“A STUDYING SYNTHESIS OF A CHELATE-FORMING SORBENT BASED ON UREA-FORMALDEHYDE AND DIPHENYLCARBAZONE : STUDYING SYNTHESIS OF A CHELATE-FORMING SORBENT BASED ON UREA-FORMALDEHYDE AND DIPHENYLCARBAZONE ”. 2024. Indian Journal of Chemistry (IJC) 63 (6): 579-85. https://doi.org/10.56042/ijc.v63i6.9006.