In this work, a new method based on

In this work, a new method based on dispersive liquid–liquid microextraction (DLLME) preconcentration
using tetrachloromethane (CCl
) as extraction solvent was proposed for the spectrophotometric determination
of cadmium and copper in water and food samples. The influence factors relevant to DLLME, such as
type and volume of extractant and disperser solvent, concentration of chelating reagents, pH, salt effect, were
optimized. Under the optimal conditions, the limits of detection for cadmium and copper were 0.01 ng/L and
0.5 μg/L, with enhancement factors (EFs) of 3458 and 10, respectively. The tremendous contrast of EFs could
come from the different maximum absorption wavelength caused by the different extraction acidity
compared with some conventional works and the enhancement effect of acetone used as dilution solvent
during the spectrophotometric determination. The proposed method was applied to the determination of
water and food samples with satisfactory analytical results. The proposed method was simple, rapid, costefficient
and sensitive, especially for the detection of cadmium

ผลลัพธ์ (อังกฤษ) 2:

Work in this, a method based on dispersive New Liquid-Liquid microextraction (DLLME) Preconcentration
using Tetrachloromethane (CCl
) as Solvent extraction was for the Proposed Spectrophotometric determination
of cadmium and Copper in Water and Food samples. FL Uence in the factors relevant to DLLME, such as
Type and volume of Extractant and Solvent disperser, concentration of chelating Reagents, pH, Salt Effect, were
Optimized. Optimal under the conditions, the limits for cadmium and Detection of Copper were .01 NG / L and
0.5 g / L, with enhancement factors (Efs) of 3458 and 10, respectively. The tremendous contrast of Efs could
Come from the different maximum absorption wavelength caused by the different extraction acidity
compared with conventional Some works and the enhancement Effect of Acetone used as Solvent dilution
during the Spectrophotometric determination. Proposed method was the determination of the Applied to
Water and Food Satisfactory samples with analytical results. Proposed method was the Simple, Rapid, Costef fi cient
and sensitive, especially for the Detection of cadmium.