One dirty pool, many cases of E. coli: Summer's swimming danger
As the weather warms and families flock to pools, dirty water may dampen the fun.
May 23, 2022
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As the weather warms and families flock to pools, dirty water may dampen the fun.
May 23, 2022
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For many people, the hot summer days are often spent swimming at the pool. But even though the water is usually clear with chlorine, it doesn't mean you should be looking underwater.
Jul 7, 2021
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(HealthDay)—A warning letter has been sent to a company marketing bogus and dangerous chlorine dioxide products for the prevention and treatment of COVID-19, the U.S. Food and Drug Administration says.
Apr 9, 2020
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Daniele Lantagne is dedicated to combating infectious diseases, such as diarrhea, cholera, and Ebola. At the School of Engineering's Environmental Sustainability Lab, her approach encompasses laboratory, field, and policy ...
Jan 23, 2020
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It kills a child under 5 every minute on average. Diarrheal disease, the second leading cause of death for children globally, could become even more difficult to control as poor urban areas with limited clean water access ...
Aug 9, 2019
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Just as probiotics can bring a wide range of benefits to your health, they can also make produce safer, according to new UConn research on cantaloupes.
Jun 22, 2018
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(HealthDay)—Before you take a dip in the pool this summer, be sure there's not too much chlorine in the water.
Jun 2, 2018
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(HealthDay)—Families seeking to cool off don't expect to pick up a nasty infection. Yet, outbreaks of a diarrhea-causing parasitic infection have doubled in recent years at swimming pools and water playgrounds in the United ...
May 18, 2017
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Eight out of twelve tested models of hand blenders are leaking chlorinated paraffins when used according to the suppliers' instructions. This is revealed in a report from Stockholm University where researchers analyzed a ...
Oct 24, 2014
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The use of natural pools - those that do not use chlorine or other chemical disinfection products - has seen an upward trend in recent years. Now, scientists from the University of Barcelona have discovered faecal contamination ...
Aug 9, 2013
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Chlorine ( /ˈklɔəriːn/ klohr-een; from Ancient Greek: χλωρóς khlôros "pale green") is the chemical element with atomic number 17 and symbol Cl. It is the second lightest halogen, found in the periodic table in group 17. The element forms diatomic molecules under standard conditions, called dichlorine. It has the highest electron affinity and the third highest electronegativity of all the elements; for this reason, chlorine is a strong oxidizing agent.
The most common compound of chlorine, sodium chloride, has been known since ancient times; however, around 1630, chlorine gas was obtained by the Belgian chemist and physician Jan Baptist van Helmont. The synthesis and characterization of elemental chlorine occurred in 1774 by Swedish chemist Carl Wilhelm Scheele, who called it "dephlogisticated muriatic acid air," having thought he synthesized the oxide obtained from the hydrochloric acid. Because acids were thought at the time to necessarily contain oxygen, a number of chemists, including Claude Berthollet, suggested that Scheele's dephlogisticated muriatic acid air must be a combination of oxygen and the yet undiscovered element, and Scheele named the supposed new element within this oxide as muriaticum. The suggestion that this newly discovered gas was a simple element was made in 1809 by Joseph Louis Gay-Lussac and Louis-Jacques. This was confirmed by Sir Humphry Davy in 1810, who named it chlorine, from the Greek word χλωρος (chlōros), meaning "green-yellow."
Chlorine is a component of various compounds, including table salt. It is the second most abundant halogen and 21st most abundant chemical element in Earth's crust. The great oxidizing potential of chlorine led it to its bleaching and disinfectant uses, as well as uses of an essential reagent in the chemical industry. As a common disinfectant, chlorine compounds are used in swimming pools to keep them clean and sanitary. In the upper atmosphere, chlorine-containing molecules such as chlorofluorocarbons have been implicated in ozone depletion. Elemental chlorine is extremely dangerous and poisonous for all lifeforms; however, chlorine is necessary to most forms of life, including humans, in form of chloride ions.
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