Sentences with phrase «of bromine»

At the same time, you'll want to avoid all sources of bromine as much as possible, as this appears to play a large role in the rising levels of iodine deficiency.

Methyl bromide, used in agriculture, and halons, which are used to fight fires, are the principal humanmade sources of the chemical, and their use helped double the amount of bromine in the atmosphere from the mid to the late 20th century.

The average level of bromine - based fire retardants in the milk of 20 first - time mothers was 75 times the average found in recent European studies.

Over the last decade scientists have more closely looked at the amount of bromine in the stratosphere and realized it must have sources beyond the long - lived, man - made compounds.

The research by Krüger's team could help scientists estimate the amount of bromine released by today's volcanic eruptions.

• Another important feature of Arctic chemistry is the involvement of bromine gas species in sudden ozone depletion events in the lower troposphere during spring.

Much of the bromine comes from compounds still used in fumigants and fire extinguishers.

The areas with higher bromine concentrations had up to 180 percent higher photoluminescence than areas depleted of bromine ions.

The drop is larger than scientists had predicted, meaning that either natural sources of bromine also declined or that industry was responsible for a larger fraction of atmospheric bromine than experts thought.

130 Million Number of years a typical atom of bromine spends in the ocean, the longest residence time of any element.

These popcorn - sized puffs of ice crystals have long been thought the source of the bromine oxide that triggers the deposition of the mercury from the atmosphere and the depletion of ozone near the poles.

Each eruption spewed 4,000 to 600,000 tons of bromine, the team now concludes.

An excess of bromine may compromise iodine status.

Iodine deficiency is on the rise for two reasons: decreased intake of iodine, and increased intake of bromine.

To facilitate the excretion of bromine, Dr. Brownstein recommends a combination of vitamin C, unrefined salt and magnesium, including baths of Epsom salts and sea salt.

If you are exposed to a lot of bromine, you will not hold on to the iodine you need.

Drastic reductions in Arctic sea ice in the last decade may be intensifying the chemical release of bromine into the atmosphere, resulting in ground - level ozone depletion and the deposit of toxic mercury in the Arctic, according to a new NASA - led study.

Effective chlorine values combine the measured or projected abundances of chlorine - containing gases with those of brominecontaining gases in a way that properly accounts for the greater effectiveness of bromine in depleting stratospheric ozone.

Dig a hole, line it with cement or plastic, drop this battery down and cover it up — it should be in an enclosed or sealed system to prevent leakage or emission of bromine gas.

Greenpeace tried to play up the presence of bromine compounds in the laptops, even though they could not tie it directly to the brominated fire retardants they have said are of greatest concern.

But the effect on ozone, which is caused by the reduction of bromine explosions due to the sea ice removal, is particularly important.

Furthermore, future levels of bromine and chlorine depend upon natural processes removing these gases from the atmosphere as they have in the past, despite changes in atmospheric temperatures, circulation, etc..

They report in the 15 August issue of Geophysical Research Letters that the total amount of bromine - containing compounds peaked in 1998 and has since declined by 5 %.

The researchers were initially looking for chemical compounds of natural origin: they wanted to test whether the oceans around Borneo were a source of bromine and chlorine.

Although chlorine levels are falling, thanks to agreements that banned chlorofluorocarbons, levels of bromine — which is 45 times more effective at zapping ozone — are still rising, says atmospheric chemist Dale Hurst of the National Oceanic and Atmospheric Administration in Boulder, Colorado.

There's a whole subculture of folks taking large doses of iodine, both on their own and with Dr.s supervision to cleanse themselves of bromine, flourine, chlorine.

The patient is advised to avoid all sources of bromine, including fire retardant in carpet, clothing and mattresses, and bromide - treated breads, baked goods and grains.

Hence, there exists uncertainty in how the levels of bromine and chlorine will change in the future.