Sentences with phrase «pah concentrations»

Standardized values (Z scores) of (A) visible reflectance spectroscopy (VRS) chlorophyll a inferences from the five lakes proximate to major oil sands operations as indicators of lake primary production; (B) total PAH concentrations and (C) total DBT concentrations from all six study sites.

Sites with higher PAH concentrations before the storm had lower concentrations afterward, and the opposite was true for sites with lower pre-hurricane PAH concentrations.

Not exact matches

In a new study published in the journal PLOS One, Jennifer Horney, PhD, associate professor and head of the Department of Epidemiology and Biostatistics in the Texas A&M School of Public Health, along with researchers from Texas A&M and the Pacific Northwest National Lab, examined concentrations of polycyclic aromatic hydrocarbons (PAHs) before and after Hurricane Harvey in the Houston environmental justice neighborhood of Manchester.

Together with Professor Philipp Mayer, who is presently employed at the Technical University of Denmark (DTU), she has developed a new test setup that allows exposing the ciliates to a concentration gradient while concurrently enabling their observation through a microscope in real time and measuring the transport of PAH by means of chromatographic methods.

A study of 8 different brands found «very high concentrations» of carcinogenic PAHs in all of them.