کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1403742 | 984843 | 2007 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Modification of poly(styrene-co-divinylbenzene) membrane by grafting of salicylic acid via a ketone bridge Modification of poly(styrene-co-divinylbenzene) membrane by grafting of salicylic acid via a ketone bridge](/preview/png/1403742.png)
Chelating solid phase extraction is a method particularly adapted to the recovery of metallic ions in polluted waters. The principle consists in the partitioning of the analyte between the solution and a solid sorbent grafted by a ligand. Aromatic organic crosslinked copolymers, which are commercially available, permit to consider numerous ways of linking the ligand to the sorbent. In this way, the grafting of salicylic acid (SA) via a ketone bridge on Amberlite® XAD-4 resin has been previously achieved with success. Then the same grafting on Empore™ SDB-XC membrane was also considered. The yield obtained is 33%. The determination of complexing capacities highlights the fact that about 20% of the grafted complexing sites could efficiently retain metallic ions. For the first time, a ligand has been covalently linked to Empore™ SDB-XC membrane.
Journal: European Polymer Journal - Volume 43, Issue 2, February 2007, Pages 416–424