Problem of solvent during liquid liquid extraction
Posted: Tue Jul 16, 2013 3:41 pm
Hi everybody,
In order to quantify different pesticides by GC/MS, I'm currently using a liquid-liquid extraction step with hexane for the transfer of pesticides from an aqueous solution (HBSS). This method works pretty well regarding the extraction of atrazine, simazine, propazine and its metabolite DEA with their respective logP value 2,75 - 2,2 - 2,9 - 1,51. But regarding the other metabolites DIA and DACT with logP value 1,01 and -0,1 respectively, the solvent is not appropriate.
Does anyone have an idea of solvent that could be used for the extraction of these 2 weakly lipophilic compounds ?
Thank you very much for your help!
In order to quantify different pesticides by GC/MS, I'm currently using a liquid-liquid extraction step with hexane for the transfer of pesticides from an aqueous solution (HBSS). This method works pretty well regarding the extraction of atrazine, simazine, propazine and its metabolite DEA with their respective logP value 2,75 - 2,2 - 2,9 - 1,51. But regarding the other metabolites DIA and DACT with logP value 1,01 and -0,1 respectively, the solvent is not appropriate.
Does anyone have an idea of solvent that could be used for the extraction of these 2 weakly lipophilic compounds ?
Thank you very much for your help!