Introduction: A Brief History of f Element Separations

摘要: In 1787, C. A. Arrhenius found a black mineral near Ytterby, north of Stockholm. He named it yttria. Subsequent studies yttria led to the isolation and identification yttrium (1794). By 1907 all lanthanides except element 61 had been discovered. The final lanthanide was produced in nuclear fission identified 1947. A major problem over intervening 160 years extreme difficulty separating these elements almost identical chemical properties. However, development separation procedures based on cation exchange resins using aminopolycarboxylate eluent solutions resulted macro quantities high purity lanthanides. subsequent methods 4f has continued be an exciting successful area science since 1950’s.