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cyanide
cyanide
cyanide Salt or ester of hydrocyanic acid (prussic acid, HCN). The most important cyanides are sodium cyanide
(NaCN) and potassium cyanide
(KCN), both of which are deadly poisonous. Cyanides have many industrial uses – in electroplating, for the heat treatment of metals, in the extraction of silver and gold, in photography, and in insecticides and pigments.
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Cyanide Generation During Preservation of Chlorinated Wastewater Effluent Samples for Total Cyanide Analysis
Magazine article from: Water Environment Research; 1/1/2008; ; 700+ words
; ...used to preserve wastewater samples for cyanide analysis. The effects of four approved...protocols on the results of the total cyanide analysis of effluents from four water...without pH adjustment generally gave total cyanide concentrations below the reporting limit...
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Giving cyanide the tree-tment: Jonathan Watt reports on a new concept for dealing with cyanide waste. (pumps & piping).(gold mining industry)(Statistical Data Included)
Magazine article from: World Mining Equipment; 3/1/2002; ; 700+ words
; ...Iron cyanide, WAD cyanide, and free cyanide (HCN). The latter is the toxic free...harmless when dissolved in water. WAD cyanide includes HCN and weak complexed metal-cyanides. Iron cyanide is composed of HCN, WAD, and nontoxic...
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Cyanide toxicity in the surgical intensive care unit: A case report
Magazine article from: The American Surgeon; 7/1/2001; ; 700+ words
; ...blood in certain clinical conditions. Cyanide toxicity is a known complication of sodium...Herein is reported a case of probable cyanide toxicity in an elderly trauma patient...the pitfalls of making the diagnosis of cyanide toxicity are discussed. HYPERTENSION...
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Cyanide Toxicity in Smoke Inhalation Victims - a Deadly but Treatable Poison.
PR Newswire; 8/18/2009; 700+ words
; ...fires had toxic blood concentrations of cyanide -- these victims died from breathing the smoke long before the fire killed them and cyanide poisoning can be treated," said Schnepp...smoke inhalation death is accepting that cyanide poisoning must be considered. "Contents...
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Cyanide special.
Magazine article from: Mining Journal; 4/27/2001; 700+ words
; ...bimonthly by The Mining Journal Ltd, has been devoted to the important topic of cyanide. (The term `cyanide' refers to one of three classifications of cyanide: total cyanide, weak acid dissociable cyanide and free cyanide.) In one of a...
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Modeling of natural cyanide attenuation in tailings impoundments`
Magazine article from: Minerals & Metallurgical Processing; 11/1/2000; ; 700+ words
; ...disposed of in a surface impoundment experience a loss of cyanide due to natural attenuation, which frequently reduces the cyanide concentration to very low levels. Quantifying cyanide losses in terms of impoundment geometry, local weather conditions...
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Efficient biodegradation of cyanide and ferrocyanide by Na-alginate beads immobilized with fungal cells of Trichoderma koningii.(Report)
Magazine article from: Canadian Journal of Microbiology; 9/1/2007; ; 700+ words
; ...Introduction Large amounts of cyanide and metal cyanides released from natural and...have an ability of degrading cyanide and metal cyanides when applied in soil by producing...important enzymes: rhodanese and cyanide hydratase (Ezzi and Lynch...
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Electroplating of jewellery: Getting the best from Cyanide Copper. (Special Feature).(Brief Article)
Magazine article from: Finishing; 6/1/2001; ; 700+ words
; ...highlights to give a worn antique appearance. Cyanide copper electrolytes are suitable for depositing...which require special pre treatments. Cyanide copper deposits are essential over zinc...castings and pewter. Special features of cyanide copper solution are the excellent throwing...
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Initial Silver Cyanide Leach Results Positive at Sierra Mojada.
Newspaper article from: Biotech Week; 7/8/2009; 700+ words
; ...pleased to announce very positive initial cyanide leach results from the silver mineralization...triplicate head grade analyses prior to cyanide leach analyses at a commercial laboratory...from the upper Southside zones. Overall cyanide leach solubility's were very high...
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Formation of Free Cyanide and Cyanogen Chloride from Chloramination of Publicly Owned Treatment Works Secondary Effluent: Laboratory Study with Model Compounds
Magazine article from: Water Environment Research; 3/1/2004; ; 700+ words
; ABSTRACT: The potential generation of cyanide species in wastewater upon chlorination...concentrations (approximately 5 to 25 g/L as cyanide) of cyanogen chloride (CNCl), a highly toxic cyanide species not measured in total or free cyanide...
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cyanide process
Book article from: The Columbia Encyclopedia, Sixth Edition
cyanide process or cyanidation, method for extracting gold from its...be roasted. It is then mixed with a dilute solution of sodium cyanide (or potassium or calcium cyanide) while air is bubbled through it. The gold is oxidized and...
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cyanide
Book article from: The Oxford Pocket Dictionary of Current English
...containing the anion CN − or the group −CN. The salts are generally extremely toxic. Compare with nitrile . ∎ sodium or potassium cyanide used as a poison or in the extraction of gold and silver.
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Cyanide
Encyclopedia entry from: Encyclopedia of Espionage, Intelligence, and Security
Cyanide █ JUDSON KNIGHT The prospects for an intelligence...compound of nitrogen, carbon, and other elements known as cyanide. The chemistry and biological effects of cyanide. When an atom of carbon bonds with an atom of nitrogen...
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hydrogen cyanide
Book article from: The Columbia Encyclopedia, Sixth Edition
hydrogen cyanide HCN, colorless, volatile, and extremely...prussic acid. Its salts are called cyanides . Hydrogen cyanide may be synthesized directly from ammonia...may also be prepared by reacting a cyanide salt, e.g., calcium cyanide...
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Glamis Gold, Ltd.
Book article from: International Directory of Company Histories
...carrying it to a leach pad. The ore is soaked with a cyanide solution, which separates gold from dirt. The cyanide and the gold drain to the bottom of the pile as a gold-oxygen-cyanide compound. The gold is filtered through activated carbon...
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