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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: Arch Toxicol. 2010 Dec 8;85(7):787–798. doi: 10.1007/s00204-010-0627-4

Figure 4. Concentration of Lead (Pb) in Fresh and Aged PbS-MT and PbS-DT Solutions.

Figure 4

Nanoparticle solutions that were initially opened (fresh) and left to oxidize for 5 days (aged) were digested with nitric acid, and Pb concentration was measured 18 hours later (a) with ICP -Optical Emission Spectrometer (OES). Expected Pb percent recovery concentrations were calculated for both nanoparticles for fresh and aged solutions (b). Data presented with ** designate statistically significant values (Student t-Test, **p<0.001).