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2009-02-06 07:41:08

Proposed new international 'equation of state' employs absolute over practical salinity to redefine thermodynamic equation of seawater after 30 years Seawater is a complex, dynamic mixture of dissolved minerals, salts, and organic materials that despite scientists best efforts, presents difficulties in measuring its potential to contain and disperse energy. Like the water itself, the calculations scientists employ to measure seawater are fluid, undergoing significant revisions and...

2008-12-16 07:00:00

MILFORD, Mass., Dec. 16 /PRNewswire-FirstCall/ -- With the analytical industry experiencing its most severe acetonitrile shortage in history, pharmaceutical, food, environmental and chemical industries are all searching for solutions to maintain their mission critical laboratory productivity. Waters Corporation (NYSE: WAT), working with its key customers, today estimated that replacing traditional high performance LC (HPLC) with Waters(R) ACQUITY(R) UltraPerformance LC(R) (UPLC(R))...

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2008-11-25 08:15:00

Researchers now believe the ocean is growing more acidic faster than once thought, thanks to increasing levels of atmospheric carbon dioxide. University of Chicago scientists documented the phenomena in a paper published online in the Proceedings of the National Academy of Sciences. "Of the variables the study examined that are linked to changes in ocean acidity, only atmospheric carbon dioxide exhibited a corresponding steady change," said J. Timothy Wootton, the lead author of the study...

2008-09-23 03:00:22

By Jessen, Andrea Randall, Andrew; Reinhart, Debra; Daly, Luke ABSTRACT: This study examined whether ferrate could meet the international standards for successful ballast water treatment, including final concentrations of less than 1 CFU/mL of Enterococci, less than 2.5 CFU/mL of Escherichia coli, and less than 1 CFU/100 mL of Vibrio cholerae. Pure cultures of E. coli, Klebsiella pneumoniae, and V. cholerae, and a mixed culture of Enterococcus faecium and E. faecilis were grown in saline...

2008-08-10 00:00:12

Part of a river which has turned bright green should return to normal over the weekend. The Environment Agency is investigating after the River Trent, in Stone, changed colour late on Wednesday. It is believed a quantity of water-based dye got into the river, possibly upstream in the Stoke-on-Trent or Newcastle area. Tests found the substance to be harmless. An Environment Agency spokesman said: "We have measured dissolved oxygen, pneumonia and PH levels of the water and found nothing...

2008-08-09 03:00:24

By Lapointe, Mathieu MacKenzie, Tyler D B; Morse, David The oceans globally constitute an important sink for carbon dioxide (CO2) due to phytoplankton photosynthesis. However, the marine environment imposes serious restraints to carbon fixation. First, the equilibrium between CO2 and bicarbonate (HCO^sub 3^-) is pH dependent, and, in normal, slightly alkaline seawater, [CO2] is typically low (approximately 10 mM ). Second, the rate of CO2 diffusion in seawater is slow, so, for any cells...

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2008-07-31 15:16:26

Decreasing pH the biggest threat to marine animal life for thousands of years By absorbing carbon dioxide from the atmosphere, and from the human use of fossil fuels, the world's seas function as a giant buffer for the Earth's life support system. The chemical balance of the sea has long been regarded as immovable. Today, researchers know that the pH of the sea's surface water has gone down by 0.1, or 25 percent, just since the beginning of industrialization just over a century ago. Jon...

2008-07-29 12:00:49

By Niki Sullivan, The News Tribune, Tacoma, Wash. Jul. 29--A faulty batch of chemicals might have caused the pH level of Wapato Lake to plummet during an algae treatment Friday, suffocating large numbers of fish, according to the company hired to monitor water quality. Rob Plotnikoff, a senior scientist with Seattle water monitoring company Tetra Tech, told the Metro Parks board of commissioners Monday that the lake is safe now, but they'll have to wait for more information -- including...

2008-07-11 00:00:00

By STUART ABEL Herald Reporter Owners of ornamental fish in Plymouth have been put on alert after a change in the tap water was blamed for the death of several valuable carp. One man lost five carp in his pond within two weeks - and he is claiming that a rise in the pH level of the water is the cause. Ponds are mostly refilled, from the tap but if the water becomes too alkaline or acidic fish can be harmed. Now the owner of a tropical fish store has warned owners to test the pH levels...

2008-06-25 12:03:01

U.S. environmental scientists say they have created one of the most comprehensive databases on the effects of acid rainfall. Prior to enactment of the U.S. Clean Air Act, unhindered industrial emissions were released into the air across the nation, with many of the chemicals falling back to Earth in the form of acid rain. Although scientists have long known acid rain can severely decrease the diversity of plant and animal communities in fresh water lakes and ponds, little is known about...


Word of the Day
cruet
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.
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