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By 1911, Haldane introduced the use of small animals for miners to detect dangerous levels of carbon monoxide underground, either white mice or canaries which have little tolerance for carbon monoxide thereby offering an early warning, i.e. canary in a coal mine. [9] The canary in British pits was replaced in 1986 by the electronic gas detector.
Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.
Carbon monoxide (chemical formula CO) is a poisonous, flammable gas that is colorless, odorless, tasteless, and slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the simplest carbon oxide. In coordination complexes, the carbon monoxide ligand is called carbonyl. It is ...
At higher levels, carbon monoxide exposure can be fatal. Other symptoms include: Impaired vision and coordination. Headaches. Dizziness. Confusion. Nausea.
"Upon inspection, their furnace was emitting dangerous levels of carbon monoxide. By installing high-quality CO detectors, I was able to diagnose and fix the issue, avoiding potential disaster."
What are the signs of carbon monoxide poisoning? Common symptoms are often flulike and include headache, dizziness, upset stomach, chest pain or confusion, but highly concentrated levels of CO can ...
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