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Adsorption-photometric determination of iron using silica with nitroso-R salt and nitroso-N salt functional groups
Adsorbents based on silica sequentially modified by polyhexamethylene guanidine and nitroso-R salt or nitroso-N salt are proposed for the preconcentration and adsorption-photometric determination of iron. It is shown ...
Using Silica Modified by Tiron for Metal Preconcentration and Determination in Natural Waters by Inductively Coupled Plasma Atomic Emission Spectrometry
A new adsorbent is synthesized on the basis of silica consecutively modified by polyhexamethylene guanidine and 4,5-dihydroxy-1,3-benzenedisulfonic acid (Tiron) for the group preconcentration of Fe(III), Al(III), Cu(II), ...
ПРИМЕНЕНИЕ СИЛИКАГЕЛЯ, ХИМИЧЕСКИ МОДИФИЦИРОВАННОГО СЕРОСОДЕРЖАЩИМИ ГРУППАМИ, ДЛЯ РАЗДЕЛЕНИЯ И ОПРЕДЕЛЕНИЯ ПЛАТИНЫ И РЕНИЯ В КАТАЛИЗАТОРАХ НА ОСНОВЕ ОКСИДА АЛЮМИНИЯ
Adsorbents based on silica chemically modified by sulfur-containing groups (dithiocarbamate, thiodiazolethiol, mercaptophenyl, and aminobenzothiazole) quantitatively extract (recovery ≥99%) platinum( IV) from solutions ...
Use of Silica with Immobilized 2-Nitrozo-1-Naphthol-4-Sulfonic Acid for the Sorption–Photometric Determination of Palladium
Silica modified with 2-nitroso-1-naphthol-4-sulfonic acid (NNS), quantitatively extracting palladium( II) from solutions in the pH range 1–8, is proposed for the preconcentration and photometric determination of palladium(II) ...