Abstract
There was synthesized a new sorbent on the basis of maleic anhydride’s copolymer with styrene, modified by dithiocarbamide. There was examined influence of pH on concentrating of lead(II) with chelating sorbent. There was plotted isotherm of lead(II) sorption with synthesized sorbent and investigated optimal conditions of concentration. There was established that with increasing concentration of lead in solution increases quantity of sorptive metal. There was examined influence of ionic strength on sorption. The increasing of ionic strength to 0, 4 mole/l marginally influence on sorption. There was examined influence of different inorganic acids (HClO4, H2SO4, HNO3, HCl) with identical concentration on desorption of lead(II) from sorbent. Maximal desorption of lead(II) is occurred in perchlorate acid. The rate of extraction of lead(II) at optimal conditions was not exceeds 95 %. There was developed procedure of sorption photometric determination of lead(II) in standard specimen ST-IA (519-84 P).
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