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Concentration
Amount of a chemical in a particular volume or weight of air, water, soil, or other medium. See parts per billion, parts per million. See parts per billion, parts per million. (source: EPA) Background from Wikipedia For other uses, see Concentration (disambiguation). In chemistry, concentration is the measure of how much of a given substance there is mixed with another substance. This can apply to any sort of chemical mixture, but most frequently is used in relation to solutions, where it refers to the amount of solute dissolved in a solvent. To concentrate a solution, one must add more solute, or reduce the amount of solvent (for instance, by selective evaporation). By contrast, to dilute a solution, one must add more solvent, or reduce the amount of solute. Unless two substances are fully miscible there exists a concentration at which no further solute will dissolve in a solution. At this point, the solution is said to be saturated. If additional solute is added to a saturated solution, it will not dissolve. Instead, phase separation will occur, leading to either coexisting phases or a suspension. The point of saturation depends on many variables such as ambient temperature and the precise chemical nature of the solvent and solute. Foreign Policy (subscription)As the figure indicates, the data do not show much of a tendency at all toward increasing concentration among market leaders. Centre plans to bring city periphery under urban fold - 22 Oct 2007 Economic Times,Second, there has been an increasing concentration of urban population in class 1 towns and cities. Therefore, as mega cities are under severe strain, Montreal's Jewish community honours Mohawk war hero who helped ... - 22 Oct 2007 The Canadian PressMichael Delisle Sr. was among the first to enter the Dachau concentration camp after its liberation, and on the first anniversary of his death Montreal's Groups: Holocaust went beyond Jews - 22 Oct 2007 United Press InternationalPETERSBURG, Fla., Oct. 22 (UPI) -- Some non-Jewish survivors of German concentration camps say they are being denied their place in the history books. Mold is found in trailer housing kindergarten - 22 Oct 2007 The Jersey Journal - NJ.com,27, but not returned to the district until Thursday morning - confirmed the presence of mold, the concentration of mold spores isn't considered harmful to Holocaust survivor’s story inspires teen - 22 Oct 2007 The Patriot-News - PennLive.com,For hours, Sean videotaped the rabbi’s testimony, as he spoke about his stay at the Auschwitz concentration camp, his unlikely survival, and the legacy he Today’s forecast: yet another blast of hot air - 22 Oct 2007 Times Online,Its research shows that since 1998 the average temperature of the planet has not risen, even though the concentration of carbon dioxide in the atmosphere Elderly woman is wanted Nazi war criminal - 22 Oct 2007 Telegraph.co.uk,When found by Mr Walters last Friday, Wallisch refused to comment on his investigation into her past as a brutal concentration camp guard. Evans catches five passes in win - 22 Oct 2007 Rotoworld.comOn the play, the ball originally hit off Evans' chest but he showed good concentration to collect it and keep running. Evans is safe to return to lineups in Fighting Global Warming The Right Way - 22 Oct 2007 Hartford Courant,According to the scientists of the IPCC, keeping the concentration below 500 ppm will avoid a high risk of global warming that would cause severe effects. Liberalized hunting rule keeps deer population from growing - 22 Oct 2007 Post-Bulletin,Though the county's herd averages about 10 deer per square mile, the concentration can be much higher in some places, Nelson said. At a concentration of 20 Andree de Jongh, 90; resistance fighterhelped downed Allied airmen ... - 22 Oct 2007 Los Angeles Times,The British authorities, whom she sought out for logistical and financial support, and Germans, who eventually sent her to concentration camps, Taking aim together - 22 Oct 2007 Kenai Peninsula Online,Once archers have the mechanics of firing off a shot down pat, Malquist said their concentration becomes the next area of focus. "Concentration is critical FIIs reduce holding in 15 blue chips - 22 Oct 2007 Economic Times,...