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IJCT Vol.16(5) [September 2009] >

Title: Spectrophotometric determination of uranium (VI) via complexation with piroxicam
Authors: Lutfullah
Khan, Farheen
Rahman, Nafisur
Azmi, Syed Najmul Hejaz
Keywords: Spectrophotometry
Uranyl nitrate hexahydrate
Issue Date: Sep-2009
Publisher: CSIR
Abstract: An optimized and validated spectrophotometric method has been described for the quantitative analysis of uranyl ion in soil samples. The method is based on the chelation of uranyl ion with piroxicam to produce a yellow complex in 1,4-dioxan–water medium at room temperature which absorbs maximally at 390 nm. Beer’s law is obeyed in the concentration range of 6.75 × 10-2 – 9.45 × 10-1 g mL-1 with apparent molar absorptivity and Sandell’s sensitivity of 4.114 × 105 L/mol/cm and 0.00066 g/cm2/ 0.001 absorbance unit, respectively. Interference due to various non-target ions was also investigated. The proposed method was successfully applied to the analysis of uranyl ion in synthetic soil samples. The validity of the proposed method was checked by applying the standard addition technique in addition to a comparison with the results obtained from other earlier reported methods.
Page(s): 437-441
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.16(5) [September 2009]

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