Sentence examples for background level of lead from inspiring English sources

The study, however, noted that there was a mean background level of lead of 0.93 ± 0.13 ppm in the salsa.

We assessed background levels of lead in each deer from shank meat, collected well away from any potential bullet contamination.

However, background levels of blood lead among Senegalese children were estimated in 2006 by Diouf et al. (2006).

In other words, there might be a background level of cellular 'mosaicism' in donor tissues that can lead to cell-line variability.

Our low background level of staining also suggests the fixation and specimen preparation steps did not induce artifacts that would lead to false-positive staining.

Review coauthor Gabriel Filippelli, chair of the Earth Sciences Department at Indiana University Purdue University, Indianapolis, believes elevated blood lead levels in inner-city children come largely from exposure to lead dust that has settled over decades, resulting in soil whose lead content, at the most contaminated spots, can reach 100 times the background level of about 50 ppm.

The fall-out reaching Scandinavia was only twice the natural background level of radiation.

But he does expect government to provide him with a background level of order.

This can be the background level of translational selection.

Lee Mauldin, a researcher in the University of Colorado Boulder's Department of Atmospheric and Oceanic Sciences, found both in the air above Finland's boreal forest, where background levels of sulfuric acid (H2SO4) led to the discovery of a new atmospheric oxidant.

Another important factor in identification of candidates for further development as blood-based biomarkers for cancer diagnosis is the potential for background levels of methylated sequences in plasma of healthy subjects to lead to false positive tests [ 19].