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K. V. Oskolok, O. V. Monogarova, N. V. Alov
TXRF determination of cobalt and mercury in
water with preconcentration on polyurethane foam sorbent
Abstract
Technique of X-ray fluorescence
determination of cobalt and mercury in water with static and dynamic
preconcentration in the form of thiocyanate and iodide complexes on
polyurethane foam sorbents on the basis of ethers was proposed. The possibility
of measurement of total-reflection X-ray fluorescence signal of analyts in
eluate and sorbent phase was studied. The proposed approach allows increasing
sensitivity of cobalt and mercury determination in water up to 2–4 order in
comparison with classic sorption – X-ray fluorescence techniques.
Key words: total-reflection X-ray
fluorescence analysis, polyurethane foam sorbents, thiocyanate complexes of
cobalt, iodide complexes of mercury.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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