Physical and chemical properties of dust in the Pre-Aral region of Uzbekistan

Particle size distribution of the dust in DI water measured by 
a
Mastersize and 
b
Zetasizer at different times: (―) right after mixing the 
dust with DI water, (―) 90 min later, and (―) 150 min later, and 
c
kinetics of change of pH in DI water

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Environmental Science and Pollution Research
1 3
V, Co, Cr, and Cu are also present in smaller amount. The 
results are consistent with EDX and XRF measurements.
Figure 
6
 shows XRD spectra for soiling collected from 
the glass surface. One can see the peaks corresponding to 
quartz (Wang et al. 
2018
), corundum (Smrčok et al. 
2001
), 
hematite, CaO (Oftedal 
1927
), and MgO (Sasaki et al. 
1979
), 
the molecules detected in compositional analysis. Structural 
properties of the other materials observed in compositional 
analysis are not detected because either their concentration or