extraction and preconcentration of pb(ii) from water and soil samples using modified activated carbon
Authors
abstract
in this work, a new extractant was prepared by immobilizing ligand 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol, (5-br-padap), on the activated carbon and applied to extraction of pb(ii) prior to determination by flame atomic absorption spectrometry. it was confirmed by ft- ir analysis. the metal ion was retained on the 0.05 g of the sorbent in the ph range 6-8, and then eluted with 5 ml of 0.5 mol l-1 nitric acid. seven replicate determinations of a 1.0 µg ml-1 of lead solution in the final solution gave relative standard deviation of 3.3%. the maximum equilibrium capacity of the new sorbent from langmuir model was 18.2 mg g-1. the linearity was maintained in the concentration range of 0.1-10.0 ng ml-1 for the concentrated solution. the limit of detection based on three times the standard deviation of the blank ( 3σbl/m), was found to be 0.83 ng ml-1 in original solution. common coexisting ions did not interfere with the separation and determination of lead. the prepared sorbent was applied to the preconcentration of pb(ii) in water and soil samples with satisfactory results.
similar resources
Extraction and preconcentration of Pb(II) from water and soil samples using modified activated carbon
In this work, a new extractant was prepared by immobilizing ligand 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol, (5-Br-PADAP), on the activated carbon and applied to extraction of Pb(II) prior to determination by flame atomic absorption spectrometry. It was confirmed by FT- IR analysis. The metal ion was retained on the 0.05 g of the sorbent in the pH range 6-8, and then eluted with 5 mL of 0....
full textPreconcentration and Determination of Chromium (III) from Sea Water Samples Using Ion Imprinted Activated Carbon
A simple ion imprinted amino-functionalized sorbent was synthesized by coupling activated carbon with iminodiacetic acid, a functional compound for metal chelating, through cyanoric chloride spacer. The resulting sorbent has been characterized using Fourier transform infrared spectroscopy (FT-IR), elemental analysis, thermogravimetric analysis (TGA) and evaluated for the preconcentration and de...
full textPreconcentration and Determination of Chromium (III) from Sea Water Samples Using Ion Imprinted Activated Carbon
A simple ion imprinted amino-functionalized sorbent was synthesized by coupling activated carbon with iminodiacetic acid, a functional compound for metal chelating, through cyanoric chloride spacer. The resulting sorbent has been characterized using Fourier transform infrared spectroscopy (FT-IR), elemental analysis, thermogravimetric analysis (TGA) and evaluated for the preconcentration and de...
full textpreconcentration and determination of chromium (iii) from sea water samples using ion imprinted activated carbon
a simple ion imprinted amino-functionalized sorbent was synthesized by coupling activated carbon with iminodiacetic acid, a functional compound for metal chelating, through cyanoric chloride spacer. the resulting sorbent has been characterized using fourier transform infrared spectroscopy (ft-ir), elemental analysis, thermogravimetric analysis (tga) and evaluated for the preconcentration and de...
full textapplication and construction of carbon paste modified electrodes developed for determination of metal ions in some real samples
ساخت الکترودهاِی اصلاح شده ِیکِی از چالشهاِی همِیشگِی در دانش شیمِی بوِیژه شیمِی تجزیه مِی باشد ،که با در نظر گرفتن سادگِی ساخت، کاربردی بودن و ارزان بودن روش مِی توان به باارزش بودن چنِین سنسورهاِی پِی برد.آنچه که در ادامه آورده شده به ساخت و کاربرد الکترودهاِی اصلاح شده با استفاده از نانو ذرات در اندازه گِیرِی ولتامترِی آهن وکادمِیم اشاره دارد. کار اول اختصاص دارد به ساخت الکترود خمِیر کربن اصلاح شده با لِیگاند داِ...
15 صفحه اولChemically-Modified Activated Carbon with L-Arginine for Selective Solid Phase Extraction and Preconcentration of Metal Ions
In this study, a new sorbent of chemically-modified activated carbon with L-arginine (AC-Arg) has been produced as solid-phase extraction, to trace Zn(II) and Cd(II) ions in real samples, including soil and water samples, by Flame Atomic Absorption Spectrometry (FAAS). Once the surface coverage value is determined, the surface modification has been investigated and assessed, while having em...
full textMy Resources
Save resource for easier access later
Journal title:
iranian chemical communicationPublisher: payame noor university (pnu)
ISSN 2423-4958
volume 3
issue Issue 1 (pp. 1-84) 2014
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023