Abstract
A method was developed to measure simultaneously the concentration of the elements manganese, copper, arsenic, cadmium, antimony, and mercury in glacial, ice. Samples and comparators were irradiated for 60 min in a thermal flux of 1.8·10 12 n cm −2 −1. The six elements were separated from the irradiated samples sequentially; mercury, arsenic, and cadmium received additional radiochemical purification. The γ-rays of the 56Mn, 64Cu, 76As, 122Sb, and 197Hg and the β-rays of the 115Cd- 115In were measured. All the elements were detectable at the submanogram level. Comparison of the detection limits with the concentration of elements in the samples indicated that, even with the moderate neutron flux available and for ice from a relatively uncontaminated environment, the methods used were sensitive enough for adequate characterization.
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