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Acta Chimica Sinica ›› 1958, Vol. 24 ›› Issue (1): 25-29. Previous Articles Next Articles
高小霞1, 莊文德2
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KAO SHEAU-SHYA1, CHUANG WEN-THE2
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1.The "dead-stop" method of Foulk and Bawden has been found very convenient for the determination of the end-point in the precipitation ti七rations with ferrocyanide, if an applied voltage of about 50 millivolts is used.In 1M hydrochloric acid solution, zinc can be precipitated quantitatively by ferrocyanide as Zn3K2[Fe(CN)6]2, while cadmium remains in solution.After adding solid ammonium sulfate(about 9 grams in 60 ml.of solution)cadmium can be quantitatively precipitated as Cd5(NH4)6[Fe(CN)6]4.
KAO SHEAU-SHYA, CHUANG WEN-THE. SIMULTANEOUS TITRATIONS OF ZINC AND CADMIUM WITH THE “DEAD-STOP END-POINT”[J]. Acta Chimica Sinica, 1958, 24(1): 25-29.
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