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Acute and subchronic toxicity as well as mutagenic evaluation of essential oil from turmeric (Curcuma longa L). [Food Chem Toxicol. 2013] - PubMed - NCBI

The present study investigated the acute, subchronic and genotoxicity of turmeric essential oil (TEO) from Curcuma longa L. Acute administration of TEO was done as single dose up to 5 g of TEO per kg body weight and subchronic toxicity study for thirteen weeks was done by daily oral administration of TEO at doses 0.1, 0.25 and 0.5 g/kg b.wt. in Wistar rats. There were no mortality, adverse clinical signs or changes in body weight; water and food consumption during acute as well as subchronic toxicity studies. Indicators of hepatic function such as aspartate aminotransferase (AST), alanine amino transferase (ALT) and alkaline phosphatase (ALP) were unchanged in treated animals compared to untreated animals. Oral administration of TEO for 13 weeks did not alter total cholesterol, triglycerides, markers of renal function, serum electrolyte parameters and histopathology of tissues. TEO did not produce any mutagenicity to Salmonella typhimurium TA-98, TA-100, TA-102 and TA-1535 with or without metabolic activation. Administration of TEO to rats (1 g/kg b.wt.) for 14 days did not produce any chromosome aberration or micronuclei in rat bone marrow cells and did not produce any DNA damage as seen by comet assay confirming the non toxicity of TEO.

Walter Agustin Parada Villarroel's insight:

Its not a good example of what i am looking for . Nevertheless, I know that (TEO) turmeric essential oil is not really toxic in a short-term contact.

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Radioactivity of Uranium 237

Radioactivity of Uranium 237 | toxic compounds | Scoop.it
Finding the rate of radioactivity of Uranium 237 – the synthetic isotope which does not occur in any significant amount in nature – but which was first discovered during photo-fission experiments with uranium in Japan in 1940 – is very difficult.

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MSDS/Iron (III) Chloride Anhydrous-Cloruro de Hierro

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Es un buen ejemplo de un MSDS para la identificacion de un quimico peligroso. En este caso un quimico que dana los rinones y otros organos internos ademas de ser inflamable.

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'Salvados' denuncia la toxicidad de determinados alimentos y la laxa política medioambiental del Gobierno

'Salvados' denuncia la toxicidad de determinados alimentos y la laxa política medioambiental del Gobierno | toxic compounds | Scoop.it
"Hay muchos motivos, muy serios, para estar alarmados sobre lo que comemos", declara un catedrático de Salud Pública a Jordi Évole
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Study Confirms Minimal Health Risks from E-Cig Chemicals - Vapable

Study Confirms Minimal Health Risks from E-Cig Chemicals - Vapable | toxic compounds | Scoop.it

A study has been released by Professor Igor Burstyn from the Drexel University School of Public Health that confirms chemicals in e-cigarettes pose no health concern for users or bystanders. This is the primary definitive study of e-cigarette chemistry and finds that there are no health concerns based on generally accepted exposure limits.  


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La exposición al plomo supone 143.000 muertes al año, la mayoría en regiones en desarrollo

La exposición al plomo supone 143.000 muertes al año, la mayoría en regiones en desarrollo | toxic compounds | Scoop.it
Noticia: La exposición al plomo supone 143.000 muertes al año, la mayoría en regiones en desarrollo - Sustainlabour :: Fundación Laboral Internacional para el Desarrollo Sostenible
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Cianuro toxicidad y destruccion biologica

El cianuro es un químico ampliamente utilizado por la industria minera para la disolución o lixiviación de metales preciosos, específicamente el oro. Su alt
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Sulphur gas remediation over metal oxide nanoparticles - spectroscopyNOW.com (blog)

Sulphur gas remediation over metal oxide nanoparticles spectroscopyNOW.com (blog) Indian scientists at the Defence Research and Development Establishment and Jiwaji University have been examining the disposal of sulphur mustard, which is another...
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China Tries to Clean Up Toxic Legacy of Its Rare Earth Riches

China Tries to Clean Up Toxic Legacy of Its Rare Earth Riches | toxic compounds | Scoop.it
Export restrictions have done little to slow the devastation resulting from rare earth mining, including contamination that threatens the water supply of millions.

