ION EXCHANGE PROPERTIES OF AMMONIUM SALTS OF 12 HETEROPOLYACIDS Ⅰ. CHROMATOGRAPHIC SEPARATIONS OF THE ALKALI METALS
SHEN SHIH-NIEN, ZHANG ZHU-JUN, CHENG HUEI-VEN
Acta Chimica Sinica . 1964, (1): 21 -24 .