Spectrophotometric determination of trace amounts of lead in Benghazi-city coast as its dithizone complex using solvent extraction
Egyptian Science Magazine [The]. 2008; 5 (4): 57-64
in English
| IMEMR
| ID: emr-135335
ABSTRACT
A simple and sensitive extraction-spectrophotometric method for the determination of lead is described. The complex formed between lead and Dithizone is extracted with chloroform at pH 9.5, and shows maximum absorbance at 520nm with a molar absorptivity of 1.8 x 10[5] L mol[-1] cm[1]. It obeys Beer's law over the range 0.16-1ppm. Various experimental parameters were studied for establishing the optimum conditions for the determination of lead. The method had been applied to the determination of lead in marine environmental samples. A step-by-step approach has been taken, through sampling, laboratory cleanliness, pre-treatment, extraction, instrumental measurement and, finally, the now much emphasised areas of method validation, analytical quality control and proper reporting of results:
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Spectrophotometry
/
Urban Population
/
Cities
/
Dithizone
Language:
English
Journal:
Egypt. Sci. Mag.
Year:
2008
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