Sentences with phrase «levels of ammonium»

Researchers found high levels of ammonium, selenium, lead and other toxic contaminants as well as high salts in the brine - laden wastewater, which primarily comes from hydraulically fractured oil wells in the Bakken region of western North Dakota.

Also, at the original level of ammonium hydroxide used, LBT had a distinct (and disagreeable) taste, and my guess here is that they kept the amount of it used per beef patty down to a level meant to minimize that taste.

Not exact matches

Duke University scientists have discovered high levels of two potentially hazardous contaminants, ammonium and iodide, in wastewater being discharged or spilled into streams and rivers from oil and gas operations in Pennsylvania and West Virginia.

The scientists detected ammonium levels of up to 100 milligrams per liter in oil and gas effluents they collected at the wastewater discharge sites.

Researchers in Hawaii found that guppies released in the 1920s drove down native fish populations, perhaps by competing with them for food and living space, and had likely changed the cycle of nutrients in water: Guppy - rich areas showed increased levels of dissolved nitrogen — from ammonium in fish urine and gill excretions — which, in turn, stimulated algae growth.

Plants fertilized with ammonium grew almost twice as much as the plants fertilized with nitrate, and their darker green leaves attested to higher levels of protein, the team reports in the 5 February issue of the Proceedings of the National Academy of Sciences.

Now a study shows that the proteins transport ammonium, a toxic by - product of energy metabolism, and possibly keep the blood's pH level balanced.

The human liver has a limited capacity to metabolize proteins, so excessive protein intake (> 35 % of total calorie intake) may result in increased blood levels of amino acids (hyperaminoacidemia), ammonium (hyperammonemia) and insulin (hyperinsulinemia), and even death [46].