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| Titel: |
Cloud-point extraction of trace copper in lipophilic complex form |
| Auteur: |
Wang, Chuhua Martin, Dean F. Martin, Barbara B. |
| Verschenen in: |
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering |
| Paginering: | Jaargang 31 (1996) nr. 5 pagina's 1101-1109 |
| Jaar: |
1996-05 |
| Inhoud: |
A less-common extraction procedure, cloud-point extraction, was used with a lipophilic chelating agent (LEX® 54) to extract copper ion from aqueous solution. Surfactant solutions [0.2-2.2 %(w/w) of nonylphenoxypoly(ethylenoxy)ethanol] with a cloud-point of 48-52°C, was used in conjunction with a lipophilic chelating agent, dodecyl benzoylacetone, RC6H4CO-CH2COCH3, to form a copper complex that would be extracted into the micellar phase. Extraction was optimal in a pH range of 5-11 with 95.5-98.6% of the copper extracted. The partition coefficient increased with increasing copper concentration and was in excess of 1000 when the initial copper concentration was 80 ppm. Unlike the cloud-point temperature and the extraction rate, extraction efficiency was only slightly related to surfactant concentration. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 21 gevonden artikelen
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