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Answering that age-old lament: Where does all this dust come from?
October 29, 2009Where does it come from? Scientists in Arizona are reporting a surprising answer to that question, which has puzzled and perplexed generations of men and women confronted with layers of dust on furniture and floors. Most of indoor dust comes from outdoors. Their report is scheduled for the Nov. 1 issue of ACS' Environmental Science & Technology, a semi-monthly journal.
In the study, David Layton and Paloma Beamer point out that household dust consists of a potpourri that includes dead skin shed by people, fibers from carpets and upholstered furniture, and tracked-in soil and airborne particles blown in from outdoors. It can include lead, arsenic and other potentially harmful substances that migrate indoors from outside air and soil. That can be a special concern for children, who consume those substances by putting dust-contaminated toys and other objects into their mouths.
The scientists describe development and use on homes in the Midwest of a computer model that can track distribution of contaminated soil and airborne particulates into residences from outdoors. They found that over 60 percent of house dust originates outdoors. They estimated that nearly 60 percent of the arsenic in floor dust could come from arsenic in the surrounding air, with the remainder derived from tracked-in soil. The researchers point out the model could be used to evaluate methods for reducing contaminants in dust and associated human exposures.
American Chemical Society
American Chemical Society
Dust Current Events and Dust News RSSBaffling boxy bulge
When targeting spiral galaxy bulges, astronomers often seek edge-on galaxies, as their bulges are more easily distinguishable from the disc.
Climate studies to benefit from 12 years of satellite aerosol data
Aerosols, very small particles suspended in the air, play an important role in the global climate balance and in regulating climate change.
Texas A&M prof to predict weather on Mars
Is there such a thing as "weather" on Mars? There are some doubts, considering the planet's atmosphere is only 1 percent as dense as that of the Earth.
Iron controls patterns of nitrogen fixation in the Atlantic
Scientists including researchers from the National Oceanography Centre, Southampton and the University of Essex have discovered that interactions between iron supply, transported through the atmosphere from deserts, and large-scale oceanic circulation control the availability of a crucial nutrient, nitrogen, in the Atlantic.
Climate variability impacts the deep sea
Deep-sea ecosystems occupying 60% of the Earth's surface could be vulnerable to the effects of global warming warn scientists writing in the Proceedings of the National Academy of Sciences.
'Ultra-primitive' particles found in comet dust
Dust samples collected by high-flying aircraft in the upper atmosphere have yielded an unexpectedly rich trove of relicts from the ancient cosmos, report scientists from the Carnegie Institution.
Physicist makes new high-res panorama of Milky Way
Cobbling together 3000 individual photographs, a physicist has made a new high-resolution panoramic image of the full night sky, with the Milky Way galaxy as its centerpiece.
Opening up a colorful cosmic jewel box
Star clusters are among the most visually alluring and astrophysically fascinating objects in the sky. One of the most spectacular nestles deep in the southern skies near the Southern Cross in the constellation of Crux.
A Long Night Falls Over Saturn's Rings
As Saturn's rings orbit the planet, a section is typically in the planet's shadow, experiencing a brief night lasting from 6 to 14 hours. However, once approximately every 15 years, night falls over the entire visible ring system for about four days.
As Greenland melts
Not that long ago - the blink of a geologic eye - global temperatures were so warm that ice on Greenland could have been hard to come by. Today, the largest island in the world is covered with ice 1.6 miles thick. Even so, Greenland has become a hot spot for climate scientists.
