info:eu-repo/semantics/article
Fast and easily obtained information about mobilizable metals from sediment samples. Extraction assisted by benzothiophene-based ionic liquids
Fecha
2021-05Registro en:
Schiel, María Ayelén; Domini, Claudia Elizabeth; Silbestri, Gustavo Fabián; Fast and easily obtained information about mobilizable metals from sediment samples. Extraction assisted by benzothiophene-based ionic liquids; Pergamon-Elsevier Science Ltd; Chemosphere; 270; 128663; 5-2021; 1-9
0045-6535
CONICET Digital
CONICET
Autor
Schiel, María Ayelén
Domini, Claudia Elizabeth
Silbestri, Gustavo Fabián
Resumen
A fast and easy method for trace metal extraction on sediments was developed in our laboratories. Three new stable S-metylbenzothiophenium salts were employed along with microwaves to modify the BCR protocol to obtain the concentration of metals of the first two fractions in only one step. The optimum conditions were obtained with 0.125 g of sediment irradiated at 250 W for 30 s at 120 °C, in 5 ml of an aqueous mixture of 10 mM of 1,2-dimethylbenzothiophenium tetrafluoroborate and 0.5 M of hydroxylamine chlorhydrate at pH 2. The method validation was carried out employing BCR 701. The extracted metals were determined by ICP OES. A student's paired t-test was applied with the reference method, giving satisfactory results.