Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 375, Issue 5, Pages 698-702Publisher
SPRINGER-VERLAG BERLIN
DOI: 10.1007/s00216-003-1762-z
Keywords
uranyl preconcentration; octadecyl silica disk; piroxicam; spectrophotometric determination
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A method for the extraction and determination of uranyl ion in natural waters using octadecyl bonded silica membrane disks modified with piroxicam and spectrophotometry with arsenazo(III) is proposed. The perconcentration step was studied with regard to experimental parameters such as amount of extractant, type and amount of eluent, pH, flow rates and tolerance limit of diverse ions on the recovery of uranyl ion. The limit of detection of the proposed method is 0.4 mug L-1 of uranyl. The method was applied to the recovery of uranyl from different water samples.
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