| Extractive Spectrophotometric Determination of Cu(II) with Phosphoryl Derivative of p-tert-butylthiacalix(4)arene |
| R.S. LOKHANDE*, MANOJ R. SHARMA and A.B. CHOUDHARY |
Department of Chemistry, University of Mumbai, Vidyanagari
Santacruz (E) Mumbai-400 098, India
E-mail: lokhanders@yahoo.com |
| Abstract
A spectrophotometric method has been developed for the determination of Cu(II) using a phosphoryl derivative of p-tert-butylthiacalix(4)arene as an extractive reagent. The reagent forms a coloured complex, which has been quantitatively extracted in toluene at pH 8.3. The method obeys Beer’s law over a range from 1 to 19 ppm. The molar absorptivity and Sandell sensitivity were 1.046 × 103 L mol-1 cm-1 and 1.6 × 10-5 μg cm-2, respectively. The proposed method is very sensitive and selective. The method has been successfully applied to synthetic and commercial samples. |
| Keywords
Copper, Spectrophotometric determination, Toluene, p-tert-butylthiacalix(4)arene. |
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