“This may signal a shift in FII concentration from blue chip stocks to other high growth stocks in mid-cap segments among others,� a leading analyst from a MIT researchers create new gel that can change color on demand - 22 Oct 2007 Xinhua,...new structured gel that can rapidly change color in response to a variety of stimuli, including temperature, pressure, salt concentration and humidity. Environmental danger to growth - 22 Oct 2007 Economic Times,The atmospheric concentration of carbon dioxide reached 379 parts per million in 2005 compared to a pre-industrial level of 280 ppm. Innovatiefactor cultuur - 22 Oct 2007 ScienceGuide,Creative cities are emerging as urban centres with a high concentration of economically profitable creative industries and an innovative and creative labour Gekko Systems’ prototype underground pre-concentration plant - Oct 21, 2007 Ferret,In week three’s short info pack Gekko Systems discussed the benefits and possibilities of gravity and flotation pre-concentration for the treatment of gold Xavier adding concentration in business intelligence - Oct 18, 2007 Bizjournals.com,The university said Thursday that it will offer a concentration in business intelligence, the first of its kind in the Tri-State, according to a news New Product: Swagelok’s CR-288 chemical concentration monitor ... - Oct 18, 2007 FabtechProduct Briefing Outline: The Swagelok CR-288 concentration monitor addresses a critical requirement in the semiconductor industry for improved monitoring 10 prominent cases cracked by American Nazi hunters - Oct 20, 2007 Austin American-Statesman (subscription),Signed decrees expropriating all Jewish property, requiring Jews to wear distinctive markings on their outer clothing, setting up a nationwide concentration Dar admits he wrongly adjudged Tendulkar out - Oct 20, 2007 CricInfo.com,..."On that ball, Flintoff was very close to bowling a no-ball and as I was looking at his foot, my concentration was disturbed." Though he regretted the Too much concentration of power in Kremlin: Rice - Oct 13, 2007 Hindu,..."I think there is too much concentration of power in the Kremlin. I have told the Russians that. Everybody has doubts about the full independence of the Rice condemns "concentration of power in the Kremlin" - Oct 13, 2007 Radio Netherlands,Moscow - During a visit to Russia, US Secretary of State Condoleezza Rice has told journalists that: "There is too much concentration of power in the Africa: Region Can Learn From 15th Century Portugal and Spain - Oct 19, 2007 AllAfrica.com,Among these are: acting right, thinking right, concentration and above all emphasis on learning. When you see the Japanese pressing their palms and taking a Red Tide Concentration High along Gulf Coast - Oct 18, 2007 EmeraldCoast.com,According to health officials, water samples collected early this week from Escambia, Santa Rosa, Okaloosa and Walton counties in northwest Florida show Why Your Customer Count May Not Matter - Oct 19, 2007 TheStreet.comAccording to what you may have been told, such a concentration is very risky; you should never put all your eggs in one basket. Most experts would advise His Mom in a Nazi concentration camp, 4-yr-old homeless street kid ... - Oct 9, 2007 Indian Express,He was only three when his mother, Lucy Ramberg, a member of a group of artists known as the Bohemians, was sent to the Dachau concentration camp in Germany Brief Meditation Can Improve Concentration, Reduce Stress - Oct 9, 2007 Voice of America...people do not have to practice meditation for months or years at a time to get the benefits, including reduction of stress and improved concentration. “They’ve Relegated Us to Authentic Concentration Camps ... - Oct 16, 2007 The NarcoSphere,British Columbian women made of the organization that forces the nations and peoples onto reservations, which they call “authentic concentration camps. Pre-concentration plants from Gekko Systems - Oct 16, 2007 Ferret,It is important to note that mineralogy and metallurgical test work is required on your ore to investigate whether it is amenable to pre-concentration. Italy Concentration Key To Beat Groningen - Prandelli - Oct 3, 2007 Goal.com,Concentration Key To Beat Groningen - Prandelli The Fiorentina coach is expecting his player to be at their best for tonight's Uefa Cup clash against the Trickle-Up Economics: New Report Reveals Staggering