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. Author manuscript; available in PMC: 2014 Mar 18.
Published in final edited form as: Chemosphere. 2013 Jul 26;93(6):1216–1221. doi: 10.1016/j.chemosphere.2013.06.082

Fig. 3.

Fig. 3

Evolution of ISR over time. The ISR over time of all the coal reference materials at the highest particle loading (0.002 m2 mL−1) is represented.