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Rapid method for the determination of copper(II) and lead(II) in tap water using a portable potentiometric stripping analyser

✍ Scribed by D. Jagner; E. Sahlin; B. Axelsson; R. Ratana-Ohpas

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 504 KB
Volume: 278
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(93)85105-s

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✦ Synopsis

Tap water samples of 400 ~1 were added to 280 ~1 of matrix-modifying solution consisting of hydrochloric acid, calcimn chloride, mercu&II), ethanol, Triton X-100 and bismuth(IIIJ as internal standard and contained in disposable 2-ml Eppendorff sample tubes. The mixture was analysed for copper(B) and lead(B) using a.commercial computerized potentiometric stripping analyser in combination with a laboratory-made electrode system and rotating sample holder. Copper(B) in the range 0.10-5 mg 1-l was determined in less than 1 min and lead(B) in the range l-50 pg 1-t in 3 min, the precisions being ca. 15%.

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