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. Author manuscript; available in PMC: 2010 Jun 11.
Published in final edited form as: Anal Chem. 2007 Jan 15;79(2):632–638. doi: 10.1021/ac061467g

Table 1.

Determination of Pb2+ in environmental water samples

water source backside calibration standard addition
Budapest tap (1.3–1.6) × 10−8 M (2.00 ± 0.20) × 10−8 M
Warsaw tap (1.3–1.6) × 10−8 M (1.86 ± 0.04) × 10−8 M
Zurich tap (1.6–2.0) × 10−8 M (1.70 ± 0.08) × 10−8 M
Zurich, Sihl river (3.2–4.0) × 10−9 M (4.30 ± 0.50) × 10−9 M