More Dust Current Events and Dust News Articles
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PSI Woodworking DBGULP Big Gulp Dust Hood by PSI Woodworking The huge 13 by 16-inch opening on this dust hood from PSI Woodworking makes it ideal for collecting dust from problem machines. Perfect for miter saws, lathes, radial arm saws, carving, sanding, and planers without hoods, this hood is lightweight and portable, and easy to position anywhere. The Big Gulp is made from tough ABS plastic with a 4-inch port to connect to any dust collection system. |
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Dust-off Professional Canned Air by Falcon Ideal for basic use, disposable Dust-Off is extra large. More economical to use, it delivers its dust-removing power at less cost per gram than competitive products. Suitable for workstations, labs, repair benches, household use, on-location photography, etc. Dust-Off Dusters Products safely and quickly blow away loose dust, dirt and lint from virtually any surface ... computer screens, keyboards, printers, scanners, compact discs, audio equipment, cameras, lenses, enlargers, copiers, fax machines, video equipment, sewing machines, electric razors, microscopes, binoculars...and more! |
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Dust by Elizabeth Bear (Author) On a broken ship orbiting a doomed sun, dwellers have grown complacent with their aging metal world. But when a serving girl frees a captive noblewoman, the old order is about to change.... Ariane, Princess of the House of Rule, was known to be fiercely cold-blooded. But severing an angel’s wings on the battlefield—even after she had surrendered—proved her completely without honor. Captive, the angel Perceval waits for Ariane not only to finish her off—but to devour her very memories and mind. Surely her gruesome death will cause war between the houses—exactly as Ariane desires. But Ariane’s plan may yet be opposed, for Perceval at once recognizes the young servant charged with her care. Rien is the lost child: her sister. Soon they will escape, hoping to stop... |
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Dust by Dust CD reissue of the debut album from the American Rockers, a mixture of British-influenced Hard Rock and Prog. The album was originally released on the Kama Sutra label in 1971, introducing a group of young players to the world at large, most of whom would move on to bigger things. The rhythm section featured drummer Marc Bell, who would later join New York Punkers Richard Hell & The Voidoids, while bassist Kenny Aaronson would join labelmates Stories by their third album. The songwriting team of producer Kenny Kerner and singer/guitarist Richie Wise would go on to produce the third Stories album. Seven tracks. Repertoire. |
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DELTA 50-760 1.5HP 1,200 CFM Vertical Bag Dust Collector by Delta Help protect your health with the Delta 50-760 1-1/2-Horsepower, 1,200-CFM Dust Collector. Thanks to one-micron filtration bags, a powerful motor, replaceable dust ports, easy maneuverability, durable construction, and more, the 50-760 provides dependable dust collection for a clean work environment. And even with its powerful suction capability, this dust collector is surprisingly quiet.
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Dust Starring: Joseph Fiennes, David Wenham, Adrian Lester, Anne Brochet, Nikolina Kujaca Directed By: Milcho Manchevski Also With: Milcho Manchevski (Writer), Alex Nikolic (Producer), Branislav Brana Srdic (Producer), Chris Auty (Producer), Domenico Procacci (Producer), Frank Dragun (Producer), Gjorgji Simeonov (Producer) Studio: Lions Gate Home Ent. Release Date: 02/06/2007 Run time: 124 minutes Rating: R |
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Dust by Diamond Comic Distributors 1938: A secret German expedition to Antarctica discovers the ultimate weapon an alien spacecraft with a living crewmember! 1950: Everything has changed. The Second World War rages on with no end in sight. There are no more nations, no more alliances. There is only...DUST. A world where reverse-engineered alien technology has given us walking tanks, as well as fighters and bombers that look more like flying saucers than what we know today, the world of Dust is both very similar to the Earth we know, and also quite different. Players take control of the high-tech armies of this brave new world in a struggle for the future! Including a large game board and over 800 plastic playing pieces, Dust features a card-based system that controls initiative, movement, and production, while combat... |
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Electrolux 62396-2 Dust Cup Vacuum Filter by Electrolux Home Care Model No. DCF 10 dust cup filter pack for the model No. 430 series. For optimum performance, change your filter every 6 months. |
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Dust by Charles R. Pellegrino (Author) In an idyllic Long Island community, paleobiologist Richard Sinclair is one of the first to suspect that the environment has begun to wage bloody, terrifying war on humanity. What initially appear to be random, unrelated events are actually violent eruptions in a worldwide biological chain reaction. Along with a brave group of survivors, Sinclair must learn to understand the catastophe while it roils around them, slowly crumbling a panicked world and threatening apocalypse. The survival of humankind depends on finding an answer immediately--or else they will face the final, tragic dentiny of their species.In an idyllic Long Island community, paleobiologist Richard Sinclair is one of the first to suspect that the environment has begun to wage bloody, terrifying war on humanity. |
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Jet JW1015 4-Inch Y-Fitting Dust Hose Connector by JET Includes 4" "Y" Fitting - JW1015 |
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