A container adsorption study of cadmium using109Cd spiking and liquid scintillation counting
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109Cd may be used as a radiolabel in tracer studies of Cd(II) because of the ease and efficiency with which it may be counted by liquid scintillation counting. It has been found that ppm solutions of Cd2+, spiked with109Cd, may be stored for at least 200 d, in either amber glass or polypropylene containers, without measurable container adsorption, at pH's of 5 or less. At pH's above 5, there is some evidence of container adsorption, particularly in the case of polypropylene containers. Amber glass is recommended if pH's between 5 and 7 must be used for storage.
KeywordsPhysical Chemistry Cadmium Inorganic Chemistry Polypropylene Liquid Scintillation
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