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Determination of Nickel in Biological Materials and Sea Water by Neutron Activation and Liquid Scintillation Counting of Nickel-65 by H. Bem; Holzbecher; D.E. Ryan is a Chemistry article available to read on EtoBox.

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A method has been developed for the determination of submicrogram quantities of nickel in biological materials and sea water. Nickel is preconcentrated by coprecipitation with a-benzildioxime followed by neutron activation and liquid scintillation counting of nickel-65. Copper, cobalt, and manganese partially coprecipitate and trace amounts of chlorine and bromine are adsorbed onto the surface of the solid phase; these interferences are removed by washing the chloroform extract of dissolved precipitate with an aqueous solution of citric acid containing inactive carriers of bromide, chloride, copper( manganese(I1) and sodium ions. Nickel is finally stripped into the aqueous phase with 2 M hydrochloric acid. A new scintillator is described which can tolerate large volumes of water. The detection limit is 5 ng. Precision and accuracy are evaluated by using four standard reference materials.

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Author

H. Bem; Holzbecher; D.E. Ryan

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0003-2670)

Published

1983

Language

EN

Field

Chemistry (Physical Sciences)