Global Wealth ... - Oct 8, 2007 AlterNet,A new business study on global household wealth documents how the world's wealth is continuing to concentrate in the pockets of the awesomely affluent. Rugby-World-Pumas try to keep concentration amid euphoria - Oct 3, 2007 Reuters.uk,Argentina, who have shown great concentration and willpower in their pursuit of World Cup glory, are having to work harder than ever at keeping their feet US concerned about concentration of power in Russia - Oct 1, 2007 Times of India,NEW YORK: US Secretary of State Condoleezza Rice said in a newspaper interview on Monday that Washington is concerned about the "concentration of power" in South America Passarella: We Lacked Concentration In Defense - Oct 1, 2007 Goal.com,Passarella: We Lacked Concentration In Defense Daniel Passarella, the manager of River Plate, admitted to reporters that his side lacked concentration in Is it OK to pour salt water on the soil? - Oct 19, 2007 Roanoke Times,Can we use this water to water trees and the lawn or is the salt concentration going to be harmful? A: The salt concentration will likely harm plants. US attorney general candidate rejects torture, vows independence - Oct 18, 2007 Christian Science Monitor,Soldiers of this country liberated concentration camps and photographed what they saw there as a record of the barbarism they opposed. Kidman film can't shoot at concentration camp - Sep 28, 2007 RTE.ie,Seferens said: "Former concentration camp sites are cemeteries - it's just not appropriate to use them as film sets." German concentration camp says "no" to Kidman film - Sep 27, 2007 Reuters UK,Horst Seferens, a spokesman for the Sachsenhausen concentration camp north of Berlin, said makers of the film "The Reader" wrote an email to inquire if they Cheerleaders can ruin a football player's concentration - Oct 15, 2007 The Daily News,Jesse Palmer of TSN knows first- hand that cheerleaders can be a distraction to football players. This was apparent to Palmer during a start at quarterback Sixth Formers in Arts Concentration Reflect on Their Growth ... - Oct 11, 2007 The Choate News,Arts Concentration, a selective program for students involved rigorously in the arts, is a unique program at Choate. It has three different areas: Theatre, Would 'Dancing in the Seats' aid concentration? - Oct 2, 2007 Scotsman,AS A kid, I dreaded the beginnings of summer. First, direct sunlight increased the number and vulgarity of the freckles on my face. Second, on sunny days, Concentration camp survivor lived next to former SS guard for years - Sep 23, 2007 Chicago Sun-Times,Gasch, a survivor of the Auschwitz concentration camp, saw the picture soon after he first moved in, when Hartmann and his wife invited him to their house. EURO FAILURE 'HARD TO TAKE' - CAMPBELL - Oct 18, 2007 Sportinglife.com,Campbell, 33, believes England paid the price for lapses of concentration in Moscow as Russian substitute Roman Pavlyuchenko struck twice in the space of Noise 'helps improve concentration' - Sep 24, 2007 The Press AssociationBackground noise may help unruly schoolchildren pay attention in class, new research suggests. The discovery was made by Swedish scientists who tested a Italy: Neo-Nazis vacation in German concentration camp - Oct 12, 2007 آكي,Milan, 12 Oct. (AKI) - A group of neo-Nazis from the northern Italian city of Bolzano have travelled to the German concentration camp of Dachau where they Perth Fun, Western Australia: Concentration test - Oct 11, 2007 Sunday Times.au,There are seven levels in this test. Here's a rundown of what they say about your concentration: Level 1: Slower on the upkeep than the average person. Putin's Iranian Visit Ends Any Hope for UN Sanctions to Control ... - Oct 18, 2007 Crime Library,Since the enrichment process is a process of concentration, increasing the starting concentration geometrically affects the efficiency and speed of the Jackson: Imus Media Megaphone Suggested ‘Corruption of Concentration’ - Oct 12, 2007 Broadcasting & Cable (subscription),...and TV than all of the African-American, Hispanic and Asian talkers put together -- which, he added, was suggestive of the "corruption of concentration. News index | RSS | News Feed Advertisements: Organic Apparel from Patagonia | Insect-repelling clothing |
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