Fig. 4
From: Pro-inflammatory effects of inhaled Great Salt Lake dust particles
Characteristics of GSL sediment and qPM2.5. Electron micrographs (5,000x) of (a) unfractionated GSL sediment and (b) GSLD qPM2.5. (c) Percentage of particle size fractions of GSLD by mass from resuspension of GSL sediments in the laboratory. Data points represent the stages of the Andersen cascade impactor, where the x-value of 15 represents the fraction present in the pre-separation stage. (d) Elemental composition of GSLD qPM2.5 using ICP-MS. Major constituents (> 1%) are represented as a pie chart with those < 1% and 0.1% listed in rank order below the pie chart