Subjects: World War, 1939-1945--Asia, World War, 1939-1945--Europe
...arrived at Potsdam on 15 July and on the following day he was informed that the Alamogordo test was successful. On 21 July he was given full details of the test. On 24 July the President casually mentioned to Stalin that the United States had a new...
4.
Keeping the Flame: Media and Government in Latin America
Book by Robert N. Pierce, John Spicer Nichols; Hastings House, 1979
Subjects: Mass Media Policy--Latin America
...Typically, censorship of each publication continued two or three years, after which its editors usually stopped trying to test the censors patience. In the case of the dailies and some weeklies, a censor came to the office to read the page proofs just...
5.
The Mutual Flame: On Shakespeare's Sonnets and the Phoenix and the Turtle
Book by G. Wilson Knight; Methuen, 1955
Subjects: Drama, Shakespeare, William--1564-1616--Phoenix and the turtle, Shakespeare, William--1564-1616--Sonnets
...but rather his higher self. He is 'all the better part of me' 39 , 'my spirit is thine, the better part of me' 74 . The test was severe. At first the boy's 'inward worth' was coupled with his 'outward fair' 16 . But his chaste reserve, or what...
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journal articles on: Flame Test  - 864 results

       More journal Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Lighting the Flame: The Turbojet Revolution Comes to America
Journal article by Scott A. Willey; Air Power History, Vol. 51, 2004
Subjects: Books--Book reviews, Lighting the Flame: The Turbojet Revolution Comes to America. (Book)--Book reviews
Lighting the Flame: The Turbojet Revolution Comes...Calif.: Air Force Flight Test Center History Office, 2002...vantage point at the Flight Test Center, set down not only the...a security cover) into the test cell only five and a half months...complete system had undergone taxi tests and was ready for its historic...
2.
Diastereomers of the Brominated Flame Retardant 1,2-Dibromo-4-(1,2 Dibromoethyl)cyclohexane Induce Androgen Receptor Activation in the HepG2 Hepatocellular Carcinoma Cell Line and the LNCaP Prostate Cancer Cell Line
Journal article by Hazem Khalaf, Anders Larsson, Hakan Berg, Robert Mccrindle, Gilles Arsenault, Per-Erik Olsson; Environmental Health Perspectives, Vol. 117, 2009
Subjects: Fireproofing agents--Health aspects, Fireproofing agents--Research, Flame retardants--Health aspects, Flame retardants--Research, Hepatocellular carcinoma--Research, Hepatocellular carcinoma--Risk factors, Hepatoma--Research, Hepatoma--Risk factors, Hormone receptors--Health aspects, Hormone receptors--Research, Prostate cancer--Research, Prostate cancer--Risk factors
...recently did our group identify the brominated flame retardant (BFR) 1,2-dibromo-4...beta forms arc found in the commercial flame retardant Saytex BCL 462 (Albemarle Corp...determined using two-tailed Students t-test. Results Ligand docking. We determined...
3.
Flame Retardants in Placenta and Breast Milk and Cryptorchidism in Newborn Boys
Journal article by Katharina Maria Main, Hannu Kiviranta, Helena Eeva Virtanen, Erno Sundqvist, Jouni Tapio Tuomisto, Jouko Tuomisto, Terttu Vartiainen, Niels Erik Skakkebaek, Jorma Toppari; Environmental Health Perspectives, Vol. 115, 2007
Subjects: Cryptorchism--Research, Fireproofing agents--Health aspects, Flame retardants--Health aspects, Infants (Newborn)--Diseases, Infants (Newborn)--Research, Neonatal diseases--Research, Undescended testes--Research
Flame Retardants in Placenta and Breast...PBDEs) are widely used as flame retardants, and the general...analysed by Mann- Whitney U-test. Eighty-six boys participated...control for any time trends in flame-retardant concentration in...
4.
Warm Reception? Halogenated BPA Flame Retardants and PPAR[gamma] Activation
Journal article by Julia R. Barrett; Environmental Health Perspectives, Vol. 119, 2011
Subjects: Bisphenol-A--Physiological aspects, Cell receptors--Properties, Fireproofing agents--Physiological aspects, Flame retardants--Physiological aspects, Halogen compounds--Physiological aspects
...Reception? Halogenated BPA Flame Retardants and PPARgamma Activation...BPA derivatives are used as flame retardants, with tetrabromobisphenol...obesity. Cell lines were used to test the ability of BPA, TBBPA...halogenated derivatives of BPA used as flame retardants, which have not...
5.
Prenatal Exposure to Organohalogens, Including Brominated Flame Retardants, Influences Motor, Cognitive, and Behavioral Performance at School Age
Journal article by Elise Roze, Lisethe Meijer, Attie Bakker, Koenraad N.J.A. Van Braeckel, Pieter J.J. Sauer, Arend F. Bos; Environmental Health Perspectives, Vol. 117, 2009
Subjects: Child behavior--Health aspects, Child behavior--Research, Children--Behavior, Children--Health aspects, Children--Research, Halocarbons--Environmental aspects, Halocarbons--Health aspects, Halocarbons--Research, Pregnant women--Health aspects, Prenatal drug exposure--Environmental aspects, Prenatal drug exposure--Health aspects, Prenatal drug exposure--Research
...calculations. Where appropriate, the test scores were inversely transformed so that for all tests higher scores indicated better...used the Mann-Whitney U-test to relate the neurologic outcome...Hadders-Algra M. 2008. Test-retest, inter-assessor...Polybrominated diphenyl ether (PBDE) flame retardants. Sci Total Environ...
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magazine articles on: Flame Test  - 562 results

