Test determination of aluminum, beryllium, and cationic surfactants using phenolcarboxylic acids of the triphenylmethane series immobilized on cloths from synthetic and natural fibers

Abstract

We consider the use of cloth matrices from viscose and cotton fibers bearing phenolcarboxylic acids of the triphenylmethane series immobilized by adsorption in chemical test methods of analysis. Chrome Azurol S, Sulfochrome, and Eriochrome Cyanine R were used for immobilization. It was found that the reagents are weakly retained on cellulose matrices. The degree of retention varied from 10 to 60%. It was observed that the reagent complexes of metal ions exhibited enhanced adsorbability on the matrices. Cloths with immobilized Chrome Azurol S were used in the test determination of 0.0005–0.5 mg/L beryllium and 0.0005–1.0 mg/L aluminum. When the reaction products were preconcentrated on the cloth from 100 mL of a test solution, the detection limit was 0.0001 mg/L. Procedures were developed for determining 0.1–100 mg/L aluminum and 0.02–0.6 mg/L beryllium in solutions using cloth test strips encapsulated into a polymeric film. It was demonstrated that Sulfochrome and Eriochrome Cyanine R immobilized on cloths can be used to determine 0.01–1 and 1–1000 mg/L cationic surfactants.