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It's your world. Jump in. - Public Radio International

It's your world. Jump in. - Public Radio International | toxic compounds | Scoop.it
It's your world. Jump in.
Public Radio International
Syria's president, Bashar al-Assad, made the statement that the nerve agent, sarin, is easy to make, say, in your kitchen.
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Panama hopeful US will finally clean up chemical weapons left from WWII

Panama hopeful US will finally clean up chemical weapons left from WWII | toxic compounds | Scoop.it
Panama and the United States are locked in a dispute over unexploded chemical weapons US soldiers left on an island of the Central American country over 60 years ago, now in the way of a major canal expansion project.

Via Professor Al Anon
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Un riesgo latente porfin sera sofocado.

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Poison Gas and World War Two

Poison Gas and World War Two | toxic compounds | Scoop.it
The use of poison gas in World War Two was a very real fear. Poison gas had been used in World War One and many expected that it would be used in World War Two.
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What mustard gas is and how it affects victims

Mustard gas is a substance used in chemical warfare. It is the popular name for the compound with the chemical designation 1,1-thiobis(2-chloroethane) (chemical formula: Cl-CH2-CH2-S-CH2-CH2-Cl). Mustard gas has a number of other names by which it has been known over the years, including H, yprite, sulfur mustard, and Kampstoff Lost. Because the impure substance is said to have an odor similar to that of mustard, garlic, or horseradish, the name mustard gas is most commonly applied. However, in the pure form, mustard gas has neither color nor odor. The gas was used for the first time as an agent of chemical warfare during World War I (1914-1918), when it was distributed with devastating effect near Ypres in Flanders (Belgium) on July 12, 1917.

The synthesis of mustard gas was reported much earlier than its first use as a chemical weapon. In 1860, scientist Frederick Guthrie observed that when ethylene reacted with chlorine a substance was produced which, in small quantities, could produce toxic effects on the skin. Exposure to low concentrations of mustard gas classically causes the reddening and blistering of skin and epithelial tissue. On inhalation, the gas will cause the lining of the lungs to blister and leads to chronic respiratory impairment. Higher concentrations of mustard gas will attack the corneas of the eyes and eventually cause blindness. Exposure to mustard gas can lead to a slow and painful death and any moist area of the body is especially susceptible to its effects. The compound is only slightly soluble in water, but it undergoes a hydrolysis reaction liberating highly corrosive hydrochloric acid and several other vesicant intermediates, which are able to blister epithelial surfaces.

Despite the ease of hydrolysis, mustard gas may be preserved underground in a solid form for up to ten years. The reason for this ability is that in an environment where the concentration of water is relatively low, the reaction pathway proceeds to form an intermediate known as thiodiglycol. In a low moisture environment, most of the water available at the solid surface is used in this reaction. Subsequently, another intermediate in the reaction pathway, a sulfonium ion, reacts with the thiodiglycol in the place of water. This reaction then creates stable, non-reactive sulfonium salts, which can act as a protective layer around the bulk of the solid mustard preventing further degradation.

Mustard gas as a chemical weapon is a particularly deadly and debilitating poison and when it was first used in 1917, it could penetrate all the masks and protective materials that were available at that time. In World War II (1939-1945), several Liberty cargo ships (nicknamed ugly ducklings) were sunk by German U-boats in the port of Bari, Italy (December 2, 1942), while carrying supplies of mustard gas. A cloud of gas spread over the water causing a large loss of life and many injuries (such as burns from the mustard gas). Since then, urethane was found to be resistant to mustard gas. Urethane also has several other advantages for use in combat: it is tough, resistant to cuts, and is stable at a wide range of temperatures.

Detoxification procedures from mustard gas are difficult because of its insolubility and also because of the drastic effects it can have on lung epithelial tissue following inhalation. During World War I, physicians had no curative means of treating the victims of mustard gas exposure. The only method of detoxification that was known involved a rather extreme oxidation procedure using superchlorinated bleaches, such as 5% sodium hypochlorite. Today, several novel methods of detoxification have been developed to counter the effects of mustard gas and these include the use of sulphur-amine solutions and magnesium monoperoxyphthalate. The most effective method to date employs peroxy acids, because they are able to react quickly with the mustard gas. Furthermore, the addition of a catalyst can speed up the detoxification reaction even more effectively.

