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. Author manuscript; available in PMC: 2006 Oct 17.
Published in final edited form as: Anal Chim Acta. 2006 Mar 15;562(2):229–235. doi: 10.1016/j.aca.2006.01.065

Fig. 4.

Fig. 4

(A) Cr and Cr(VI) levels at the end of the Tuesday work shift (t0) and at the beginning of the Wednesday work shift (t1), and their geometric means (top of the graph). (B) The fraction of Cr(VI) in the environmental samples (AIR) at t0 and t1, and their geometric means (top of the graph). *p < 0.05; **p < 0.05 with a paired Student’s t-test (A) and repeated measures ANOVA followed by Tukey’s post hoc tests (B).