Extraction and Determination of Nickel (Ii) Via Cloud Point Method

Abstract

Spectrophotometric study for ion pair complex of Ni(II) ion extracted into cloud point extraction larger appear wave length of maximum absorbance was λ=660 nm, for extracted Ni(II) ion as ion pair association ,used laboratory synthesized azo derivative 2-(4-hydroxy phenyl azo)-4-Benzen naphthol(HPAB).The study about Determination the optimum condition for extraction and determination was pH =10 in presence 100 µg Ni(II) in 10 ml aqueous solution ,0.6 mL of Triton x-114 and temperature of heating was 70 c° at heating time equal to 30 minute, stoichiometry shows the ion pair complex extracted was 1:1 (Ni-HPAB) +2;2Cl_, in addition to electrolyte effect study as well as spectrophotometric determination of Ni(II) in different samples .

Preconcentration and Spectroscopic estimation of Zn (II) by sensitive Cloud Point Extraction Technique using Imidazole Azo Reagent

“…As for the FT-IR signals, the spectrum showed several bands: (A band at 3421.72 υ -1 belongs to the (N-H group, a band at 1680 υ -1 belongs to the (C=O group, and a band at 1597.06 υ -1 belongs to the (C=N group, and a band at 1575.84 υ -1 belongs to a group (N=N) show in Fig. 3 ) until formation cloud point layer, then separated this layer and dissolved in 5ml ethanol and measured the absorbance of alcoholic solution against blank prepared at the same manner in absence Zn 2+ ion at wave length of maximum absorbance for ion pair association complex extracted to CPL (, λ max ) 500 nm, on well on the aqueous phase treated according to Dithizone spectrophotometric method [14] and return to calibration care to determine the remainder quantity of Zn(II) ion in aqueous solution at extracted the subtraction this quantity from the original quantity of Zn(II)ion which is already in the aqueous solution to determine the transfer quantity of Zn 2+ ion to the CPL in order to formation an association complex afterward calculated distribution ratio [15,16,17,18] .…”

“…The 10 m series aqueous solutions contain containing 100 μg of Zn(II) at pH = 8 with 0.5 mL Triton X-114 and 3x10 -4 4-CMePAI heating solutions at temperature gradients until the cloud point layer CPL is completed and the optimum temperature is observed at which the best separation procedure occurs and as then its absorption was measured at the wavelength of the greatest absorption, λ max =500 nm. They need a higher temperature, and this may lead to a disturbance in the equilibrium state because it is the optimum temperature (80 C The result is illustrated in the figure (11) [15,16,[22][23][24] . The extraction constant is then calculated using the equation below [16]…”

“…They need a higher temperature, and this may lead to a disturbance in the equilibrium state because it is the optimum temperature (80 C The result is illustrated in the figure (11) [15,16,[22][23][24] . The extraction constant is then calculated using the equation below [16]…”

Aspirin in Food Samples for Separation and Micro Determination of Copper(II) Using Cloud Point Extraction/Solvation Method

“…This indicates the consumption of some salting out levels of KNO 3 and aspirin. Decreases of the concentration of KNO 3 and aspirin down the necessary for the formation of solvation species of Cu(II) and declines the extraction efficiency of Cu(II) [32].…”