Although mustard gas has been shown to have long-term carcinogenic properties, it can also be used as an agent in the treatment of cancer. In 1919, it was observed that victims of mustard gas attack had a low white bloodcell count and bone marrow aplasia (tissue growth failure). More detailed research in the years following 1946 showed that nitrogen mustards, which differ from traditional mustard gas by the substitution of a sulphur atom by a nitrogen, could reduce tumor growth in experimental mice by cross-linking DNA (deoxyribonucleic acid) strands. It had been shown previously that the sensitivity of mouse bone marrow to mustard gas was similar to that of humans and more detailed research eventually led to successful clinical trials. Today, nitrogen mustards are part of the spectrum of substances used in modern anti-cancer chemotherapy. They are primarily used in the treatment of conditions such as Hodgkin's disease and cancers of the lymph glands.


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Study Reveals E-Cigarettes Contain Formaldehyde and Produce Toxic Secondhand “Smoke”

Study Reveals E-Cigarettes Contain Formaldehyde and Produce Toxic Secondhand “Smoke” | toxic compounds | Scoop.it
The trendy e-cig may not be as "safe" as originally thought. A new study shows that they contain volatile organic compounds, acetone, formaldehyde, acetaldehyde, benzopyrene as well as silicate and various metal particles.

Via Jocelyn Stoller
Walter Agustin Parada Villarroel's insight:

thinking that security its a general-public matter is essential to prevent  every single illness or intoxication

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From MSDS to SDS: 3 Reasons OSHA’s Transition to GHS is Going to Get Worse Before it Gets Better

Dan Ciancio | Compliance Education, GHS, MSDS / Chemical Management, MSDS | SDS, OSHA

Via Va. Assoc. of Hazmat Response Specialists
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Senior Scientist Blasts Industrial Chemicals in U.S. Foods

Senior Scientist Blasts Industrial Chemicals in U.S. Foods | toxic compounds | Scoop.it
A report reveals how potentially dangerous food additives plague our food, and one senior scientist blasted the FDA's regulation attempts for food safety.

Via Troy Mccomas (troy48)
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Petition: OBVIOUSLY, 'Food' Industry KNOWINGLY Put Toxic Chemicals in Our Food - Stand Up For Safer Chemicals

Petition: OBVIOUSLY, 'Food' Industry KNOWINGLY Put Toxic Chemicals in Our Food - Stand Up For Safer Chemicals | toxic compounds | Scoop.it
Toxic chemicals in your sofa, household products and more are linked to cancer, infertility, and asthma. (2871 signatures on petition)

Via #BBBundyBlog #NOMORELIES Tom Woods #Activist Award #Scoopiteer >20,000 Sources >250K Connections http://goo.gl/ruHO3Q
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LAS 10 PEORES SUSTANCIAS TOXICAS - Curiosidades, Top 10, Interesantes

LAS 10 PEORES SUSTANCIAS TOXICAS - Curiosidades, Top 10, Interesantes Lograr metas, Desarrollo personal, Tener exito raros, asombrosos, misterios, paranormal...
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What is Sarin Gas?

Hank discusses the chemistry of sarin, the nerve agent that killed more than 1400 people in a chemical weapons attack in Syria. Like SciShow? Want to help su...
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ORNL's Bill Russell: Of mice and mutagens - Oak Ridger

ORNL's Bill Russell: Of mice and mutagens - Oak Ridger | toxic compounds | Scoop.it
ORNL's Bill Russell: Of mice and mutagens
Oak Ridger
Like other geneticists, Bill looked for a threshold dose-an exposure level below which no genetic damage is detected. ...
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Rescooped by Walter Agustin Parada Villarroel from FOOD? HEALTH? DISEASE? NATURAL CURES???
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Toxic sodas and sports drinks exposed in new GAIAM TV episode of 'Secrets to Health'

Toxic sodas and sports drinks exposed in new GAIAM TV episode of 'Secrets to Health' | toxic compounds | Scoop.it
Toxic sodas and sports drinks exposed in new GAIAM TV episode of 'Secrets to Health' (Toxic sodas and sports drinks exposed in new GAIAM TV episode of 'Secrets to Health' http://t.co/lUVO7EyzNx)...

Via Troy Mccomas (troy48)
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Emma Murphy's curator insight, November 20, 2013 10:54 PM

This is an alarming article! Two years ago, I did a science fair project just like this and the results were repulsive! My mom is a dentist so this is not the first time I have seen something like this. I had always known how damaging soda is, but never quite realized with sports drinks. The article is great but the youtube video is only 41 seconds long. Also, the video is not very informative. 

