PROCEDURE FOR PRODUCTION OF MATERIAL ON BASE OF CELLULOSE AND ITS APPLICATION FOR DETERMINATION OF HEAVY METALS

摘要

FIELD: processing procedures. ^ SUBSTANCE: invention can be used in analytic chemistry for sorption concentration and successive determination of heavy metals in water solutions. The procedure for production of sorption material consists in impregnation of surface of a cellulose filter with an analytic reagent wherein thio-semi-carbazone of picoline aldehyde is used as such. Impregnation is carried out with conditioning cellulose material in solution of the reagent in ethanol containing 2.5 % of cetyl alcohol with successive extraction and drying in air. Produced cellulose material is applied for sorption-roentgen-fluorescent analytic determination of heavy metals in water solutions. Metals are extracted with cellulose material for roentgen-fluorescent determination at pH 7.5-10.5, preferably, at pH 10.0. ^ EFFECT: simple and safe procedure for production of sorption cellulose material used for efficient concentration of heavy metals with successive determination of each of them separately and in whole. ^ 4 cl, 2 tbl, 2 ex