News tagged with pollutant
A genetic alternative to fertilizer
Several studies have shown that a lack of nitrogen in soils adversely affects crop yields. The modern use of nitrogen fertilizers has improved yields to meet expanding global food demand, but in some cases ...
Jun 01, 2012 |
not rated yet |
0
Winds of change for pollution sensing
(Phys.org) -- The Great Smog of London is often upheld as a time when pollution reached appalling levels: over a four-day period in December 1952, the capital came to a standstill, cars were abandoned, airports ...
Jun 01, 2012 |
not rated yet |
1
Silkmoth inspires novel explosive detector
Imitating the antennas of the silkmoth, Bombyx mori, to design a system for detecting explosives with unparalleled performance is the feat achieved by a French research team. Made up of a silicon microcantilever ...
Chemistry / Analytical Chemistry
Jun 01, 2012 |
5 / 5 (5) |
0
Farm ponds cut agricultural water pollution
The reintroduction of farm ponds could significantly reduce agricultural pollution in our streams and rivers, according to new research.
Jun 01, 2012 |
4.7 / 5 (3) |
0
Kitchen exhaust fans vary in effectiveness in reducing indoor air pollution
(Phys.org) -- Cooking exhaust hoods designed for home kitchens vary widely in their ability to capture and vent away the air pollutants generated by the gas burners on cook stoves, according to a study by ...
May 31, 2012 |
2 / 5 (1) |
1
|
Beetle-infested pine trees contribute more to air pollution and haze in forests
The hordes of bark beetles that have bored their way through more than 6 billion trees in the western U.S. and British Columbia since the 1990s do more than damage and kill stately pine, spruce and other trees. ...
May 23, 2012 |
not rated yet |
0
Light pollution transforming insect communities
(Phys.org) -- Street lighting is transforming communities of insects and other invertebrates, according to research by the University of Exeter. Published today in the journal Biology Letters, the study shows ...
May 23, 2012 |
5 / 5 (3) |
0
|
Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals
Amid growing concerns about the spread of harmful mercury in plants and animals, a new study by researchers from The Johns Hopkins University and The National Aquarium has compared levels of the chemical in ...
May 21, 2012 |
3.3 / 5 (4) |
0
Using graphene, scientists develop a less toxic way to rust-proof steel
(Phys.org) -- University at Buffalo researchers are making significant progress on rust-proofing steel using a graphene-based composite that could serve as a nontoxic alternative to coatings that contain hexavalent ...
Nanotechnology / Nanomaterials
May 18, 2012 |
4.5 / 5 (6) |
2
|
Americans support national clean-energy standard: study
The average U.S. citizen is willing to pay 13 percent more for electricity in support of a national clean-energy standard (NCES), according to Yale and Harvard researchers in Nature Climate Change.
Technology / Energy & Green Tech
May 13, 2012 |
3.2 / 5 (9) |
34
|
Tracking nutrient pollutant in Chesapeake
Too much of a good thing can kill you, the saying goes.
May 10, 2012 |
5 / 5 (1) |
0
Beijing to get rid of 1,200 polluting enterprises
Authorities in Beijing said Wednesday they plan to get rid of 1,200 high-polluting enterprises by 2015 to improve air quality in the Chinese capital, one of the world's most polluted cities.
May 09, 2012 |
not rated yet |
0
Shell says two new leaks on Nigerian pipeline
Oil giant Shell on Monday said two new leaks had occurred on one of its pipelines in southern Nigeria after similar incidents in recent days blamed on crude theft.
May 07, 2012 |
not rated yet |
0
Fringe trees are finding new homes in urban landscapes
It's a little tree with big personality - fringe tree, or Chionanthus virginicus.
May 04, 2012 |
3.3 / 5 (4) |
2
Long-term monitoring shows 60 percent reduction in acidity of Delaware rain
Several decades ago, precipitation in Delaware was among the most acidic in the country. Pollutants in the air reacted with rainwater to sprinkle sulfuric, nitric and carbonic acids onto the ground below, ...
May 03, 2012 |
not rated yet |
2
Pollutant
A pollutant is a waste material that pollutes air, water or soil, and is the cause of pollution.
Three factors determine the severity of a pollutant: its chemical nature, its concentration and its persistence. Some pollutants are biodegradable and therefore will not persist in the environment in the long term. However the degradation products of some pollutants are themselves polluting such as the products DDE and DDD produced from degradation of DDT
For more information about Pollutant, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
