caa a22 4500 465731716 CHVBK 20180323111743.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF02060456 doi (NATIONALLICENCE)springer-10.1007/BF02060456 Preconcentration and separation of silver from neutron poisons and rare earths using diphenyl-2-pyridylmethane as an extractant [Elektronische Daten] [S. Hasany, A. Ali] The extraction of silver from aqueous thiocyanate-perchlorate solutions using diphenyl-2-pyridylmethane (DPPM) in benzene has been investigated. The variables such as concentrations of perchloric acid, thiocyanate and DPPM influencing the extraction have been optimized. Maximum extraction has been achieved from 0.01 M perchloric acid solution containing 0.01 M potassium thiocyanate in 0.075 M DPPM in benzene. The extraction was found to be independent of silver concentration in the range from 10−4-10−6 M. The influence of several anions on the extraction was examined; only thiosulphate interfered seriously and reduced the extraction below 1%. Thus 0.1M potassium thiosulphate was found to back-extract silver quantitatively in one step. Under selected optimal conditions, very small extraction (<1%) was observed for trivalent Gd, Dy, Ho, Tm, Yb, Lu; Cs(I) and Cd(II) and separation factors for these elements were better than 103. Only Sn(IV) exhibited quantitative extraction (>99%). This extraction procedure can be used for the preconcentration of silver and tin or their separation from rare earths mentioned above. Akadémiai Kiadó, 1990 Hasany S. Nuclear Chemistry Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, (Pakistan) aut Ali A. Nuclear Chemistry Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, (Pakistan) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 139/1(1990-03-01), 99-107 0236-5731 139:1<99 1990 139 10967 https://doi.org/10.1007/BF02060456 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02060456 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hasany S. Nuclear Chemistry Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, (Pakistan) aut NATIONALLICENCE 700 1- Ali A. Nuclear Chemistry Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, (Pakistan) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 139/1(1990-03-01), 99-107 0236-5731 139:1<99 1990 139 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer