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Extraction voltammetric determination of phosphorus (1994)

Helms, I. ; Möller, A. ; Scholz, F.

Springer

Fresenius' Zeitschrift für analytische Chemie 349 (1994), S. 575-577

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ISSN: 1618-2650

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Abstract The proposed method for the determination of phosphorus is based on the extraction of molybdophosphoric acid. A mixture of methyl-iso-butyl-ketone and cyclohexane is used as extractant. The addition of cyclohexane allows the separation from silicon. Sodium chlorate is used as oxidant and gives rise to a catalytic current. The voltammetric behaviour of molybdophosphoric acid is described, comparing the dropping mercury electrode and the glassy carbon electrode. The 3σ-detection limit is 2.3 · 10−8 mol P/l. The method was applied to water samples from the river Spree.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00323460

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