Sentences with phrase «with bromine»

During the same time period, the baking industry replaced iodine - based anti-caking agents with bromine - based agents.9

During this same time period, the baking industry replaced iodine - based anti-caking agents with bromine - based agents.

But he urges continued monitoring of other harmful and long - lived compounds still in use, including halons with bromine that are present in fire extinguishers.

«We take a molecule of the natural gas constituent methane (CH4) and replace one of its hydrogen atoms with a bromine atom to form methyl bromide (CH3Br),» explains Pérez - Ramírez.

Each unit of cellulose has three hydroxyl groups, which are chemically modified with a bromine atom.

The structure is stable at room temperature and was achieved by exchanging chlorine with bromine atoms.

Not exact matches

Penta in foam was replaced with newer poorly studied bromine - containing fire retardants.

The researchers instead attached a single bromine atom to fatty acids, a process that required no complicated reaction steps, and treated cells with these modified fatty acids.

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

Five minutes on the velvet buff, he says, then five minutes on the buckskin buff, repeat for half an hour, then another five minutes with iodine and bromine «sensitizing» boxes before three daguerreotype plates are camera - ready.

The BGSU team showed that following ultraviolet excitation of geminal tribromides, including bromoform, what looks like simple fission of a carbon - bromine bond at first look is in fact isomerization (the process by which one molecule is transformed into another molecule with exactly the same atoms but in a different arrangement, and with different chemical properties) at fairly large distances via roaming of the molecular fragments.

The researchers have determined the structure of the intermediate formed when the hydrocarbon ethene (also called ethylene) reacts with halogens such as chlorine and bromine.

Primus Power, based in Hayward, California, has designed a zinc - bromine flow battery that does away with the membrane in favour of a porous metal electrode onto which zinc is plated when the battery discharges.

Many are lead halide perovskites, which combine a lead ion and three ions of iodine or a related element, such as bromine, with a third type of ion (usually something like methylammonium).

The probe also detected concentrations of chlorine and bromine in the rocks that are consistent with rocks formed by evaporation on Earth and discovered striking «blueberries,» concretions of hematite, a water - related mineral.

In addition to providing the air we breathe and the weather we experience, the troposphere is laced with a compound called the hydroxyl radical — abbreviated OH — which bonds to pollutants like bromines and droplets of sulfates called aerosols.

The work, which was partially sponsored by the Office of Naval Research through a program managed by Dr. Chagaan Baatar, studied lead halide perovskites with three different compositions, including chlorine, bromine, and iodine.

Meanwhile, Bromine, a chemical prevalent in foods, plastics, and home goods, can compete with Iodine in the thyroid to disrupt thyroid function.

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.

-- Avoiding chlorine, fluoride (toothpastes with fluoride, etc.), and bromine as they also contribute to autoimmune diseases.

Bromide (compound that includes bromine) can get into our body with pesticides, soft drinks, breads or other baked goods, fluoridated water, plastic containers, medications, etc..

-- Avoiding chlorine, fluoride (toothpastes with fluoride, etc.), and bromine as they also contribute to LGS, IBS and autoimmune diseases such as IBD.

BVO is a synthetic chemical, created by binding vegetable oil (likely GMO) with atoms of the element bromine.

-- Avoiding chlorine, fluoride (toothpastes with fluoride, etc.), and bromine as they also contribute to thyroid dysfunction, and since they are halides like iodine, they compete for iodine receptors.

Having excess bromine may interfere with the benefits of iodine.

At 12.5 mg / day, it can take a year or more to become replete with iodine in all tissues and to fully drive out other halogens, such as bromine, from the body.

Chemicals of primary concern include: bromine (associated with brominated flame retardants); chlorine (indicating the presence of polyvinyl chloride, or PVC and phthalates); lead; and heavy metals.

To even stand a chance at surviving their freshmen year, the trio must join forces as they navigate a bullying culture dominated by administrators like the once popular Ms. Bromine, their embittered guidance counselor, and Father Mercedes, the parish priest who plans to scapegoat the students as he makes off with church finances.

Definitively abandons working on platinum / palladium paper in favour of using paper with a neutral silver bromine gelatin.

... This brings up the nightmarish thought that if the chemical industry had developed organobromine compounds instead of the CFCs — or alternatively, if chlorine chemistry would have run more like that of bromine — then without any preparedness, we would have been faced with a catastrophic ozone hole everywhere and at all seasons during the 1970s, probably before the atmospheric chemists had developed the necessary knowledge to identify the problem and the appropriate techniques for the necessary critical measurements.

Every year, during the Southern Hemisphere spring, a very strong depletion of the ozone layer takes place over the Antarctic region, caused by human - induced chlorine and bromine compounds in combination with the specific meteorological conditions of that region.

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.

The present scope includes accurately monitoring column ozone with Dobson spectrophotometers globally, monitoring the ozone profile at key sites, monitoring all relevant chlorine - and bromine - containing compounds globally, improving and developing new instrumentation, conducting laboratory studies of newly proposed chemicals, and using statistical models to test the observations for signs of ozone layer recovery.

Moreover, there are a number of entirely human - made greenhouse gases in the atmosphere, such as the halocarbons and other chlorine - and bromine - containing substances, dealt with under the Montreal Protocol.

``... the nightmarish thought that if the chemical industry had developed organobromine compounds instead of the CFCs — or alternatively, if chlorine chemistry would have run more like that of bromine — then without any preparedness, we would have been faced with a catastrophic ozone hole everywhere and at all seasons during the 1970s, probably before the atmospheric chemists had developed the necessary knowledge to identify the problem and the appropriate techniques for the necessary critical measurements.

As Brad Plumer notes, the main reason they are doing this is because there is bromine and chlorine in the water, which react with sunlight to make bromate, a suspected carcinogen.