Mercury pollution | Wikipedia audio article
Channel: wikipedia tts
Date: 15/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Mercury_(element)


00:02:16 1 Properties
00:02:26 1.1 Physical properties
00:05:15 1.2 Chemical properties
00:06:01 1.2.1 Amalgams
00:07:31 1.3 Isotopes
00:08:24 2 Etymology
00:09:31 3 History
00:12:31 4 Occurrence
00:17:34 5 Chemistry
00:17:57 5.1 Compounds of mercury(I)
00:19:33 5.2 Compounds of mercury(II)
00:22:25 5.3 Organomercury compounds
00:23:40 6 Applications
00:24:26 6.1 Medicine
00:27:54 6.2 Production of chlorine and caustic soda
00:29:18 6.3 Laboratory uses
00:31:45 6.4 Niche uses
00:33:42 6.4.1 Cosmetics
00:34:34 6.5 Firearms
00:34:53 6.6 Historic uses
00:44:16 6.6.1 Historic medicinal uses
00:45:40 7 Toxicity and safety
00:47:39 7.1 Releases in the environment
00:53:28 7.2 Sediment contamination
00:54:54 7.3 Occupational exposure
00:55:37 7.3.1 Effects and symptoms of mercury poisoning
00:57:59 7.3.2 Treatment
00:59:01 7.4 Fish
01:00:23 8 Regulations
01:00:33 8.1 International
01:00:59 8.2 United States
01:03:39 8.3 European Union
01:04:46 8.4 Norway
01:05:41 8.5 Sweden
01:05:57 8.6 Denmark
01:06:18 9 See also



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SUMMARY
=======
Mercury is a chemical element with symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum ( hy-DRAR-jər-əm). A heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under these conditions is the halogen bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature.
Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by grinding natural cinnabar or synthetic mercuric sulfide.
Mercury is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lamps and other devices, though concerns about the element's toxicity have led to mercury thermometers and sphygmomanometers being largely phased out in clinical environments in favor of alternatives such as alcohol- or galinstan-filled glass thermometers and thermistor- or infrared-based electronic instruments.  Likewise, mechanical pressure gauges and electronic strain gauge sensors have replaced mercury sphygmomanometers.
Mercury remains in use in scientific research applications and in amalgam for dental restoration in some locales. It is also used in fluorescent lighting. Electricity passed through mercury vapor in a fluorescent lamp produces short-wave ultraviolet light, which then causes the phosphor in the tube to fluoresce, making visible light.
Mercury poisoning can result from exposure to water-soluble forms of mercury (such as mercuric chloride or methylmercury), by inhalation of mercury vapor, or by ingesting any form of mercury.