Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 20 | Page No.: 3123-3126
DOI: 10.3923/jas.2007.3123.3126
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Determination of Trace Mercury by Cloud Point Extraction Preconcentration Coupled with Spectrophotometry

Mahmoud Reza Sohrabi, Elham Farokhi, Atena Adnani and Mona Ziaian

Abstract:
A new micell-mediated phase separation method for preconcentration of ultra-trace quantities of mercury as a prior step to its determination spectrophotometry has been developed. The method is based on the Cloud Point Extraction (CPE) of mercury with Triton X-100 in the absence of chelating agent. Mercury react with sodium diethyldithiocarbamate (DDTC) in a surfactant solution yielding a hydrophobic complex, which then is entrapped in surfactant micelles. Separation of the two phases was accomplished by centrifugation for 10 min at 4000 rpm. Under the optimum conditions i.e., pH 9.0, cloud point temperature 45°C, [DDTC] = 1.6x10-5 mol L-1, [Triton X-114] = 0.032%. Analytical graphs were rectilinear in the concentration range of 4-240 µg L-1 and relative standard deviation for five replicate determinations of Mercury at 8 (μg L-1) concentration level, were 1.9%, respectively (n = 5, c = 8 µg L-1).
PDF Fulltext XML References Citation Report Citation
How to cite this article:

Mahmoud Reza Sohrabi, Elham Farokhi, Atena Adnani and Mona Ziaian, 2007. Determination of Trace Mercury by Cloud Point Extraction Preconcentration Coupled with Spectrophotometry. Journal of Applied Sciences, 7: 3123-3126.

DOI: 10.3923/jas.2007.3123.3126

URL: https://scialert.net/abstract/?doi=jas.2007.3123.3126

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

Curve Bottom