METHOD FOR DETERMINING trace arsenic and antimony in herbal RAW

摘要

A method for determining a trace of arsenic and antimony in the medicinal plant material, characterized by transfer materials into liquid form by reduction of antimony and arsenic from a liquid form to the trivalent state with a mixture containing 40% potassium iodide solution, 10% strength ascorbic acid solution to atomic hydrides hydrogen obtained by reacting a 4 M solution of hydrochloric acid with metallic zinc, hydrides formed was distilled off through the absorption cell containing a solution of iodine photogenerated accompanied mind sheniem amount of titrant latching amperometrically to change the current, followed by blowing air oxygen absorption cell for 1-2 minutes, irradiation LED lamp and iodine photogeneration to its initial value number in the presence of a mixture of sensitizers auramine: fluorescein sodium eozinata in the ratio 1: 1 1, quantifying trace of arsenic and antimony to change the current strength and the time of its generation.