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Russia claims it has evidence sarin gas was 'home-made' - Telegraph.co.uk

Russia claims it has evidence sarin gas was 'home-made' - Telegraph.co.uk | toxic compounds | Scoop.it
Telegraph.co.uk Russia claims it has evidence sarin gas was 'home-made' Telegraph.co.uk Sergei Lavrov said samples taken from the scene of the August 21 attack, which killed nearly 1,500 people and sparked a diplomatic crisis that saw the US face...
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Poachers kill 300 #elephants (and other animals) with cyanide in 'worst massacre in southern #Africa for 25 years'

Poachers kill 300 #elephants (and other animals) with cyanide in 'worst massacre in southern #Africa for 25 years' | toxic compounds | Scoop.it

Treehugger, October 33, 2013

In 2011, at least 17,000 African elephants were killed for their tusks...

Zimbabwe Hwange National Park...seen from the air to be littered with the deflated corpses of elephants, often with their young calves dead beside them, as well as those of other animals. There is now deep concern that the use of cyanide – first revealed in July, but on a scale that has only now emerged – represents a new and particularly damaging technique in the already soaring poaching trade... http://www.treehugger.com/endangered-species/poachers-kill-300-elephants-cyanide-worst-massacre-southern-africa-25-years.html

 

 

August 13, 2013 Guardian Environment
                      THE WILDLIFE POACHING EPIDEMIC:
  ▶  EXPERTS ESTIMATE THAT A MIND-BOGGLING 25,000 TO 40,000 ELEPHANTS ARE SLAUGHTERED ANNUALLY ACROSS THE AFRICAN CONTINENT.  RHINO POACHING UP IN 2013 http://www.theguardian.com/environment/2013/aug/13/war-african-poaching-militarisation-fail

 

▶  EXTINCTION AHEAD: TWO-THIRDS OF FOREST ELEPHANT SLAUGHTERED BY IVORY POACHERS IN PAST DECADE  http://sco.lt/5cG05R

 

 

▶  INSIDE THE GLOBAL INDUSTRY THAT'S SLAUGHTERING AFRICA'S ELEPHANTS -- A CRIMINA HORROR http://sco.lt/62hDkX

 

 

▶  THE TRAGIC SLAUGHTER OF TENS OF THOUSANDS OF ELEPHANTS -- JUST FOR THEIR TUSKS  http://sco.lt/8GNLvN

 

▶  NEW THREAT TO CONSERVATION OF WILDLIFE:  "CYBERPOACHING" - EXTINCTION NEARS http://sco.lt/6CmpXt

 

 

 

 

 


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Gas mask description

Gas mask description | toxic compounds | Scoop.it

breathing device designed to protect the wearer against harmful substances in the air. The typical gas mask consists of a tight-fitting facepiece that contains filters, an exhalation valve, and transparent eyepieces. It is held to the face by straps and can be worn in association with a protective hood. The filter elements in the cheeks of the mask remove contaminants from the air that is drawn through the mask by the wearer's inhaling. The filters, which can be replaced, clean the air but do not add oxygen to it (some masks are connected by a hose to a separate tank of oxygen). The most common filters employ fibre screens (to strain out finely divided solid particles) and chemical compounds such as charcoal (to capture or chemically alter poisonous gases in the air). Charcoal absorbs and holds a fairly large volume of poisonous gases.

Gas masks are widely used by the world's armed forces. Although it is possible to design filtering devices that will neutralize almost any specific toxic substance in the air, it is impossible to combine in one mask protection against all toxic substances. Military gas masks are accordingly constructed with a view to counteracting those chemicals that are thought most likely to be used in wartime. Gas masks are effective only against those chemical-warfare agents that are dispersed as true gases and are injurious when breathed. Agents such as mustard gas that are dispersed in liquid form and attack the body through the skin surface necessitate the use of special protective clothing in addition to gas masks.


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Four WWII Posters That Taught Soldiers to Identify Chemical Weapons by Smell

Four WWII Posters That Taught Soldiers to Identify Chemical Weapons by Smell | toxic compounds | Scoop.it
These posters, produced by the Medical Training Replacement Center at Camp Barkeley in Abilene, TX, were meant to teach soldiers about to enter World War II to recognize and treat the effects of chemical weapons.

Via Jessica Robson Postlethwaite
Walter Agustin Parada Villarroel's insight:
Esto fue una forma de actuar contra las armas quimicas usadas en la segunda mundial. Ademas marco el inicio del estudio de los agentes quimicos que danan la salud humana y hasta se dieron recomendaciones de que se deberia hacer contra estos agentes y como se los podia identificar.
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