PRECONCENTRATION OF MERCURY IN HUMAN HAIR BY MODIFIED SILICA AEROGEL NANOPARTICLES
Journal Title: Academic Research International - Year 2012, Vol 2, Issue 2
Abstract
Pollution from heavy metals has increased in recent decades and has become an important concern for environmental agencies. Mercury is among the trace elements that have the greatest impact and carry the highest risk to human health. In the present work, a new adsorbent, silica aerogel modified with 4-amino-5-methyl-1, 2, 4-triazole-3(4H)-thion (AMTT) was applied to preconcentration of mercury in scalp hair samples prior to its determination. The adsorbent was characterized by Fourier Transform Infrared Spectra (FTIR), and Thermal Gravimetry (TG) and Scanning Electron Microscope (SEM). The optimum pH for the adsorption of mercury ion ranged from 5 to 6 and the minimum shaking contact time necessary for reaching the equilibrium was about 6h. The enrichment factor is 150 was obtained. The method successfully applied to the determination of trace Hg (II) in spiked hair samples, with recoveries ranging from 90% to 94%.
Authors and Affiliations
Fariba Tadayon, Shiva Motahar
Keywords
Related Articles
- EP ID EP92831
- DOI -
- Views 149
- Downloads 0
CONCERNS ON ISSUES OF EXAMINATION MALPRACTICES A CASE STUDY OF ACCRA POLYTECHNIC
Examination malpractice contravenes the rules and regulations set by examination bodies. This research looks at the forms, the factors and key players in examination malpractices, as well as the consequences and measur...
THE EFFECTS OF USING HANDWRITING WITHOUT TEARS® TO TEACH THIRTY-ONE INTEGRATED PRESCHOOLERS OF VARYING ACADEMIC ABILITY TO WRITE THEIR NAMES
The purpose of this study was to evaluate and measure the effectiveness of the prewriting and Handwriting Without Tears®. Thirty-one students were selected from a hybrid Early Childhood Education Assistance Program, EC...
A Critical Study of Decline of Muslim Culture & Tradition through Characters with Different Perspectives in Ahmad Ali’s Twilight in Delhi
Twilight in Delhi is supposed to be a story of a Muslim family lived in Delhi at the beginning of the 20th century. The novel talks about the journey of the family’s fate value and cultural heritage shown through differe...
The Introduction Types of Vocal Sound in Choir in Realtime Using Hankel Transformation and Macdonald Function
A group sang in the choir consists of several parts, among others soprano voice, alto, tenor and bass. Prior to the formation of choral group first performed the determination of the sound of each singer by coach or expe...
AN EXPLORATORY STUDY OF PROJECTION OF POSITIVE IMAGE OF WOMAN THROUGH MEDIA
Media is a promising industry in Pakistan and is an effective tool to formulate not only public opinion but also can polish already existing social values. Women projection in Pakistani media is not entirely positive...