Europium, determination Subject

Iieser et al. [628] studied the application of neutron activation analysis to the determination of trace elements in seawater. The rare earths included in this study were cerium and europium. The element concerned were adsorbed onto charcoal. Between 75% and 100% of the elements were adsorbed onto the charcoal which was then subjected to analysis by neutron activation analysis. Cerium (300 p,g/l) and europium (0.00082 pg/1) were found in North Sea water by this method. 

Meggers 1942) and that of element 61 is obtained by interpolation consequently, these are subject to some doubt. The ground states given for neodymium (Schuurmans 1946), samarium, europium and gadolinium are those spectroscopically determined (Meggers 1942) for the neutral atoms and should be considered as well established. 

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