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|Title:||Separation of Co(II), Ni(II), Cu(II) and Pd(II) with 4-benzoyl-3-methyl- 1-phenylpyrazol-5-one using tetradecyldimethylbenzylammonium chloride-naphthalene as an adsorbent|
|Abstract:||A method has been established for the determination of Co(II), Ni(II), Cu(II) and Pd(II) after preconcentration with 4-benzoyl-3-methyl-1-phenylpyrazol- 5-one (BMPP) supported on tetradecyldimethylbenzyl ammonium chloride (TDBA)-microcrystalline naphthalene using a simple funnel-tipped glass tube. The metals form a water insoluble metal-BMPP complex with λmax at 360 nm for Co(ll), 480 nm for Ni(ll), 430 nm for Cu(II) and 380 nm for Pd(II)-complexes. The molar absorptivities and Sandell's sensitivities for all these complexes are found to be in the range 1.09 x 104-1.87 x 104 l mol-1 cm-1 and 0.0046- 0.0058 µg cm- 2 respectively. The proposed method has been tested for the determination of nickel(ll) and copper(II) in standard alloys and vehicle exhaust particulates.|
|Appears in Collections:||IJC-A Vol.35A(11) [November 1996]|
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