Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userPreparation and study of new ion selective electrode for determination of cadmuim based 1,3-dipheny l-5- (P-nitrophenyl) formazan as ionophore
تحضير ودراسة خصائص إلكترود جديد منتقٍ لأيون الكادميوم (ǁ) يعتمد على معقد الكادميوم مع مركب 1 , 3- ثنائي فنيل – 5 –(- p نترو فنيل) فورمازان بوصفه مادة فعالة كهركيميائيا
1546
0 166
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
تم في هذا البحث تحضير إلكترود غشاء بولي فنيل كلوريد (PVC ) جديد منتقٍ لأيون الكادميوم+ Cd2, بالاعتماد على معقد الكادميوم مع 1 – 3- ثنائي فنيل – 5 –(- p نترو فنيل) فورمازان, بوصفه مادة فعالة كهركيميائيا. وقد أبدى هذا الغشاء استجابة نيرنيستية تجاه أيون الكادميومCd2+ على مجال خطيّ واسع ( 1.0 × 10-6 - 1.0 × 10-1) مول / لتر وميل27.74 mv/decade , بحدّ كشف بحدود 7×10-7 M , وزمن استجابة بحدود 15 Sec , وزمن حياة طويل يتجاوز الأربعة أشهر, كذلك مجال pH واسع بين 4 – 9 . وتبين بحساب معاملات الانتقائية باستخدام طريقة الكمون الموافق Matched Potential Method(MPM) أنّ إلكترود غشاء PVC المقترح يتمتع بانتقائية عالية لأيونات Cd+2 بوجود العديد من الأيّونات القلوية والقلوية الترابية , وبعض أيونات المعادن الثقيلة الأخرى, واستخدم الإلكترود المقترح بنجاح لتحديد تركيز الكادميوم +Cd2 في عيّنات قياسية وأخرى واقعية من البيئة المائية, وبعد إجراء المعالجة الإحصائية للنتائج تبين صحة هذه الطريقة ودقّتها.
A new polyvinylchloride membrane sensitive to Cd+2 ions basede on 1,3-diphenyl-5-P-nitrophenylformazan as ionophore has been prepared. This electrode shows a Nernestian response for cadmuim ions over a wide range ( 1.0 ×10-6 to 1.0 ×10-1 M ) with the slope of 27.74 mv . decade-1 . the detiction limite is 7 × 10-7 M . It has a fast response time of 15 s and can be used for at least 4 mounth without any divergence in potential . the electrode can be used in the pH range from 4.0 to 9.0 . the proposed electrode shows avery good discriminating ability towards Cd+2 ion in presence of some alkali , alkaline earth , transition and heavy metal ions. It was successfully applied for the direct determination of Cd+2 in standard and real sample solutions
References used
GHAEDI, M; MONTAZEROZOHORI ,M; .ANDIKAEY, Z; SHOKROLLAHI. A; KHODADOUST,S; BEHFA, M.R;SHARIFI, S. Fabrication of Pb+2 ion selective electrode based on 1-(3-(2-Hydroxynaphthalen-1-yl)Methyleneaamino)-2,2-Dimethyl propylimino) Methyl) Nabhthalen-2-ol as new neutral. Electrochemical Science. Int.J. Electrochem. Sci, 6, 2011,4129-4140
GUPTA ,V.K; JAIN A,K; KUMAR, P. PVC-based membranes of N,N'-dibenzyl- 1,4,10,14-tetraoxa-716- diazacyclooctadecane as Pb+2 – selective sensor. Sence.Actuators, B210, 2006, 259-265
KAZIMI, S .Y; SIPUR M, S; SHARGHI, H. lead-Selective Poly(vinyl chloride) electrodes based on some Synthesizedbenzo-substituted macrosyclic diamides. Journal of Hazardous Materials 172, 2009,68-73
FTHENAKIS, V.M; Life cycle impact analysis of cadmium in CdTe PV production Renew. Sustain. Energy Rev, 8 ,2004, 303–334
Bertin, G; AVERBECK, D. Cadmium: cellular effects, modifications of biomolecules, modulation of DNA repair and genotoxic consequences (a review). Biochimie,88 ,2006, 1549–1559
rate research
Read More
In this study, a new poly(vinyl chloride) (PVC) membrane electrode for La3+ ion based on paraldyhed phenyl hedrazon as an electroactive material was prepared.This electrode revealed good selectivity for La3+ over a wide variety of other metal ions. E
ffects of experimental parameters such as membrane composition, nature and the amount of plasticizer, the amount of additive on the potential response of La3+ electrode were investigated. The electrode exhibited a Nernstian slope of 20.0±1.0mV per decade of La3+ over a concentration range of 1×10-7 to 1×10-1M of La3+ in the pH range 3.8–8.0. The response time was about 30 s and the detection limit was 7×10-8 M. The electrode couldbe used for at least one month without a considerable divergence in potential. The proposed electrode was used for the determination of lanthanum in a standard solations andwas successfully applied as an indicator electrode for potentiometric titration of La3+ with EDTA.
