Sentence examples for had concentrations of from inspiring English sources
Effluent from one treatment plant had concentrations of antibiotics higher than levels we try to achieve in the bloodstream of patients," says Davies.
In a study published in 2000 and cited in the findings, vegan women had concentrations of I.G.F. that were 13percentt lower than those in women who regularly consumed dairy products.
But on average, fixtures in copper-equipped rooms had concentrations of bacteria about 98percentt lower than in rooms furnished with traditional equipment, whether the rooms were occupied or not.
This research, which was published in scientific literature and also picked up by the popular science magazine New Scientist in August 1986, found that former workers had concentrations of plutonium in their bodies hundreds or thousands of times higher than in the general population - a conclusion with great significance for public health.
Surface soils had concentrations of plutonium-239 that were almost 380 times the background concentration (the amount of plutonium deposited by global fallout from nuclear testing), posing a significant inhalation hazard.
One-quarter to one-half of sampling sites had concentrations of PAHs, Cu, Pb, or Zn above the probable effects concentration, a set of sediment quality guidelines for adverse effects to aquatic biota, and sediments were predicted to be toxic, on average, when CIT land use exceeded about 10%.
Of 80 groundwater samples collected from the pilot-PRB, 11 samples exceeded 0.50 mg As L− 1; 62 samples had concentrations of arsenic at or below 0.50 mg L− 1; and, 24 samples were at or below the maximum contaminant level (MCL) for arsenic of 0.01 mg L− 1.
Analysis of most elements having concentrations of more than five parts per million is possible.
At no point in the preindustrial record have concentrations of carbon dioxide in the air risen above 300 parts per million (ppm).
