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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. 3.

Fig. 3

Calibration curve of Cr(VI) in the range 0–5 μg l−1 after extraction with TBAB and complexation with DPC in water, and in a pool of EBC; the slopes of the curves and Pearson’s r-value are also shown. The intercept represents the value of the blank in the absence of standard Cr(VI).