Тип публикации: статья из журнала
Год издания: 2004
Ключевые слова: Anion exchanger, Gold, Separation, Silver, Sorption, cobalt, copper ion, gold complex, iron, resin, thiocyanate, thiourea, anion exchange, aqueous solution, article, complex formation, diffuse reflectance spectroscopy, separation technique, solid state
Аннотация: The present paper is focused on simultaneous sorption concentration of gold (111) and silver (1) from thiocyanate solutions using high-selective anion exchanger AN-25 and subsequent separation of these ions at various concentrations of thiocarbamide (eluent). As a result, silver (1) ions are completely eluted from AN-25 and gold (1Показать полностью11) ions remain in the resin phase and can be determined directly in the solid phase by diffuse reflection spectroscopy. It is proposed to use the sorption-spectroscopic method for Au(III) determination in aqueous solutions. The calibration curve is linear in the concentration range of 1-19 mg/L (sample volume is 10.0 mL) and the detection limit is 0.05 mug/mL. The presence of Cu(II), Co(II), Fe(II) do not hinder this determination. Au(III) was determined in industrial solutions.
Журнал: BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Выпуск журнала: Vol. 25, Is. 7
Номера страниц: 1019-1024
ISSN журнала: 02532964
Место издания: SEOUL
Издатель: KOREAN CHEMICAL SOC