Visual determination of lead(II) by inhibition of alkaline phosphatase immobilized on polyurethane foamстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The inhibitory effect of lead(II) towards the activity of alkaline phosphatase immobilized in N-phthalylchitosan on polyurethane foam in p-nitrophenylphosphate hydrolysis has been used for developing a visual test procedure for the determination of 0.05-10000ngml-1 Pb(II). The 3σ detection limit is 0.02ngml-1. Alkaline phosphatase immobilized on polyurethane foam keeps the catalytic activity for at least 1 year. The developed procedure was applied successfully to the determination of lead (14-91mgkg-1) in different types of soils. Copyright (C) 2000 Elsevier Science B.V.