A Novel Green Nano Determination of Aluminium in Food, Biological and Water Samples Using a Cloud Point Extraction Combined with Spectrophotometry

Abstract

Oxygen, silicon and aluminium being the first, second and third most abundant element in the Earth's crust. Aluminium is found in air, water, soil, plant and animal tissues in different forms. It is released to the environment due to anthropogenic activities such as mining, industrial uses and production of aluminium metal and other aluminium compounds. For several years, it was not considered as a harmful metal for humans but animal experiments in 1965 suggested a possible connection between aluminium and Alzheimer's disease [1,3]. Oral intake of foodstuffs is the most important source of aluminium. According to the data of the American scientists, daily consumption of 0.1mg of aluminium with drinking water increases the risk of dementia 2.26 times and considerably reduces intellectual abilities [2]. Oral aluminium bioavailability from the diet has been estimated to be 0.1 to 0.3%, based on daily aluminium intake and urinary elimination. Results of a few studies with a controlled diet and

Extraction-Spectrophotometric Determination of Nickel With 4-(2-Pyridylazo) Resorcinol in the Neonol Af 9-10 – Water System

“…Проблема токсичности и пожароопасности органических растворителей, используемых в экстракционно-фотометрическом методе анализа, решается применением ионных жидкостей [1,2], глубоко-эвтектических растворителей [3,4] или поверхностно-активных веществ [5][6][7]. Наибольшее распространение при этом получили неионные ПАВ -оксиэтилированные октилфенолы [8,9], нонилфенолы [10,11] и моноалкилполиэтиленгликоли [12]. Однако использование ионных ПАВ в качестве экстрагента [13,14] или добавок микроколичеств ионных ПАВ к экстрактам на основе неионных ПАВ [15,16] Для определения состава комплексного соединения никеля с ПАР, а также константы нестойкости использовались стандартные методы -насыщения, изомолярных серий и разбавления [22,23].…”