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- W2022759324 abstract "A polarographic method is described for determining down to 0.01% lead and tin in iron and steel, using citric acid as supporting electrolyte. The sample is dissolved under purified nitrogen. Two curves are recorded for each sample solution: the first shows the sum of lead(II) and tin(II), and the second, after oxidation of tin(II) with a solution of iodine, gives a wave for lead only. Une méthode polarographique est décrite pour le dosage du plomb et de l'étain (→ 0.01%) dans le fer et l'acier; on utilise l'acide citrique comme électrolyte de base. L'échantillon à analyser est dissous dans une atmosphère d'azote. Deux courbes doivent être enregistrées pour chaque échantillon: on obtient ainsi d'une part la somme plomb(II) et étain(II), d'autre part le plomb seul, l'étain(II) ayant été oxydé par l'iode. Es wird eine polarographische Methode beschrieben, die die Bestimmung von Blei und Zinn in Eisen und Stahl bis zu 0.01% gcstattet. Die Probe wird unter reinem Stickstoff gelöst. Für jede Probelösung werden 2 Kurven aufgezeichnet, die erste zeigt die Summe von Blei(II) und Zinn(II), während die zweite nach Oxydation von Zinn(II) mit Jod nur die Stufe für Blei wiedergibt." @default.
- W2022759324 created "2016-06-24" @default.
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- W2022759324 date "1964-01-01" @default.
- W2022759324 modified "2023-09-25" @default.
- W2022759324 title "Polarographic determination of lead and tin in steels" @default.
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- W2022759324 doi "https://doi.org/10.1016/s0003-2670(00)88685-7" @default.
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