       More magazine Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Streak of Flame: the Remarkable Secret Weapon of Dago 3
Magazine article by Charles Syndor; Sea Classics, Vol. 32, November 1999
...around. Then came the time of the first test when we fired down between Taragoona...it appeared that a solid streak of flame was soaring upward to meet the plane...top, and shortly afterwards we saw flames to the southwest. They had creamed...
2.
Burned by Flame Retardants
Magazine article by Terry J. Allen; In These Times, Vol. 31, October 2007
Subjects: Descriptive labeling, Environmental Protection Agency--EPA, Hazardous substances, Health hazards, Human exposure, Public health, Toxicology, United States
Burned by Flame Retardants by Terry J. Allen...danger is piling up. While test animals exposed to high levels...when PBDEs first proliferated. Tests on household cats found that PBDE flame retardant had "a clear association...Europe, which uses alternative flame retardants, begs to disagree...
3.
Will 'Ace' McCain Flame out Again?
Magazine article by Kelly Patricia O'Meara; Insight on the News, Vol. 16, March 20, 2000
Subjects: McCain, John--Political activity, Presidential candidates--Political activity
Will Ace McCain Flame Out Again by Kelly Patricia OMeara Over the years hes played many roles...The engine was removed from the aircraft that afternoon, mounted on a test stand and a new propeller installed. It was flushed with fresh water...
4.
Shot Down in Flames
Magazine article by Iain Stasukevich; American Cinematographer, Vol. 92, July 2011
Shot Down in Flames by Iain Stasukevich Bellflower, the feature...worked," explains Glodell. "My first test version was hacked out of some camera from...kept begging Silicon Imaging to let me test the camera," recalls Glodell. "Finally...
5.
Down in Flames
Magazine article by Victoria Moore; New Statesman, Vol. 129, March 5, 1999
Subjects: Alcoholic beverages--Flavor and odor, Cocktails--Composition
Down in flames by Victoria Moore I might not be a wily...polite barman lights the drink and, as it flames blue on burnt caramel, tells me to plunge...stretching towards the end of this endurance test - the bottom of the glass. And when I reach...
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newspaper articles on: Flame Test  - 822 results

       More newspaper Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Watchdog 'Missed Jet Flame Test Warning'
Newspaper article; The Birmingham Post (England), November 9, 1998
Watchdog Missed Jet Flame Test Warning. The Federal Aviation...warning 10 years ago that a test used to determine the flammability...thousands of airliners after tests showed many current types would fail a new fire test. Airlines and aircraft makers...
2.
Firm Fined for Sofas That Failed Flame Test; Dangerous Couches Went Up in Smoke
Newspaper article; Evening Chronicle (Newcastle, England), September 9, 2008
...Fined for Sofas That Failed Flame Test; Dangerous Couches Went Up...TAYLOR DANGER sofas shot up in flames when tested by watchdogs. Trading...couches subjected to a match test went up in smoke. John Forrester...material had been treated to be flame resistant but this treatment...
3.
Runner Picked to Light Olympic Flame Faces the Axe after Missing Drug Test
Newspaper article; The Daily Mail (London, England), August 13, 2004
...Runner Picked to Light Olympic Flame Faces the Axe after Missing Drug Test. Byline: DAVID WILLIAMS THE...athlete due to light the Olympic flame failed to attend a drugs test. Champion 200m sprinter Costas...form the five Olympic rings in flames. The Games are thought to be...
4.
United Keep the Flame Alight; Ferguson Has the Last Laugh in Test of Nerve
Newspaper article; The Daily Mail (London, England), December 5, 1996
United Keep the Flame Alight; Ferguson Has the Last Laugh in Test of Nerve. Byline: NEIL HARMAN THE banks of the Happel Stadium were illuminated by red torches which lit Manchester Uniteds way...
5.
GREEK BECKS IN OLYMPIC DRUG TEST SCANDAL; Star Was to Light Flame
Newspaper article; Daily Record (Glasgow, Scotland), August 13, 2004
Subjects: International Olympic Committee
GREEK BECKS IN OLYMPIC DRUG TEST SCANDAL; Star Was to Light Flame. Byline: By Pat Hurst THE athlete due to light the Olympic flame tonight is at the centre of a...to turn up for a random drugs test last night. The Olympic 200metres...
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encyclopedia articles on: Flame Test  - 7 results

       More encyclopedia Results: 1-7 >>  
 
1.
Flame Test
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
FLAME TEST test used in the identification of certain metals...salt of the metal is introduced into a Bunsen burner flame, the metallic ion produces characteristic color in the flame. Some metals and the colors they produce are: barium...
2.
Flame
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...reduction zone or reducing flame, since there the supply of...oxidizing, zone. The candle flame is extremely complex. Several...and water being formed). Flames are colored by the introduction...substances, a fact utilized in the flame test for the identification of certain...
3.
Bead Test
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
BEAD TEST test used in the identification...that cannot be identified by a flame test are identified by a bead...to confirm the results of a flame test. The borax bead test is...powdered borax, then heated in the flame of a Bunsen burner until the...
4.
Barium
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...without being absorbed by the body and poisoning the subject. Barium salts give a characteristic green color in the flame test . Barium metal was first isolated in 1808 by Sir Humphry Davy by electrolysis...
5.
Ordeal
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...legal custom whereby an accused person was required to perform a test, the outcome of which decided the persons guilt or innocence...ordeal by fire walking through fire or putting the hand into a flame was common, and there were other fiery ordeals, such as walking...
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