TITLE

Spectrophotometric Determination of Trace amounts of Molybdenum(VI) Using 4-Hydroxybenzaldehydethiosemicarbazone

AUTHOR(S)
Satheesh, K. P.; Ravichandran, S.; Rao, V. Suryanarayana; Devanna, N.; Chandrasekhar, K. B.
PUB. DATE
October 2011
SOURCE
International Journal of ChemTech Research;Oct-Dec2011, Vol. 3 Issue 4, p1740
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The reagent 4-hydroxybenzaldehyde thiosemicarbazone (4-HBTS) has been used for the determination of Mo(VI) by spectrophotometric method. The reagent 4-HBTS gives green colour with Mo(VI) solution of weak acidic medium and the maximum absorbance was observed at 365nm, in acidic buffer pH 6.0. The molar absorptivity and Sandell's sensitivity of Mo(VI)- 4-HBTS complex are 1.25 x 104 L mol-1 cm-1 and 0.00109 μg/cm² respectively. The stability constant of 1:1 Mo(VI)-4-HBTS complex is 2.76x105. The effect of various diverse ions is also studied. The method was successfully applied for the determination of molybdenum in alloys containing molybdenum. The influence of interferences on the proposed method was studied and presented. The method was successfully applied for the determination of molybdenum in different alloy samples. A detailed report on comparison of spectrophotometric methods for the determination of Mo (VI) using various organic reagents also summarized.
ACCESSION #
71341404

 

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