EXTRACTION OF HEAVY METAL IONS FROM AQUEOUS SOLUTIONS BY FRAME SORBENTS BASED ON BENZENE-1,3,5-TRICARBOXYLATE (MBTC) AND BENZENE-1,4-DICARBOXYLATES (MBDC) OF VARIOUS METALS СтатьяMushtakov A.G., Markova E.B., Kurochkin A.V., Anistratov N.A., Zaitsev Y.M., Guseva E.A., Skvortsova L.G., Cherednichenko A.G., Glinushkin A.P.Russian Agricultural Sciences. Том 50. 2024. С. 746-753