Determination of trace level vanadium in marine biological samples by chemical neutron activation analysis

Date

1979

Authors

Blotcky, A.J.
Falcone, C.
Medina, V.A.
Rack, E.P.
Hobson, D.W.

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

A preirradiation chemistry neutron activation analysis procedure employing cation-exchange chromatography in described for the determination of trace level V in blue crabs (Callinectes sapidus), white shrimp (Penaeus setiferus), and oysters (Crassostrea virginica). The procedure, utilizing a low-power nuclear reactor (.approx. 1 times 1011 n/cm2-s), consists of wet digestion of the sample, cation-exchange chromtography employing HNO3 wash to remove the major contaminants (Na and Cl ions) which can be radioactivated, ammonium hydroxide elution to remove V from the resin and neutron irradiation and radioassay for 52V. The limit of detection of the method is 30 ppb. The determinations of the V content on NBS (National Bureau of Standards) Standard Reference Material 1571 Orchard Leaves resulted in a value of 0.60 +- 0.02 ppm. Determinations of the V content in shrimp, crab, and oyster (SD .ltoreq. 5%) from 4 sites off and near Galveston Island, Texas, USA, showed that the V content is greater in samples from the industrialized areas than from a nonindustrialized section.

Description

p. 178-182.

Keywords

chemical analysis, trace metals, vanadium, chemical pollution, Callinectes sapidus, Penaeus setiferus, Crassostrea virginica, blue crab, white shrimp, american oyster

Citation