3.3. Dynamic Range and Detection LimitsThe linear ranges (r¼0.999) for the simultaneous determi-nation of the four metals in the highly saline samples usingMFE under optimized conditions and a deposition time of60 s were 0 – 400mgL1for Cd(II), Pb(II), Cu(II), and 0 –500mgL1for Tl(I) in seawater/hydrothermal fluid samples,0 – 300mgL1for Cd(II), Pb(II), Cu(II), and 0 – 400mgL1for Tl(I) in dialysis concentrate samples. The linear range(r¼0.999) for the simultaneous determination of themetalsin highly saline samples by ASV using BiFE underoptimized conditions and a deposition time of 60 s wasbetween 0 and 200mgL1for Cd(II), Pb(II), and Tl(I) inseawater, hydrothermal fluid and dialysis concentratesamples.
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