Abstract
Our previously reported procedure for the extraction of semivolatile and nonvolatile organic compounds from aqueous samples by thermospray liquid/liquid extraction was extended to the extraction of charged organic compounds from water. By thermally disrupting or extricating the solvation shell of hydrated ions, the thermospray process facilitates the extraction of these analytes from the aqueous matrix. The effects of probe temperature, probe flow rate, and sample pH on the extraction efficiency of model compounds such as phenylalanine, benzoate ion, p-toluenesulfonate ion, and naphthalenetrisulfonic acid trisodium salt were investigated. Under optimized conditions, the percent recoveries for these compounds were 95, 97, 91, and 13%, respectively.
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