ADSORPTIVE STRIPPING VOLTAMMETRIC DETERMINATION OF ULTRA TRACE COBALT WITH ALIZARIN RED S MODIFIED CARBON PASTE ELECTRODE.
Journal Title: International Journal of Advanced Research (IJAR) - Year 2018, Vol 6, Issue 6
Abstract
A very sensitive and selective square wave cathodic adsorptive stripping (SWCAS) voltammetric method at modified carbon paste electrode (CPE) for determination of Cobalt(II) has been developed and evaluated. Square wave Cathodic Adsorptive Stripping Voltammetric (SWCASV) mechanism is proposed to interpret the amplified sensitivity. The procedure is based on the interfacial preconcentration of Cobalt (II) ion on Alizarin Red S through a surface coordination effect. The effect of various parameters such as medium, pH, accumulation potential, scan rate, accumulation time and ionic strength were tested to optimize the conditions for the determination of Cobalt(II) ion. The adsorbed form is reduced irreversible at optimal conditions viz; 0.15M Phosphate buffer (pH~9.5). Linear concentration range 2?10-12 - 6?10-11 M (0.00012 ? 0.00354 ng/mL (at 60s, can be determined successfully. The interferences of some common foreign species and some metal ions were studied. The high sensitivity and selectivity of this method were demonstrated by determination of cobalt in human hair and water samples.
Authors and Affiliations
Ahmed . A. Gahlan.
Keywords
Related Articles
- EP ID EP341350
- DOI 10.21474/IJAR01/7230
- Views 63
- Downloads 0
MELANOME CHOROIDIEN PRIMITIF : A PROPOS D?UNE OBSERVATION ANATOMO-CLINIQUE.
Choro?dal melanoma (CM) is the most common intraocular malignant neoplasm in adults. The diagnosis is based on histological and immunohistochemical examination.These tumors have a pejorative prognosis and their evolution...
AN ETHNOGRAPHIC DESCRIPTION OF LIFE-STYLES, CULTURE AND NEWLY EMERGED MULTIPLE DIMENSIONS OF INDIAN MIDDLE CLASS IN AN URBAN SETTING OF KOLKATA, WEST BENGAL.
The purpose of this research is to understand the ?new Indian middle class?, as a class of life-styles and cultures of consumption and specific forms of capital under current neoliberal globalizing regime. This ethnograp...
RELIGIOUS CONVERSATION AND TRIBES IN CHHATTISGARH IN INDIA: A CASE STUDY.
The research work is inducted in by the tribal dominant jashpur district of Chhattisgarh. It includes 300 respondents residing in the district and has undergone religious conversion. The researcher has studied their reli...
THE DEVELOPMENT OF ASSESSMENT INSTRUMENT TOWARDS THE STUDENTS? CRITICAL THINKING ABILITY ON THE HIGH SCHOOL PHYSICS LESSON WITH THE CREATIVE PROBLEM SOLVING MODEL.
This research aims to describe the characteristics and implementation as well asto describe the response of the teachers and the students towards the implementation of the assessment instrument on the students? critical...
AMBIDEXTERITY OF IMMORTAL PLANT IN DENTISTRY.
Plant of immortality is the term used by Egyptians to describe aloe vera since it can be vital and effloresce even in truancy of soil. Aloe vera is the primeval medicinal plant ever known and the most applied medicinal p...