Document Type : Research Paper
Khorezm Ma’mun Academy, Khiva, 220900, Uzbekistan
Faculty of Chemistry, National University of Uzbekistan, Tashkent, 100034, Uzbekistan
Department of Chemical and Biological Sciences, Satbayev University, Almaty, Kazakhstan
Department of Metallurgical Sciences, Satbayev University, Almaty, Kazakhstan
In this investigation, Sulfarsazen (SFN) was immobilized on polyethene polyamine-modified polyacrylonitrile (PPA) and was introduced as a new matrix and efficient analytical reagent for Hg(II) determination. This reagent is a new, non-volatile, stable, and non-poisonous, which shows high selectivity and gives a super recovery along with more accurate and fast response, as an analytical agent in the Hg(II) determination. The sensitivity for Hg(II) determination with the new selective immobilized reagent was maximal at 520 nm. Also, the optimal pH for Hg(II) determination by new matrix was 9.8, at which the analytical signal was maximal. It was found that the linear range was 2-42 mg/L, the detection limit was 0.4 mg/L, and the adsorption percentage was about 98%. The Sulfarsazen-immobilized polymeric matrix was selective in the determination of Hg(II), even in the presence of Ca2+, Sr2+, Ba2+, Mg2+, Na+, Cl- and I- ions in the solutions. The Hg(II) amounts in the wastewater samples were determined by the SFN/PPA matrix, with adsorption efficiencies in the range 98-99% and high accuracy. These properties cause this analytical reagent be very efficient in Hg(II) determination, and the traditional ones can be replaced with this new reagent, for the Hg(II) determination..