Use of Barium Chloranilate Solid-Phase Reactor for the Determination of Sulfate in Natural Water Samples Exploiting Long Pathlength Spectrophotometry and Multicommutation

2011 ◽  
Vol 44 (1-3) ◽  
pp. 298-309 ◽  
Author(s):  
Viviane Gomes Bonifácio ◽  
Fernanda Helena Salami ◽  
Luiz Humberto Marcolino-Junior ◽  
Orlando Fatibello-Filho
Keyword(s):  
Natural Water ◽  
Water Samples ◽  
Solid Phase ◽  
Natural Water Samples ◽  
Solid Phase Reactor ◽  
Long Pathlength Spectrophotometry

scholarly journals Uses of 5-Methylresorcin-bonded polyurethan foam as a new solid phase extractor for the selective separation of mercury ions from natural water samples

2008 ◽  
Vol 6 (4) ◽  
pp. 641-650 ◽  
Author(s):  
N. Burham
Keyword(s):  
Natural Water ◽  
Water Samples ◽  
Solid Phase ◽  
Selective Separation ◽  
Natural Water Samples ◽  
Mercury Uptake ◽  
Preconcentration Factor ◽  
Ph Range ◽  
Kinetics Of

AbstractIn 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.

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