Three organic phosphorous compounds containing bridge
with (PhO) phenoxide and (Ph) phenyl group, to be used as materials derived element
cadmium ion according to the (liquid - liquid) extraction method that apply to widely used
in the restoration
of metal ions operations starting from aqueous solutions in mining
operations to environmental applications, and identified some of the physical properties
(melting point, spectra UV, IR).
Photometric method was adopted to determine the concentrations, as it used the
solution of 2-Nitroso, 1- Naphthol to determine the concentrations of cadmium ion in the
aqueous phase after extraction and its concentrations in the organic phase based on the
difference between the concentrations of primitive prepared aqueous solution and the final
concentrations in the aqueous phase.
Distribution Ratio DCd was studied of the ion cadmium between the aqueous medium
of the acid solution of Sulfuric and central Organic Dilutions containing different
concentrations of the previous prepared organophosphorus compounds also was studied the
Distribution Ratio DCd of ion cadmium depending of changing of pH-values in aqueous
medium and central organic Includes fixed concentration from the previous prepared
organophosphorus compounds and registered the distribution of information focus
numerically and graphically.
A new carbon paste electrode (CPE) for Co2+ ion modified with
complex of Cobalt(II) with 1-(2-pyridylazo)-2-naphthol (PAN) as
electroactive 84aterial was prepared. The best performances were
obtained by carbon paste electrode with the composition Graphit
powder (47%), DOPH as plasticizer (47%) and Co-PAN as
electroactive material (6%)
Five derivatives of Formazn (FM1–FM5) were prepared through reaction between
benzaldehydphenylhydrazone with five diazonium salts by a reaction ratio of 1:1 in
alkaline medium. The hydrazone was prepared through the reaction between
phenylhydrazin
e and benzaldehydeby a reaction ratio of 1:1 in a slight acidic medium.
Crystals of formazans resulting from recrystalization were formed by using different
solvents and show variation of solubility among these formazans according to the kind of
the solvent and the kind of diazonium salt used. Their purity was studied by using thin
layer chromatography. The melting point of the prepared hydrazone and the resulting
Formazan complexes were complexes with lead (II), copper(II) and cadmium were
successfully prepared and studied by using UV and IR spectroscopy. These complexes
were used as ionophors and applied as electrically active materials in the preparation of
ion-selective membranes for the mentioned metal ions.
Ion selective electrode of Cu٢+ for determining of copper (II) in acid and
Ammonia Solutions is presented. Optimal conditions and main characteristics
of such electrode have been determined. The effect of anionic surfactants on the
electrode has b
een investigated. The use of protective film such as cellophane,
cellulose acetate, Lavsan, or nitro cellulose could be possible in order to avoid
the difficulties related to the work in surfactant presented in the solutions.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
