Uses of 5-Methylresorcin-bonded polyurethan foam as a new solid phase extractor for the selective separation of mercury ions from natural water samples |
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Authors: | N Burham |
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Institution: | (1) Chemistry Department, Faculty of Science, Fayoum University, Fayoum City, Egypt |
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Abstract: | In this work, 5-Methylresorcin (MR) bonded to untreated polyurethane foam (PUF) was successfully employed as a sorbent (MR-PUF)
for the selective separation and determination of mercury in natural water samples. Mercury can be quantitatively recovered
in the pH range of 5-7. The system presented a minicolumn packed with the new sorbent, where the sample solution was passed
through it for a period of time and an eluent solution stripped out the retained mercury, which was further determined with
dithizone. The new matrix was characterized by using different tools (IR spectra, stability and density). The kinetics of
mercury uptake by the new matrix was found to be fast, reaching equilibrium in 20 minutes. A preconcentration factor of 350
was achieved. The proposed preconcentration procedure was applied successfully to the selective separation and determination
of trace mercury in natural water samples.
![MediaObjects/11532_2008_65_Fig1_HTML.jpg](/content/8308450p74275324/MediaObjects/11532_2008_65_Fig1_HTML.jpg) |
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Keywords: | 5-Methylresorcin Polyurethane foam Column study Mercury preconcentration Water analysis |
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